/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:44:29,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:44:29,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:44:29,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 11:44:30,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-21 11:44:30,086 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:44:30,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:44:30,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:44:30,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:44:30,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:44:30,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:44:30,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:44:30,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:44:30,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:44:30,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:44:30,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:44:30,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:44:30,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:30,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:44:30,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:44:30,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:44:30,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:44:30,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:44:30,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:44:30,460 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:44:30,461 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:44:30,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2021-08-21 11:44:30,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178ba120e/feee71af6b9d4d51a20b9276c1f66cb8/FLAG643176231 [2021-08-21 11:44:31,192 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:44:31,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2021-08-21 11:44:31,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178ba120e/feee71af6b9d4d51a20b9276c1f66cb8/FLAG643176231 [2021-08-21 11:44:31,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178ba120e/feee71af6b9d4d51a20b9276c1f66cb8 [2021-08-21 11:44:31,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:44:31,419 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:44:31,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:31,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:44:31,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:44:31,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:31" (1/1) ... [2021-08-21 11:44:31,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d251067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:31, skipping insertion in model container [2021-08-21 11:44:31,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:31" (1/1) ... [2021-08-21 11:44:31,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:44:31,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:44:32,045 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2021-08-21 11:44:32,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:32,086 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:44:32,121 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2021-08-21 11:44:32,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:32,248 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:44:32,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32 WrapperNode [2021-08-21 11:44:32,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:32,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:32,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:44:32,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:44:32,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:32,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:44:32,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:44:32,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:44:32,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:44:32,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:44:32,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:44:32,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:44:32,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:32,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:44:32,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 11:44:32,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 11:44:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:44:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-21 11:44:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-21 11:44:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-21 11:44:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:44:32,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:44:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-08-21 11:44:32,460 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-08-21 11:44:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:44:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:44:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:44:32,462 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:44:33,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:44:33,095 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-21 11:44:33,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:33 BoogieIcfgContainer [2021-08-21 11:44:33,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:44:33,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:44:33,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:44:33,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:44:33,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:44:31" (1/3) ... [2021-08-21 11:44:33,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:33, skipping insertion in model container [2021-08-21 11:44:33,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (2/3) ... [2021-08-21 11:44:33,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdc724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:33, skipping insertion in model container [2021-08-21 11:44:33,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:33" (3/3) ... [2021-08-21 11:44:33,107 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2021-08-21 11:44:33,112 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:44:33,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:44:33,113 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-21 11:44:33,113 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:44:33,191 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,191 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,192 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,194 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,195 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,196 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,197 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,198 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,199 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,200 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,201 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,202 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,203 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,204 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,205 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,206 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,208 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,213 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,214 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,215 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,216 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,217 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,220 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,220 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,220 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,220 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,221 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,229 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,230 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,242 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 11:44:33,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:44:33,294 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 11:44:33,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-21 11:44:33,306 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 167 places, 169 transitions, 354 flow [2021-08-21 11:44:33,548 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9274 states, 9264 states have (on average 2.8561096718480137) internal successors, (26459), 9273 states have internal predecessors, (26459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 9274 states, 9264 states have (on average 2.8561096718480137) internal successors, (26459), 9273 states have internal predecessors, (26459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:33,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-21 11:44:33,598 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:33,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:33,599 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:33,604 INFO L82 PathProgramCache]: Analyzing trace with hash -988927327, now seen corresponding path program 1 times [2021-08-21 11:44:33,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:33,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446042417] [2021-08-21 11:44:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:33,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:34,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:34,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:34,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446042417] [2021-08-21 11:44:34,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446042417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:34,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:34,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:34,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192135386] [2021-08-21 11:44:34,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:34,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:34,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:34,191 INFO L87 Difference]: Start difference. First operand has 9274 states, 9264 states have (on average 2.8561096718480137) internal successors, (26459), 9273 states have internal predecessors, (26459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:34,622 INFO L93 Difference]: Finished difference Result 8818 states and 24708 transitions. [2021-08-21 11:44:34,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-21 11:44:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-21 11:44:34,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:34,692 INFO L225 Difference]: With dead ends: 8818 [2021-08-21 11:44:34,692 INFO L226 Difference]: Without dead ends: 7237 [2021-08-21 11:44:34,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 95.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-21 11:44:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7237 states. [2021-08-21 11:44:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7237 to 7236. [2021-08-21 11:44:35,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7229 states have (on average 2.7923640890856274) internal successors, (20186), 7235 states have internal predecessors, (20186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 20186 transitions. [2021-08-21 11:44:35,108 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 20186 transitions. Word has length 36 [2021-08-21 11:44:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:35,109 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 20186 transitions. [2021-08-21 11:44:35,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 20186 transitions. [2021-08-21 11:44:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-21 11:44:35,111 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:35,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:35,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:44:35,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1449842663, now seen corresponding path program 1 times [2021-08-21 11:44:35,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:35,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507848374] [2021-08-21 11:44:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:35,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:35,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:35,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507848374] [2021-08-21 11:44:35,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507848374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:35,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:35,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:35,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182496403] [2021-08-21 11:44:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:35,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:35,262 INFO L87 Difference]: Start difference. First operand 7236 states and 20186 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:35,520 INFO L93 Difference]: Finished difference Result 7238 states and 20188 transitions. [2021-08-21 11:44:35,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-21 11:44:35,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-21 11:44:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:35,564 INFO L225 Difference]: With dead ends: 7238 [2021-08-21 11:44:35,564 INFO L226 Difference]: Without dead ends: 7238 [2021-08-21 11:44:35,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 67.2ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-21 11:44:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7238 states. [2021-08-21 11:44:35,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7238 to 7234. [2021-08-21 11:44:35,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 7228 states have (on average 2.7924737133370225) internal successors, (20184), 7233 states have internal predecessors, (20184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 20184 transitions. [2021-08-21 11:44:35,838 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 20184 transitions. Word has length 42 [2021-08-21 11:44:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:35,839 INFO L470 AbstractCegarLoop]: Abstraction has 7234 states and 20184 transitions. [2021-08-21 11:44:35,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 20184 transitions. [2021-08-21 11:44:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-21 11:44:35,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:35,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:35,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:44:35,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:35,852 INFO L82 PathProgramCache]: Analyzing trace with hash 53531805, now seen corresponding path program 1 times [2021-08-21 11:44:35,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:35,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694243863] [2021-08-21 11:44:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:35,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:36,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:36,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694243863] [2021-08-21 11:44:36,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694243863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:36,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:36,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:36,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491227712] [2021-08-21 11:44:36,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:36,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:36,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:36,096 INFO L87 Difference]: Start difference. First operand 7234 states and 20184 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:36,484 INFO L93 Difference]: Finished difference Result 10485 states and 29150 transitions. [2021-08-21 11:44:36,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:44:36,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-08-21 11:44:36,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:36,551 INFO L225 Difference]: With dead ends: 10485 [2021-08-21 11:44:36,551 INFO L226 Difference]: Without dead ends: 10485 [2021-08-21 11:44:36,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:44:36,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2021-08-21 11:44:36,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 8070. [2021-08-21 11:44:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8070 states, 8065 states have (on average 2.791816491010539) internal successors, (22516), 8069 states have internal predecessors, (22516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8070 states to 8070 states and 22516 transitions. [2021-08-21 11:44:36,904 INFO L78 Accepts]: Start accepts. Automaton has 8070 states and 22516 transitions. Word has length 60 [2021-08-21 11:44:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:36,907 INFO L470 AbstractCegarLoop]: Abstraction has 8070 states and 22516 transitions. [2021-08-21 11:44:36,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8070 states and 22516 transitions. [2021-08-21 11:44:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-21 11:44:36,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:36,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:36,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:44:36,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:36,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:36,916 INFO L82 PathProgramCache]: Analyzing trace with hash 143085669, now seen corresponding path program 1 times [2021-08-21 11:44:36,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:36,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712355949] [2021-08-21 11:44:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:36,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:37,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:37,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712355949] [2021-08-21 11:44:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712355949] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:37,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:37,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:37,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105577339] [2021-08-21 11:44:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:37,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:37,056 INFO L87 Difference]: Start difference. First operand 8070 states and 22516 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:37,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:37,419 INFO L93 Difference]: Finished difference Result 11321 states and 31321 transitions. [2021-08-21 11:44:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:44:37,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-21 11:44:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:37,454 INFO L225 Difference]: With dead ends: 11321 [2021-08-21 11:44:37,455 INFO L226 Difference]: Without dead ends: 9532 [2021-08-21 11:44:37,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:44:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9532 states. [2021-08-21 11:44:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9532 to 9210. [2021-08-21 11:44:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9210 states, 9206 states have (on average 2.792092113838801) internal successors, (25704), 9209 states have internal predecessors, (25704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9210 states to 9210 states and 25704 transitions. [2021-08-21 11:44:37,755 INFO L78 Accepts]: Start accepts. Automaton has 9210 states and 25704 transitions. Word has length 66 [2021-08-21 11:44:37,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:37,756 INFO L470 AbstractCegarLoop]: Abstraction has 9210 states and 25704 transitions. [2021-08-21 11:44:37,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9210 states and 25704 transitions. [2021-08-21 11:44:37,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-21 11:44:37,766 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:37,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:37,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:44:37,767 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:37,767 INFO L82 PathProgramCache]: Analyzing trace with hash -463030957, now seen corresponding path program 1 times [2021-08-21 11:44:37,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:37,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523209896] [2021-08-21 11:44:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:37,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:37,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:37,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523209896] [2021-08-21 11:44:37,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523209896] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:37,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:37,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 11:44:37,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777076227] [2021-08-21 11:44:37,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 11:44:37,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 11:44:37,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 11:44:37,860 INFO L87 Difference]: Start difference. First operand 9210 states and 25704 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:37,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:37,910 INFO L93 Difference]: Finished difference Result 3385 states and 9194 transitions. [2021-08-21 11:44:37,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 11:44:37,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-08-21 11:44:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:37,921 INFO L225 Difference]: With dead ends: 3385 [2021-08-21 11:44:37,921 INFO L226 Difference]: Without dead ends: 3385 [2021-08-21 11:44:37,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.6ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:44:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2021-08-21 11:44:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3385. [2021-08-21 11:44:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3385 states, 3383 states have (on average 2.7177061779485663) internal successors, (9194), 3384 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3385 states to 3385 states and 9194 transitions. [2021-08-21 11:44:38,017 INFO L78 Accepts]: Start accepts. Automaton has 3385 states and 9194 transitions. Word has length 80 [2021-08-21 11:44:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:38,018 INFO L470 AbstractCegarLoop]: Abstraction has 3385 states and 9194 transitions. [2021-08-21 11:44:38,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3385 states and 9194 transitions. [2021-08-21 11:44:38,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:38,028 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:38,028 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:38,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:44:38,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:38,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:38,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1313369940, now seen corresponding path program 1 times [2021-08-21 11:44:38,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:38,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837635643] [2021-08-21 11:44:38,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:38,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:38,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:38,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837635643] [2021-08-21 11:44:38,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837635643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:39,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:39,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-08-21 11:44:39,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811309379] [2021-08-21 11:44:39,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-21 11:44:39,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-21 11:44:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-08-21 11:44:39,001 INFO L87 Difference]: Start difference. First operand 3385 states and 9194 transitions. Second operand has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:41,413 INFO L93 Difference]: Finished difference Result 4141 states and 11240 transitions. [2021-08-21 11:44:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-21 11:44:41,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:41,426 INFO L225 Difference]: With dead ends: 4141 [2021-08-21 11:44:41,426 INFO L226 Difference]: Without dead ends: 4141 [2021-08-21 11:44:41,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1985.5ms TimeCoverageRelationStatistics Valid=398, Invalid=1324, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 11:44:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2021-08-21 11:44:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 3889. [2021-08-21 11:44:41,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3889 states, 3887 states have (on average 2.723437098019038) internal successors, (10586), 3888 states have internal predecessors, (10586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3889 states to 3889 states and 10586 transitions. [2021-08-21 11:44:41,517 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 10586 transitions. Word has length 114 [2021-08-21 11:44:41,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:41,518 INFO L470 AbstractCegarLoop]: Abstraction has 3889 states and 10586 transitions. [2021-08-21 11:44:41,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.181818181818182) internal successors, (114), 22 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 10586 transitions. [2021-08-21 11:44:41,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:41,534 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:41,534 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:41,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:44:41,534 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:41,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1290537024, now seen corresponding path program 2 times [2021-08-21 11:44:41,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:41,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551249601] [2021-08-21 11:44:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:41,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:42,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:42,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551249601] [2021-08-21 11:44:42,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551249601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:42,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:42,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:42,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818234673] [2021-08-21 11:44:42,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:42,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:42,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:42,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:42,333 INFO L87 Difference]: Start difference. First operand 3889 states and 10586 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:43,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:43,804 INFO L93 Difference]: Finished difference Result 4678 states and 12484 transitions. [2021-08-21 11:44:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:44:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:43,818 INFO L225 Difference]: With dead ends: 4678 [2021-08-21 11:44:43,818 INFO L226 Difference]: Without dead ends: 4678 [2021-08-21 11:44:43,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1163.3ms TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:44:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2021-08-21 11:44:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4424. [2021-08-21 11:44:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4422 states have (on average 2.6976481230212572) internal successors, (11929), 4423 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 11929 transitions. [2021-08-21 11:44:43,939 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 11929 transitions. Word has length 114 [2021-08-21 11:44:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:43,940 INFO L470 AbstractCegarLoop]: Abstraction has 4424 states and 11929 transitions. [2021-08-21 11:44:43,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 11929 transitions. [2021-08-21 11:44:43,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:43,953 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:43,953 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:43,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:44:43,954 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:43,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1139290354, now seen corresponding path program 3 times [2021-08-21 11:44:43,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:43,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306083185] [2021-08-21 11:44:43,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:43,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:44,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:44,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306083185] [2021-08-21 11:44:44,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306083185] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:44,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:44,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:44,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618231234] [2021-08-21 11:44:44,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:44,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:44,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:44,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:44,783 INFO L87 Difference]: Start difference. First operand 4424 states and 11929 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:46,136 INFO L93 Difference]: Finished difference Result 5035 states and 13214 transitions. [2021-08-21 11:44:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:44:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:46,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:46,150 INFO L225 Difference]: With dead ends: 5035 [2021-08-21 11:44:46,150 INFO L226 Difference]: Without dead ends: 5035 [2021-08-21 11:44:46,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1161.4ms TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:44:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5035 states. [2021-08-21 11:44:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5035 to 4541. [2021-08-21 11:44:46,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4539 states have (on average 2.686935448336638) internal successors, (12196), 4540 states have internal predecessors, (12196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 12196 transitions. [2021-08-21 11:44:46,260 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 12196 transitions. Word has length 114 [2021-08-21 11:44:46,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:46,260 INFO L470 AbstractCegarLoop]: Abstraction has 4541 states and 12196 transitions. [2021-08-21 11:44:46,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:46,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 12196 transitions. [2021-08-21 11:44:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:46,272 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:46,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:46,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:44:46,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1563503500, now seen corresponding path program 4 times [2021-08-21 11:44:46,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:46,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426089103] [2021-08-21 11:44:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:46,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:46,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:46,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426089103] [2021-08-21 11:44:46,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426089103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:46,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:46,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:46,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107870833] [2021-08-21 11:44:46,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:46,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:46,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:46,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:46,941 INFO L87 Difference]: Start difference. First operand 4541 states and 12196 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:48,284 INFO L93 Difference]: Finished difference Result 5343 states and 13928 transitions. [2021-08-21 11:44:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:44:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:48,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:48,296 INFO L225 Difference]: With dead ends: 5343 [2021-08-21 11:44:48,296 INFO L226 Difference]: Without dead ends: 5343 [2021-08-21 11:44:48,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1137.8ms TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:44:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2021-08-21 11:44:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 4588. [2021-08-21 11:44:48,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4586 states have (on average 2.684038377671173) internal successors, (12309), 4587 states have internal predecessors, (12309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 12309 transitions. [2021-08-21 11:44:48,410 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 12309 transitions. Word has length 114 [2021-08-21 11:44:48,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:48,411 INFO L470 AbstractCegarLoop]: Abstraction has 4588 states and 12309 transitions. [2021-08-21 11:44:48,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 12309 transitions. [2021-08-21 11:44:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:48,423 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:48,423 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:48,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 11:44:48,424 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1957279472, now seen corresponding path program 5 times [2021-08-21 11:44:48,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:48,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153642390] [2021-08-21 11:44:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:48,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:49,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:49,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153642390] [2021-08-21 11:44:49,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153642390] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:49,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:49,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:49,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558590534] [2021-08-21 11:44:49,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:49,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:49,064 INFO L87 Difference]: Start difference. First operand 4588 states and 12309 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:50,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:50,290 INFO L93 Difference]: Finished difference Result 5484 states and 14267 transitions. [2021-08-21 11:44:50,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:44:50,290 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:50,300 INFO L225 Difference]: With dead ends: 5484 [2021-08-21 11:44:50,301 INFO L226 Difference]: Without dead ends: 5484 [2021-08-21 11:44:50,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1026.9ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:44:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2021-08-21 11:44:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 4682. [2021-08-21 11:44:50,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4682 states, 4680 states have (on average 2.6784188034188032) internal successors, (12535), 4681 states have internal predecessors, (12535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:50,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4682 states to 4682 states and 12535 transitions. [2021-08-21 11:44:50,411 INFO L78 Accepts]: Start accepts. Automaton has 4682 states and 12535 transitions. Word has length 114 [2021-08-21 11:44:50,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:50,412 INFO L470 AbstractCegarLoop]: Abstraction has 4682 states and 12535 transitions. [2021-08-21 11:44:50,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:50,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4682 states and 12535 transitions. [2021-08-21 11:44:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:50,461 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:50,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:50,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 11:44:50,462 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:50,463 INFO L82 PathProgramCache]: Analyzing trace with hash -39473810, now seen corresponding path program 6 times [2021-08-21 11:44:50,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:50,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945905545] [2021-08-21 11:44:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:50,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:51,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:51,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:51,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945905545] [2021-08-21 11:44:51,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945905545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:51,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:51,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:51,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177208174] [2021-08-21 11:44:51,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:51,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:51,085 INFO L87 Difference]: Start difference. First operand 4682 states and 12535 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:52,327 INFO L93 Difference]: Finished difference Result 5625 states and 14606 transitions. [2021-08-21 11:44:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:44:52,328 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:52,338 INFO L225 Difference]: With dead ends: 5625 [2021-08-21 11:44:52,338 INFO L226 Difference]: Without dead ends: 5625 [2021-08-21 11:44:52,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 984.6ms TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:44:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5625 states. [2021-08-21 11:44:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5625 to 4729. [2021-08-21 11:44:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 4727 states have (on average 2.6756928284324095) internal successors, (12648), 4728 states have internal predecessors, (12648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 12648 transitions. [2021-08-21 11:44:52,453 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 12648 transitions. Word has length 114 [2021-08-21 11:44:52,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:52,454 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 12648 transitions. [2021-08-21 11:44:52,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:52,454 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 12648 transitions. [2021-08-21 11:44:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:52,469 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:52,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:52,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 11:44:52,469 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:52,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2119313302, now seen corresponding path program 7 times [2021-08-21 11:44:52,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:52,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881484366] [2021-08-21 11:44:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:52,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:53,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:53,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881484366] [2021-08-21 11:44:53,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881484366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:53,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:53,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:53,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382240814] [2021-08-21 11:44:53,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:53,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:53,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:53,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:53,079 INFO L87 Difference]: Start difference. First operand 4729 states and 12648 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:54,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:54,274 INFO L93 Difference]: Finished difference Result 5102 states and 13434 transitions. [2021-08-21 11:44:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:44:54,274 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:54,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:54,282 INFO L225 Difference]: With dead ends: 5102 [2021-08-21 11:44:54,282 INFO L226 Difference]: Without dead ends: 5102 [2021-08-21 11:44:54,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 981.5ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:44:54,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-08-21 11:44:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4424. [2021-08-21 11:44:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4422 states have (on average 2.6976481230212572) internal successors, (11929), 4423 states have internal predecessors, (11929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 11929 transitions. [2021-08-21 11:44:54,382 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 11929 transitions. Word has length 114 [2021-08-21 11:44:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:54,382 INFO L470 AbstractCegarLoop]: Abstraction has 4424 states and 11929 transitions. [2021-08-21 11:44:54,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 11929 transitions. [2021-08-21 11:44:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:54,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:54,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:54,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 11:44:54,392 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:54,393 INFO L82 PathProgramCache]: Analyzing trace with hash -600181116, now seen corresponding path program 8 times [2021-08-21 11:44:54,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:54,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686581328] [2021-08-21 11:44:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:54,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:54,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:54,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686581328] [2021-08-21 11:44:54,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686581328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:54,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:54,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:44:54,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834193995] [2021-08-21 11:44:54,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:44:54,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:54,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:44:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:44:54,966 INFO L87 Difference]: Start difference. First operand 4424 states and 11929 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:56,453 INFO L93 Difference]: Finished difference Result 8526 states and 23087 transitions. [2021-08-21 11:44:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:44:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:56,467 INFO L225 Difference]: With dead ends: 8526 [2021-08-21 11:44:56,467 INFO L226 Difference]: Without dead ends: 8526 [2021-08-21 11:44:56,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1287.5ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:44:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2021-08-21 11:44:56,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 4480. [2021-08-21 11:44:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4478 states have (on average 2.700535953550692) internal successors, (12093), 4479 states have internal predecessors, (12093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 12093 transitions. [2021-08-21 11:44:56,596 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 12093 transitions. Word has length 114 [2021-08-21 11:44:56,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:56,596 INFO L470 AbstractCegarLoop]: Abstraction has 4480 states and 12093 transitions. [2021-08-21 11:44:56,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:56,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 12093 transitions. [2021-08-21 11:44:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:56,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:56,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:56,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 11:44:56,606 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 470838372, now seen corresponding path program 9 times [2021-08-21 11:44:56,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:56,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462192939] [2021-08-21 11:44:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:56,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:57,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:57,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462192939] [2021-08-21 11:44:57,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462192939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:57,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:57,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:44:57,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307519775] [2021-08-21 11:44:57,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:44:57,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:57,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:44:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:44:57,149 INFO L87 Difference]: Start difference. First operand 4480 states and 12093 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:58,534 INFO L93 Difference]: Finished difference Result 8274 states and 22349 transitions. [2021-08-21 11:44:58,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:44:58,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:44:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:58,549 INFO L225 Difference]: With dead ends: 8274 [2021-08-21 11:44:58,550 INFO L226 Difference]: Without dead ends: 8274 [2021-08-21 11:44:58,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1232.3ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:44:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8274 states. [2021-08-21 11:44:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8274 to 4494. [2021-08-21 11:44:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.701246660730187) internal successors, (12134), 4493 states have internal predecessors, (12134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12134 transitions. [2021-08-21 11:44:58,666 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12134 transitions. Word has length 114 [2021-08-21 11:44:58,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:58,666 INFO L470 AbstractCegarLoop]: Abstraction has 4494 states and 12134 transitions. [2021-08-21 11:44:58,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12134 transitions. [2021-08-21 11:44:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:44:58,675 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:58,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:58,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 11:44:58,676 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:44:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash -768281726, now seen corresponding path program 10 times [2021-08-21 11:44:58,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:58,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784013777] [2021-08-21 11:44:58,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:58,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:59,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:59,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784013777] [2021-08-21 11:44:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784013777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:59,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:59,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:44:59,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689681753] [2021-08-21 11:44:59,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:44:59,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:59,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:44:59,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:44:59,188 INFO L87 Difference]: Start difference. First operand 4494 states and 12134 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:00,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:00,708 INFO L93 Difference]: Finished difference Result 7772 states and 20683 transitions. [2021-08-21 11:45:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:00,721 INFO L225 Difference]: With dead ends: 7772 [2021-08-21 11:45:00,721 INFO L226 Difference]: Without dead ends: 7772 [2021-08-21 11:45:00,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1320.5ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2021-08-21 11:45:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 4592. [2021-08-21 11:45:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4590 states have (on average 2.6877995642701524) internal successors, (12337), 4591 states have internal predecessors, (12337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12337 transitions. [2021-08-21 11:45:00,837 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12337 transitions. Word has length 114 [2021-08-21 11:45:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:00,837 INFO L470 AbstractCegarLoop]: Abstraction has 4592 states and 12337 transitions. [2021-08-21 11:45:00,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12337 transitions. [2021-08-21 11:45:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:00,849 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:00,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:00,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 11:45:00,850 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1335257350, now seen corresponding path program 11 times [2021-08-21 11:45:00,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:00,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8068997] [2021-08-21 11:45:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:00,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:01,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:01,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8068997] [2021-08-21 11:45:01,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8068997] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:01,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:01,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:45:01,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276866125] [2021-08-21 11:45:01,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:45:01,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:45:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:45:01,526 INFO L87 Difference]: Start difference. First operand 4592 states and 12337 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:03,023 INFO L93 Difference]: Finished difference Result 6241 states and 16501 transitions. [2021-08-21 11:45:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:45:03,024 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:03,033 INFO L225 Difference]: With dead ends: 6241 [2021-08-21 11:45:03,034 INFO L226 Difference]: Without dead ends: 6241 [2021-08-21 11:45:03,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1296.1ms TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2021-08-21 11:45:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2021-08-21 11:45:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 4732. [2021-08-21 11:45:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4730 states have (on average 2.6890063424947144) internal successors, (12719), 4731 states have internal predecessors, (12719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 12719 transitions. [2021-08-21 11:45:03,125 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 12719 transitions. Word has length 114 [2021-08-21 11:45:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:03,125 INFO L470 AbstractCegarLoop]: Abstraction has 4732 states and 12719 transitions. [2021-08-21 11:45:03,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:03,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 12719 transitions. [2021-08-21 11:45:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:03,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:03,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 11:45:03,139 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1367279674, now seen corresponding path program 12 times [2021-08-21 11:45:03,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:03,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639006367] [2021-08-21 11:45:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:03,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:03,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:03,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:03,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639006367] [2021-08-21 11:45:03,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639006367] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:03,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:45:03,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702677297] [2021-08-21 11:45:03,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:45:03,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:45:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:45:03,728 INFO L87 Difference]: Start difference. First operand 4732 states and 12719 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:04,957 INFO L93 Difference]: Finished difference Result 6628 states and 17262 transitions. [2021-08-21 11:45:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:45:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:04,969 INFO L225 Difference]: With dead ends: 6628 [2021-08-21 11:45:04,970 INFO L226 Difference]: Without dead ends: 6628 [2021-08-21 11:45:04,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1033.3ms TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:45:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-08-21 11:45:05,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 4822. [2021-08-21 11:45:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4820 states have (on average 2.684232365145228) internal successors, (12938), 4821 states have internal predecessors, (12938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 12938 transitions. [2021-08-21 11:45:05,058 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 12938 transitions. Word has length 114 [2021-08-21 11:45:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:05,058 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 12938 transitions. [2021-08-21 11:45:05,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 12938 transitions. [2021-08-21 11:45:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:05,069 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:05,069 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:05,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 11:45:05,069 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:05,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:05,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1250552132, now seen corresponding path program 13 times [2021-08-21 11:45:05,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:05,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032371545] [2021-08-21 11:45:05,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:05,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:05,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:05,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032371545] [2021-08-21 11:45:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032371545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:05,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:05,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:05,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431134736] [2021-08-21 11:45:05,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:05,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:05,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:05,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:05,590 INFO L87 Difference]: Start difference. First operand 4822 states and 12938 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:07,141 INFO L93 Difference]: Finished difference Result 8532 states and 22836 transitions. [2021-08-21 11:45:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:07,142 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:07,157 INFO L225 Difference]: With dead ends: 8532 [2021-08-21 11:45:07,157 INFO L226 Difference]: Without dead ends: 8532 [2021-08-21 11:45:07,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1369.9ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8532 states. [2021-08-21 11:45:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8532 to 4822. [2021-08-21 11:45:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4820 states have (on average 2.684232365145228) internal successors, (12938), 4821 states have internal predecessors, (12938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:07,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 12938 transitions. [2021-08-21 11:45:07,275 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 12938 transitions. Word has length 114 [2021-08-21 11:45:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:07,276 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 12938 transitions. [2021-08-21 11:45:07,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:07,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 12938 transitions. [2021-08-21 11:45:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:07,284 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:07,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:07,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 11:45:07,285 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:07,285 INFO L82 PathProgramCache]: Analyzing trace with hash 305851330, now seen corresponding path program 14 times [2021-08-21 11:45:07,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:07,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218524284] [2021-08-21 11:45:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:07,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:07,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:07,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218524284] [2021-08-21 11:45:07,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218524284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:07,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:07,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:07,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586132910] [2021-08-21 11:45:07,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:07,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:07,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:07,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:07,790 INFO L87 Difference]: Start difference. First operand 4822 states and 12938 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:09,299 INFO L93 Difference]: Finished difference Result 6763 states and 17995 transitions. [2021-08-21 11:45:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:09,310 INFO L225 Difference]: With dead ends: 6763 [2021-08-21 11:45:09,311 INFO L226 Difference]: Without dead ends: 6763 [2021-08-21 11:45:09,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1264.0ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-08-21 11:45:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 4822. [2021-08-21 11:45:09,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4820 states have (on average 2.684232365145228) internal successors, (12938), 4821 states have internal predecessors, (12938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 12938 transitions. [2021-08-21 11:45:09,386 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 12938 transitions. Word has length 114 [2021-08-21 11:45:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:09,387 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 12938 transitions. [2021-08-21 11:45:09,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,387 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 12938 transitions. [2021-08-21 11:45:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:09,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:09,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 11:45:09,396 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash -64388114, now seen corresponding path program 15 times [2021-08-21 11:45:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:09,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968842363] [2021-08-21 11:45:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:09,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:09,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:09,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968842363] [2021-08-21 11:45:09,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968842363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:09,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:09,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:09,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786880706] [2021-08-21 11:45:09,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:09,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:09,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:09,919 INFO L87 Difference]: Start difference. First operand 4822 states and 12938 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:11,538 INFO L93 Difference]: Finished difference Result 11114 states and 29671 transitions. [2021-08-21 11:45:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:11,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:11,560 INFO L225 Difference]: With dead ends: 11114 [2021-08-21 11:45:11,561 INFO L226 Difference]: Without dead ends: 11114 [2021-08-21 11:45:11,561 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1355.0ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:11,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11114 states. [2021-08-21 11:45:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11114 to 4910. [2021-08-21 11:45:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 4908 states have (on average 2.6882640586797066) internal successors, (13194), 4909 states have internal predecessors, (13194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 13194 transitions. [2021-08-21 11:45:11,703 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 13194 transitions. Word has length 114 [2021-08-21 11:45:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:11,703 INFO L470 AbstractCegarLoop]: Abstraction has 4910 states and 13194 transitions. [2021-08-21 11:45:11,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:11,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 13194 transitions. [2021-08-21 11:45:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:11,712 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:11,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:11,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 11:45:11,713 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:11,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1006631374, now seen corresponding path program 16 times [2021-08-21 11:45:11,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:11,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087006588] [2021-08-21 11:45:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:11,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:12,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:12,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:12,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087006588] [2021-08-21 11:45:12,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087006588] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:12,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:12,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:12,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696388446] [2021-08-21 11:45:12,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:12,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:12,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:12,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:12,206 INFO L87 Difference]: Start difference. First operand 4910 states and 13194 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:13,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:13,759 INFO L93 Difference]: Finished difference Result 13542 states and 36028 transitions. [2021-08-21 11:45:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:13,784 INFO L225 Difference]: With dead ends: 13542 [2021-08-21 11:45:13,784 INFO L226 Difference]: Without dead ends: 13542 [2021-08-21 11:45:13,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1317.2ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13542 states. [2021-08-21 11:45:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13542 to 4926. [2021-08-21 11:45:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4924 states have (on average 2.6888708367181153) internal successors, (13240), 4925 states have internal predecessors, (13240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 13240 transitions. [2021-08-21 11:45:13,911 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 13240 transitions. Word has length 114 [2021-08-21 11:45:13,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:13,912 INFO L470 AbstractCegarLoop]: Abstraction has 4926 states and 13240 transitions. [2021-08-21 11:45:13,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 13240 transitions. [2021-08-21 11:45:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:13,921 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:13,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:13,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 11:45:13,921 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:13,922 INFO L82 PathProgramCache]: Analyzing trace with hash -232488724, now seen corresponding path program 17 times [2021-08-21 11:45:13,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:13,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055171951] [2021-08-21 11:45:13,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:13,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:14,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:14,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055171951] [2021-08-21 11:45:14,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055171951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:14,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:14,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:14,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818139103] [2021-08-21 11:45:14,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:14,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:14,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:14,433 INFO L87 Difference]: Start difference. First operand 4926 states and 13240 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:15,915 INFO L93 Difference]: Finished difference Result 11942 states and 31548 transitions. [2021-08-21 11:45:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:15,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:15,933 INFO L225 Difference]: With dead ends: 11942 [2021-08-21 11:45:15,934 INFO L226 Difference]: Without dead ends: 11942 [2021-08-21 11:45:15,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1268.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11942 states. [2021-08-21 11:45:16,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11942 to 4898. [2021-08-21 11:45:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4898 states, 4896 states have (on average 2.6838235294117645) internal successors, (13140), 4897 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4898 states to 4898 states and 13140 transitions. [2021-08-21 11:45:16,065 INFO L78 Accepts]: Start accepts. Automaton has 4898 states and 13140 transitions. Word has length 114 [2021-08-21 11:45:16,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:16,065 INFO L470 AbstractCegarLoop]: Abstraction has 4898 states and 13140 transitions. [2021-08-21 11:45:16,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4898 states and 13140 transitions. [2021-08-21 11:45:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:16,074 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:16,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:16,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 11:45:16,074 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:16,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:16,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1152861300, now seen corresponding path program 18 times [2021-08-21 11:45:16,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:16,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612495622] [2021-08-21 11:45:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:16,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:16,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:16,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612495622] [2021-08-21 11:45:16,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612495622] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:16,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:16,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:16,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071800113] [2021-08-21 11:45:16,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:16,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:16,558 INFO L87 Difference]: Start difference. First operand 4898 states and 13140 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:18,037 INFO L93 Difference]: Finished difference Result 10744 states and 28611 transitions. [2021-08-21 11:45:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:18,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:18,054 INFO L225 Difference]: With dead ends: 10744 [2021-08-21 11:45:18,054 INFO L226 Difference]: Without dead ends: 10744 [2021-08-21 11:45:18,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1314.7ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10744 states. [2021-08-21 11:45:18,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10744 to 4928. [2021-08-21 11:45:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4928 states, 4926 states have (on average 2.685140073081608) internal successors, (13227), 4927 states have internal predecessors, (13227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4928 states to 4928 states and 13227 transitions. [2021-08-21 11:45:18,162 INFO L78 Accepts]: Start accepts. Automaton has 4928 states and 13227 transitions. Word has length 114 [2021-08-21 11:45:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:18,162 INFO L470 AbstractCegarLoop]: Abstraction has 4928 states and 13227 transitions. [2021-08-21 11:45:18,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4928 states and 13227 transitions. [2021-08-21 11:45:18,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:18,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:18,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:18,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 11:45:18,168 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:18,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:18,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1902985898, now seen corresponding path program 19 times [2021-08-21 11:45:18,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:18,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771802360] [2021-08-21 11:45:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:18,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:18,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:18,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:18,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771802360] [2021-08-21 11:45:18,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771802360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:18,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:18,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:18,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840363586] [2021-08-21 11:45:18,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:18,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:18,648 INFO L87 Difference]: Start difference. First operand 4928 states and 13227 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:20,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:20,043 INFO L93 Difference]: Finished difference Result 11517 states and 30343 transitions. [2021-08-21 11:45:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:20,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:20,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:20,063 INFO L225 Difference]: With dead ends: 11517 [2021-08-21 11:45:20,064 INFO L226 Difference]: Without dead ends: 11517 [2021-08-21 11:45:20,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1261.8ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11517 states. [2021-08-21 11:45:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11517 to 4912. [2021-08-21 11:45:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4910 states have (on average 2.684521384928717) internal successors, (13181), 4911 states have internal predecessors, (13181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 13181 transitions. [2021-08-21 11:45:20,185 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 13181 transitions. Word has length 114 [2021-08-21 11:45:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:20,185 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 13181 transitions. [2021-08-21 11:45:20,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 13181 transitions. [2021-08-21 11:45:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:20,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:20,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:20,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 11:45:20,192 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:20,192 INFO L82 PathProgramCache]: Analyzing trace with hash 692644302, now seen corresponding path program 20 times [2021-08-21 11:45:20,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:20,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127414292] [2021-08-21 11:45:20,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:20,193 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:20,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:20,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127414292] [2021-08-21 11:45:20,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127414292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:20,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:20,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:20,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704946663] [2021-08-21 11:45:20,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:20,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:20,673 INFO L87 Difference]: Start difference. First operand 4912 states and 13181 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:22,083 INFO L93 Difference]: Finished difference Result 10883 states and 28828 transitions. [2021-08-21 11:45:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:22,102 INFO L225 Difference]: With dead ends: 10883 [2021-08-21 11:45:22,102 INFO L226 Difference]: Without dead ends: 10883 [2021-08-21 11:45:22,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1263.4ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10883 states. [2021-08-21 11:45:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10883 to 4926. [2021-08-21 11:45:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4926 states, 4924 states have (on average 2.6852152721364746) internal successors, (13222), 4925 states have internal predecessors, (13222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4926 states to 4926 states and 13222 transitions. [2021-08-21 11:45:22,228 INFO L78 Accepts]: Start accepts. Automaton has 4926 states and 13222 transitions. Word has length 114 [2021-08-21 11:45:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:22,228 INFO L470 AbstractCegarLoop]: Abstraction has 4926 states and 13222 transitions. [2021-08-21 11:45:22,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4926 states and 13222 transitions. [2021-08-21 11:45:22,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:22,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:22,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:22,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-21 11:45:22,258 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash -239374326, now seen corresponding path program 21 times [2021-08-21 11:45:22,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:22,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096753418] [2021-08-21 11:45:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:22,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:23,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:23,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096753418] [2021-08-21 11:45:23,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096753418] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:23,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:23,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:23,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223309978] [2021-08-21 11:45:23,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:23,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:23,011 INFO L87 Difference]: Start difference. First operand 4926 states and 13222 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:24,389 INFO L93 Difference]: Finished difference Result 8390 states and 22380 transitions. [2021-08-21 11:45:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:24,390 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:24,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:24,404 INFO L225 Difference]: With dead ends: 8390 [2021-08-21 11:45:24,404 INFO L226 Difference]: Without dead ends: 8390 [2021-08-21 11:45:24,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1332.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2021-08-21 11:45:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 5010. [2021-08-21 11:45:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5008 states have (on average 2.689297124600639) internal successors, (13468), 5009 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 13468 transitions. [2021-08-21 11:45:24,522 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 13468 transitions. Word has length 114 [2021-08-21 11:45:24,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:24,522 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 13468 transitions. [2021-08-21 11:45:24,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 13468 transitions. [2021-08-21 11:45:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:24,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:24,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:24,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-21 11:45:24,532 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1920088446, now seen corresponding path program 22 times [2021-08-21 11:45:24,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:24,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685073028] [2021-08-21 11:45:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:24,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:25,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:25,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685073028] [2021-08-21 11:45:25,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685073028] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:25,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:25,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:45:25,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951209345] [2021-08-21 11:45:25,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:45:25,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:45:25,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:45:25,065 INFO L87 Difference]: Start difference. First operand 5010 states and 13468 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:26,461 INFO L93 Difference]: Finished difference Result 6111 states and 15809 transitions. [2021-08-21 11:45:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:45:26,462 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:26,471 INFO L225 Difference]: With dead ends: 6111 [2021-08-21 11:45:26,471 INFO L226 Difference]: Without dead ends: 6111 [2021-08-21 11:45:26,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1135.4ms TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:45:26,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-08-21 11:45:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 5020. [2021-08-21 11:45:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5018 states have (on average 2.6909127142287765) internal successors, (13503), 5019 states have internal predecessors, (13503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:26,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 13503 transitions. [2021-08-21 11:45:26,546 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 13503 transitions. Word has length 114 [2021-08-21 11:45:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:26,546 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 13503 transitions. [2021-08-21 11:45:26,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 13503 transitions. [2021-08-21 11:45:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:26,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:26,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:26,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-21 11:45:26,556 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:26,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1611078418, now seen corresponding path program 23 times [2021-08-21 11:45:26,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:26,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898947026] [2021-08-21 11:45:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:26,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:27,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:27,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898947026] [2021-08-21 11:45:27,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898947026] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:27,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:27,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:27,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395244090] [2021-08-21 11:45:27,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:27,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:27,060 INFO L87 Difference]: Start difference. First operand 5020 states and 13503 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:28,496 INFO L93 Difference]: Finished difference Result 13484 states and 36107 transitions. [2021-08-21 11:45:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:28,521 INFO L225 Difference]: With dead ends: 13484 [2021-08-21 11:45:28,521 INFO L226 Difference]: Without dead ends: 13484 [2021-08-21 11:45:28,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1238.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13484 states. [2021-08-21 11:45:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13484 to 5062. [2021-08-21 11:45:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5060 states have (on average 2.6928853754940714) internal successors, (13626), 5061 states have internal predecessors, (13626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 13626 transitions. [2021-08-21 11:45:28,669 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 13626 transitions. Word has length 114 [2021-08-21 11:45:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:28,670 INFO L470 AbstractCegarLoop]: Abstraction has 5062 states and 13626 transitions. [2021-08-21 11:45:28,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:28,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 13626 transitions. [2021-08-21 11:45:28,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:28,679 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:28,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:28,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-21 11:45:28,680 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:28,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash -540058930, now seen corresponding path program 24 times [2021-08-21 11:45:28,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:28,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323786119] [2021-08-21 11:45:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:28,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:29,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:29,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323786119] [2021-08-21 11:45:29,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323786119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:29,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:29,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:29,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642059154] [2021-08-21 11:45:29,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:29,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:29,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:29,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:29,152 INFO L87 Difference]: Start difference. First operand 5062 states and 13626 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:30,636 INFO L93 Difference]: Finished difference Result 13568 states and 36269 transitions. [2021-08-21 11:45:30,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:30,637 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:30,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:30,663 INFO L225 Difference]: With dead ends: 13568 [2021-08-21 11:45:30,663 INFO L226 Difference]: Without dead ends: 13568 [2021-08-21 11:45:30,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1225.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13568 states. [2021-08-21 11:45:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13568 to 5076. [2021-08-21 11:45:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5074 states have (on average 2.6935356720536068) internal successors, (13667), 5075 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 13667 transitions. [2021-08-21 11:45:30,816 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 13667 transitions. Word has length 114 [2021-08-21 11:45:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:30,816 INFO L470 AbstractCegarLoop]: Abstraction has 5076 states and 13667 transitions. [2021-08-21 11:45:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 13667 transitions. [2021-08-21 11:45:30,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:30,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:30,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:30,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-21 11:45:30,825 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:30,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:30,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1779179028, now seen corresponding path program 25 times [2021-08-21 11:45:30,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:30,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26463687] [2021-08-21 11:45:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:30,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:31,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:31,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26463687] [2021-08-21 11:45:31,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26463687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:31,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:31,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:31,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900420748] [2021-08-21 11:45:31,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:31,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:31,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:31,337 INFO L87 Difference]: Start difference. First operand 5076 states and 13667 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:32,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:32,823 INFO L93 Difference]: Finished difference Result 13010 states and 34439 transitions. [2021-08-21 11:45:32,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:32,824 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:32,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:32,851 INFO L225 Difference]: With dead ends: 13010 [2021-08-21 11:45:32,852 INFO L226 Difference]: Without dead ends: 13010 [2021-08-21 11:45:32,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1266.5ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13010 states. [2021-08-21 11:45:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13010 to 5034. [2021-08-21 11:45:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5032 states have (on average 2.6915739268680445) internal successors, (13544), 5033 states have internal predecessors, (13544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 13544 transitions. [2021-08-21 11:45:32,978 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 13544 transitions. Word has length 114 [2021-08-21 11:45:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:32,978 INFO L470 AbstractCegarLoop]: Abstraction has 5034 states and 13544 transitions. [2021-08-21 11:45:32,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:32,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 13544 transitions. [2021-08-21 11:45:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:32,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:32,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:32,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-21 11:45:32,985 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:32,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1866560304, now seen corresponding path program 26 times [2021-08-21 11:45:32,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:32,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924185349] [2021-08-21 11:45:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:32,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:33,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:33,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924185349] [2021-08-21 11:45:33,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924185349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:33,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:33,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:33,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700937948] [2021-08-21 11:45:33,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:33,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:33,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:33,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:33,463 INFO L87 Difference]: Start difference. First operand 5034 states and 13544 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:34,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:34,865 INFO L93 Difference]: Finished difference Result 9812 states and 26115 transitions. [2021-08-21 11:45:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:34,866 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:34,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:34,882 INFO L225 Difference]: With dead ends: 9812 [2021-08-21 11:45:34,882 INFO L226 Difference]: Without dead ends: 9812 [2021-08-21 11:45:34,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1231.2ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9812 states. [2021-08-21 11:45:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9812 to 5020. [2021-08-21 11:45:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5018 states have (on average 2.6909127142287765) internal successors, (13503), 5019 states have internal predecessors, (13503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:34,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 13503 transitions. [2021-08-21 11:45:34,984 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 13503 transitions. Word has length 114 [2021-08-21 11:45:34,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:34,984 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 13503 transitions. [2021-08-21 11:45:34,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:34,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 13503 transitions. [2021-08-21 11:45:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:34,990 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:34,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:34,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-21 11:45:34,991 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2089204366, now seen corresponding path program 27 times [2021-08-21 11:45:34,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:34,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674486573] [2021-08-21 11:45:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:34,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:35,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:35,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:35,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674486573] [2021-08-21 11:45:35,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674486573] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:35,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:35,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:35,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469075086] [2021-08-21 11:45:35,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:35,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:35,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:35,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:35,509 INFO L87 Difference]: Start difference. First operand 5020 states and 13503 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:37,069 INFO L93 Difference]: Finished difference Result 11921 states and 31748 transitions. [2021-08-21 11:45:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:37,089 INFO L225 Difference]: With dead ends: 11921 [2021-08-21 11:45:37,090 INFO L226 Difference]: Without dead ends: 11921 [2021-08-21 11:45:37,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1262.3ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11921 states. [2021-08-21 11:45:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11921 to 5076. [2021-08-21 11:45:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5076 states, 5074 states have (on average 2.6935356720536068) internal successors, (13667), 5075 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5076 states to 5076 states and 13667 transitions. [2021-08-21 11:45:37,209 INFO L78 Accepts]: Start accepts. Automaton has 5076 states and 13667 transitions. Word has length 114 [2021-08-21 11:45:37,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:37,209 INFO L470 AbstractCegarLoop]: Abstraction has 5076 states and 13667 transitions. [2021-08-21 11:45:37,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:37,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5076 states and 13667 transitions. [2021-08-21 11:45:37,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:37,216 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:37,216 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:37,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-21 11:45:37,216 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:37,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:37,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1134743442, now seen corresponding path program 28 times [2021-08-21 11:45:37,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:37,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652869697] [2021-08-21 11:45:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:37,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:37,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:37,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652869697] [2021-08-21 11:45:37,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652869697] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:37,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:37,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:37,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144237848] [2021-08-21 11:45:37,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:37,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:37,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:37,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:37,667 INFO L87 Difference]: Start difference. First operand 5076 states and 13667 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:39,048 INFO L93 Difference]: Finished difference Result 12005 states and 31910 transitions. [2021-08-21 11:45:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:39,070 INFO L225 Difference]: With dead ends: 12005 [2021-08-21 11:45:39,071 INFO L226 Difference]: Without dead ends: 12005 [2021-08-21 11:45:39,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1178.8ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:39,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12005 states. [2021-08-21 11:45:39,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12005 to 5090. [2021-08-21 11:45:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 5088 states have (on average 2.694182389937107) internal successors, (13708), 5089 states have internal predecessors, (13708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 13708 transitions. [2021-08-21 11:45:39,209 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 13708 transitions. Word has length 114 [2021-08-21 11:45:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:39,210 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 13708 transitions. [2021-08-21 11:45:39,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 13708 transitions. [2021-08-21 11:45:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:39,216 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:39,217 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:39,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-21 11:45:39,217 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1921103756, now seen corresponding path program 29 times [2021-08-21 11:45:39,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:39,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937141002] [2021-08-21 11:45:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:39,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:39,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:39,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937141002] [2021-08-21 11:45:39,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937141002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:39,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:39,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:39,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828412857] [2021-08-21 11:45:39,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:39,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:39,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:39,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:39,672 INFO L87 Difference]: Start difference. First operand 5090 states and 13708 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:41,282 INFO L93 Difference]: Finished difference Result 11447 states and 30080 transitions. [2021-08-21 11:45:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:41,304 INFO L225 Difference]: With dead ends: 11447 [2021-08-21 11:45:41,304 INFO L226 Difference]: Without dead ends: 11447 [2021-08-21 11:45:41,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1381.2ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:41,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11447 states. [2021-08-21 11:45:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11447 to 5048. [2021-08-21 11:45:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5046 states have (on average 2.692231470471661) internal successors, (13585), 5047 states have internal predecessors, (13585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 13585 transitions. [2021-08-21 11:45:41,441 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 13585 transitions. Word has length 114 [2021-08-21 11:45:41,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:41,441 INFO L470 AbstractCegarLoop]: Abstraction has 5048 states and 13585 transitions. [2021-08-21 11:45:41,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 13585 transitions. [2021-08-21 11:45:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:41,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:41,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:41,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-21 11:45:41,448 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:41,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:41,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1833722480, now seen corresponding path program 30 times [2021-08-21 11:45:41,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:41,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870132083] [2021-08-21 11:45:41,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:41,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:41,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:41,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870132083] [2021-08-21 11:45:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870132083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:41,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:41,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:41,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714010140] [2021-08-21 11:45:41,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:41,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:41,940 INFO L87 Difference]: Start difference. First operand 5048 states and 13585 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:43,322 INFO L93 Difference]: Finished difference Result 11501 states and 30350 transitions. [2021-08-21 11:45:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:43,322 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:43,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:43,341 INFO L225 Difference]: With dead ends: 11501 [2021-08-21 11:45:43,341 INFO L226 Difference]: Without dead ends: 11501 [2021-08-21 11:45:43,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1191.5ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-08-21 11:45:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 5034. [2021-08-21 11:45:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5032 states have (on average 2.6915739268680445) internal successors, (13544), 5033 states have internal predecessors, (13544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 13544 transitions. [2021-08-21 11:45:43,468 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 13544 transitions. Word has length 114 [2021-08-21 11:45:43,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:43,468 INFO L470 AbstractCegarLoop]: Abstraction has 5034 states and 13544 transitions. [2021-08-21 11:45:43,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:43,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 13544 transitions. [2021-08-21 11:45:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:43,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:43,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:43,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-21 11:45:43,475 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:43,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1705855146, now seen corresponding path program 31 times [2021-08-21 11:45:43,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:43,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774192349] [2021-08-21 11:45:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:43,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:43,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:43,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774192349] [2021-08-21 11:45:43,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774192349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:43,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:43,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:43,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921095036] [2021-08-21 11:45:43,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:43,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:43,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:43,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:43,954 INFO L87 Difference]: Start difference. First operand 5034 states and 13544 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:45,414 INFO L93 Difference]: Finished difference Result 8188 states and 21596 transitions. [2021-08-21 11:45:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:45,415 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:45,429 INFO L225 Difference]: With dead ends: 8188 [2021-08-21 11:45:45,429 INFO L226 Difference]: Without dead ends: 8188 [2021-08-21 11:45:45,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1244.1ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:45,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8188 states. [2021-08-21 11:45:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8188 to 5020. [2021-08-21 11:45:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5020 states, 5018 states have (on average 2.6909127142287765) internal successors, (13503), 5019 states have internal predecessors, (13503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:45,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5020 states to 5020 states and 13503 transitions. [2021-08-21 11:45:45,524 INFO L78 Accepts]: Start accepts. Automaton has 5020 states and 13503 transitions. Word has length 114 [2021-08-21 11:45:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:45,525 INFO L470 AbstractCegarLoop]: Abstraction has 5020 states and 13503 transitions. [2021-08-21 11:45:45,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5020 states and 13503 transitions. [2021-08-21 11:45:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:45,532 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:45,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:45,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-21 11:45:45,533 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1780994014, now seen corresponding path program 32 times [2021-08-21 11:45:45,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:45,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480022413] [2021-08-21 11:45:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:45,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:45,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:45,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480022413] [2021-08-21 11:45:45,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480022413] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:45,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:45,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:45,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848673803] [2021-08-21 11:45:45,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:45,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:45,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:45,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:45,975 INFO L87 Difference]: Start difference. First operand 5020 states and 13503 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:47,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:47,357 INFO L93 Difference]: Finished difference Result 11970 states and 32093 transitions. [2021-08-21 11:45:47,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:47,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:47,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:47,378 INFO L225 Difference]: With dead ends: 11970 [2021-08-21 11:45:47,378 INFO L226 Difference]: Without dead ends: 11970 [2021-08-21 11:45:47,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1203.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11970 states. [2021-08-21 11:45:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11970 to 5196. [2021-08-21 11:45:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5196 states, 5194 states have (on average 2.6983057373892954) internal successors, (14015), 5195 states have internal predecessors, (14015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5196 states to 5196 states and 14015 transitions. [2021-08-21 11:45:47,513 INFO L78 Accepts]: Start accepts. Automaton has 5196 states and 14015 transitions. Word has length 114 [2021-08-21 11:45:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:47,513 INFO L470 AbstractCegarLoop]: Abstraction has 5196 states and 14015 transitions. [2021-08-21 11:45:47,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5196 states and 14015 transitions. [2021-08-21 11:45:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:47,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:47,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:47,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-21 11:45:47,520 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash -709974526, now seen corresponding path program 33 times [2021-08-21 11:45:47,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:47,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799215059] [2021-08-21 11:45:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:47,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:47,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:47,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799215059] [2021-08-21 11:45:47,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799215059] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:47,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:47,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:47,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186693086] [2021-08-21 11:45:47,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:47,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:47,990 INFO L87 Difference]: Start difference. First operand 5196 states and 14015 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:49,399 INFO L93 Difference]: Finished difference Result 14398 states and 38450 transitions. [2021-08-21 11:45:49,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:49,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:49,425 INFO L225 Difference]: With dead ends: 14398 [2021-08-21 11:45:49,425 INFO L226 Difference]: Without dead ends: 14398 [2021-08-21 11:45:49,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1240.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:49,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14398 states. [2021-08-21 11:45:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14398 to 5212. [2021-08-21 11:45:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 5210 states have (on average 2.6988483685220728) internal successors, (14061), 5211 states have internal predecessors, (14061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 14061 transitions. [2021-08-21 11:45:49,564 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 14061 transitions. Word has length 114 [2021-08-21 11:45:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:49,564 INFO L470 AbstractCegarLoop]: Abstraction has 5212 states and 14061 transitions. [2021-08-21 11:45:49,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 14061 transitions. [2021-08-21 11:45:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:49,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:49,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:49,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-21 11:45:49,572 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:49,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1949094624, now seen corresponding path program 34 times [2021-08-21 11:45:49,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:49,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043593139] [2021-08-21 11:45:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:49,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:50,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:50,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043593139] [2021-08-21 11:45:50,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043593139] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:50,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:50,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:50,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349105031] [2021-08-21 11:45:50,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:50,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:50,097 INFO L87 Difference]: Start difference. First operand 5212 states and 14061 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:51,655 INFO L93 Difference]: Finished difference Result 12798 states and 33970 transitions. [2021-08-21 11:45:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:51,656 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:51,677 INFO L225 Difference]: With dead ends: 12798 [2021-08-21 11:45:51,677 INFO L226 Difference]: Without dead ends: 12798 [2021-08-21 11:45:51,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1402.0ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12798 states. [2021-08-21 11:45:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12798 to 5184. [2021-08-21 11:45:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 5182 states have (on average 2.694133539174064) internal successors, (13961), 5183 states have internal predecessors, (13961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 13961 transitions. [2021-08-21 11:45:51,801 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 13961 transitions. Word has length 114 [2021-08-21 11:45:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:51,802 INFO L470 AbstractCegarLoop]: Abstraction has 5184 states and 13961 transitions. [2021-08-21 11:45:51,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:51,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 13961 transitions. [2021-08-21 11:45:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:51,808 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:51,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:51,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-21 11:45:51,813 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:51,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1425500096, now seen corresponding path program 35 times [2021-08-21 11:45:51,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:51,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065055491] [2021-08-21 11:45:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:51,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:52,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:52,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065055491] [2021-08-21 11:45:52,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065055491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:52,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:52,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449971045] [2021-08-21 11:45:52,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:52,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:52,307 INFO L87 Difference]: Start difference. First operand 5184 states and 13961 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:53,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:53,780 INFO L93 Difference]: Finished difference Result 15618 states and 41417 transitions. [2021-08-21 11:45:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:53,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:53,808 INFO L225 Difference]: With dead ends: 15618 [2021-08-21 11:45:53,808 INFO L226 Difference]: Without dead ends: 15618 [2021-08-21 11:45:53,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1295.2ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15618 states. [2021-08-21 11:45:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15618 to 5216. [2021-08-21 11:45:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5214 states have (on average 2.6952435749904105) internal successors, (14053), 5215 states have internal predecessors, (14053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 14053 transitions. [2021-08-21 11:45:53,958 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 14053 transitions. Word has length 114 [2021-08-21 11:45:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:53,958 INFO L470 AbstractCegarLoop]: Abstraction has 5216 states and 14053 transitions. [2021-08-21 11:45:53,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 14053 transitions. [2021-08-21 11:45:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:53,965 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:53,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:53,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-21 11:45:53,965 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:53,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:53,966 INFO L82 PathProgramCache]: Analyzing trace with hash 186379998, now seen corresponding path program 36 times [2021-08-21 11:45:53,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:53,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531154295] [2021-08-21 11:45:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:53,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:54,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:54,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531154295] [2021-08-21 11:45:54,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531154295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:54,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:54,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:54,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364852684] [2021-08-21 11:45:54,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:54,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:54,413 INFO L87 Difference]: Start difference. First operand 5216 states and 14053 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:55,912 INFO L93 Difference]: Finished difference Result 16391 states and 43149 transitions. [2021-08-21 11:45:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:55,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:55,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:55,940 INFO L225 Difference]: With dead ends: 16391 [2021-08-21 11:45:55,940 INFO L226 Difference]: Without dead ends: 16391 [2021-08-21 11:45:55,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1271.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:55,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16391 states. [2021-08-21 11:45:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16391 to 5200. [2021-08-21 11:45:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 2.6946902654867255) internal successors, (14007), 5199 states have internal predecessors, (14007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 14007 transitions. [2021-08-21 11:45:56,096 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 14007 transitions. Word has length 114 [2021-08-21 11:45:56,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:56,097 INFO L470 AbstractCegarLoop]: Abstraction has 5200 states and 14007 transitions. [2021-08-21 11:45:56,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:56,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 14007 transitions. [2021-08-21 11:45:56,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:56,103 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:56,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:56,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-21 11:45:56,104 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:56,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:56,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1023961598, now seen corresponding path program 37 times [2021-08-21 11:45:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:56,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319752006] [2021-08-21 11:45:56,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:56,105 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:56,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:56,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319752006] [2021-08-21 11:45:56,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319752006] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:56,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:56,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:56,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157044416] [2021-08-21 11:45:56,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:56,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:56,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:56,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:56,585 INFO L87 Difference]: Start difference. First operand 5200 states and 14007 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:58,049 INFO L93 Difference]: Finished difference Result 15757 states and 41634 transitions. [2021-08-21 11:45:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:45:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:45:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:58,077 INFO L225 Difference]: With dead ends: 15757 [2021-08-21 11:45:58,077 INFO L226 Difference]: Without dead ends: 15757 [2021-08-21 11:45:58,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1263.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:45:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15757 states. [2021-08-21 11:45:58,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15757 to 5216. [2021-08-21 11:45:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5214 states have (on average 2.6952435749904105) internal successors, (14053), 5215 states have internal predecessors, (14053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 14053 transitions. [2021-08-21 11:45:58,257 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 14053 transitions. Word has length 114 [2021-08-21 11:45:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:58,257 INFO L470 AbstractCegarLoop]: Abstraction has 5216 states and 14053 transitions. [2021-08-21 11:45:58,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:58,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 14053 transitions. [2021-08-21 11:45:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:45:58,265 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:58,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:58,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-21 11:45:58,266 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:45:58,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:58,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1955980226, now seen corresponding path program 38 times [2021-08-21 11:45:58,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:58,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621561364] [2021-08-21 11:45:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:58,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:58,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:58,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621561364] [2021-08-21 11:45:58,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621561364] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:58,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:58,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:45:58,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248835358] [2021-08-21 11:45:58,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:45:58,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:58,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:45:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:45:58,683 INFO L87 Difference]: Start difference. First operand 5216 states and 14053 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:00,129 INFO L93 Difference]: Finished difference Result 12982 states and 34472 transitions. [2021-08-21 11:46:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:00,153 INFO L225 Difference]: With dead ends: 12982 [2021-08-21 11:46:00,153 INFO L226 Difference]: Without dead ends: 12982 [2021-08-21 11:46:00,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1244.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:00,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2021-08-21 11:46:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 5172. [2021-08-21 11:46:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5172 states, 5170 states have (on average 2.6922630560928433) internal successors, (13919), 5171 states have internal predecessors, (13919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5172 states to 5172 states and 13919 transitions. [2021-08-21 11:46:00,293 INFO L78 Accepts]: Start accepts. Automaton has 5172 states and 13919 transitions. Word has length 114 [2021-08-21 11:46:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:00,293 INFO L470 AbstractCegarLoop]: Abstraction has 5172 states and 13919 transitions. [2021-08-21 11:46:00,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 13919 transitions. [2021-08-21 11:46:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:00,301 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:00,301 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:00,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-21 11:46:00,301 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:00,302 INFO L82 PathProgramCache]: Analyzing trace with hash -816612636, now seen corresponding path program 39 times [2021-08-21 11:46:00,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:00,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222898221] [2021-08-21 11:46:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:00,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:00,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:00,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222898221] [2021-08-21 11:46:00,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222898221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:00,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:00,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:00,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766884868] [2021-08-21 11:46:00,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:00,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:00,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:00,794 INFO L87 Difference]: Start difference. First operand 5172 states and 13919 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:02,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:02,230 INFO L93 Difference]: Finished difference Result 11588 states and 30991 transitions. [2021-08-21 11:46:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:02,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:02,249 INFO L225 Difference]: With dead ends: 11588 [2021-08-21 11:46:02,249 INFO L226 Difference]: Without dead ends: 11588 [2021-08-21 11:46:02,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1310.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11588 states. [2021-08-21 11:46:02,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11588 to 5232. [2021-08-21 11:46:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5230 states have (on average 2.6946462715105164) internal successors, (14093), 5231 states have internal predecessors, (14093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 14093 transitions. [2021-08-21 11:46:02,363 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 14093 transitions. Word has length 114 [2021-08-21 11:46:02,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:02,363 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 14093 transitions. [2021-08-21 11:46:02,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 14093 transitions. [2021-08-21 11:46:02,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:02,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:02,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:02,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-21 11:46:02,369 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:02,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -2055732734, now seen corresponding path program 40 times [2021-08-21 11:46:02,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:02,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719418932] [2021-08-21 11:46:02,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:02,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:02,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:02,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719418932] [2021-08-21 11:46:02,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719418932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:02,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:02,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:02,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911608266] [2021-08-21 11:46:02,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:02,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:02,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:02,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:02,793 INFO L87 Difference]: Start difference. First operand 5232 states and 14093 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:04,186 INFO L93 Difference]: Finished difference Result 12361 states and 32723 transitions. [2021-08-21 11:46:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:04,207 INFO L225 Difference]: With dead ends: 12361 [2021-08-21 11:46:04,207 INFO L226 Difference]: Without dead ends: 12361 [2021-08-21 11:46:04,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1234.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12361 states. [2021-08-21 11:46:04,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12361 to 5216. [2021-08-21 11:46:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5216 states, 5214 states have (on average 2.6940928270042193) internal successors, (14047), 5215 states have internal predecessors, (14047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:04,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 14047 transitions. [2021-08-21 11:46:04,327 INFO L78 Accepts]: Start accepts. Automaton has 5216 states and 14047 transitions. Word has length 114 [2021-08-21 11:46:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:04,328 INFO L470 AbstractCegarLoop]: Abstraction has 5216 states and 14047 transitions. [2021-08-21 11:46:04,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5216 states and 14047 transitions. [2021-08-21 11:46:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:04,334 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:04,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:04,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-21 11:46:04,334 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1028892966, now seen corresponding path program 41 times [2021-08-21 11:46:04,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:04,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951442306] [2021-08-21 11:46:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:04,335 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:04,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:04,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951442306] [2021-08-21 11:46:04,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951442306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:04,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:04,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:04,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414705820] [2021-08-21 11:46:04,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:04,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:04,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:04,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:04,791 INFO L87 Difference]: Start difference. First operand 5216 states and 14047 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:06,260 INFO L93 Difference]: Finished difference Result 15304 states and 40341 transitions. [2021-08-21 11:46:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:06,286 INFO L225 Difference]: With dead ends: 15304 [2021-08-21 11:46:06,286 INFO L226 Difference]: Without dead ends: 15304 [2021-08-21 11:46:06,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1269.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:06,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15304 states. [2021-08-21 11:46:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15304 to 5232. [2021-08-21 11:46:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 5230 states have (on average 2.6946462715105164) internal successors, (14093), 5231 states have internal predecessors, (14093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 14093 transitions. [2021-08-21 11:46:06,425 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 14093 transitions. Word has length 114 [2021-08-21 11:46:06,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:06,425 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 14093 transitions. [2021-08-21 11:46:06,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:06,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 14093 transitions. [2021-08-21 11:46:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:06,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:06,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:06,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-21 11:46:06,432 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:06,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash 96874338, now seen corresponding path program 42 times [2021-08-21 11:46:06,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:06,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315930045] [2021-08-21 11:46:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:06,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:06,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:06,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315930045] [2021-08-21 11:46:06,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315930045] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:06,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:06,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:06,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666059792] [2021-08-21 11:46:06,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:06,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:06,847 INFO L87 Difference]: Start difference. First operand 5232 states and 14093 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:08,252 INFO L93 Difference]: Finished difference Result 12529 states and 33179 transitions. [2021-08-21 11:46:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:08,253 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:08,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:08,282 INFO L225 Difference]: With dead ends: 12529 [2021-08-21 11:46:08,283 INFO L226 Difference]: Without dead ends: 12529 [2021-08-21 11:46:08,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1241.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12529 states. [2021-08-21 11:46:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12529 to 5200. [2021-08-21 11:46:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 5198 states have (on average 2.6935359753751444) internal successors, (14001), 5199 states have internal predecessors, (14001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 14001 transitions. [2021-08-21 11:46:08,419 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 14001 transitions. Word has length 114 [2021-08-21 11:46:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:08,419 INFO L470 AbstractCegarLoop]: Abstraction has 5200 states and 14001 transitions. [2021-08-21 11:46:08,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,419 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 14001 transitions. [2021-08-21 11:46:08,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:08,426 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:08,426 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:08,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-21 11:46:08,426 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:08,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:08,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1161650720, now seen corresponding path program 43 times [2021-08-21 11:46:08,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:08,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865659383] [2021-08-21 11:46:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:08,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:08,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:08,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865659383] [2021-08-21 11:46:08,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865659383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:08,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:08,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:08,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110364425] [2021-08-21 11:46:08,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:08,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:08,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:08,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:08,876 INFO L87 Difference]: Start difference. First operand 5200 states and 14001 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:10,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:10,270 INFO L93 Difference]: Finished difference Result 11711 states and 31162 transitions. [2021-08-21 11:46:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:10,270 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:10,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:10,289 INFO L225 Difference]: With dead ends: 11711 [2021-08-21 11:46:10,289 INFO L226 Difference]: Without dead ends: 11711 [2021-08-21 11:46:10,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1222.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:10,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11711 states. [2021-08-21 11:46:10,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11711 to 5244. [2021-08-21 11:46:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5244 states, 5242 states have (on average 2.695345288057993) internal successors, (14129), 5243 states have internal predecessors, (14129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 14129 transitions. [2021-08-21 11:46:10,407 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 14129 transitions. Word has length 114 [2021-08-21 11:46:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:10,408 INFO L470 AbstractCegarLoop]: Abstraction has 5244 states and 14129 transitions. [2021-08-21 11:46:10,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 14129 transitions. [2021-08-21 11:46:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:10,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:10,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:10,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-21 11:46:10,414 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:10,415 INFO L82 PathProgramCache]: Analyzing trace with hash 229632092, now seen corresponding path program 44 times [2021-08-21 11:46:10,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:10,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195975446] [2021-08-21 11:46:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:10,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:10,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:10,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195975446] [2021-08-21 11:46:10,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195975446] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:10,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:10,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:10,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471619640] [2021-08-21 11:46:10,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:10,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:10,850 INFO L87 Difference]: Start difference. First operand 5244 states and 14129 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:12,276 INFO L93 Difference]: Finished difference Result 11611 states and 30880 transitions. [2021-08-21 11:46:12,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:12,276 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:12,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:12,292 INFO L225 Difference]: With dead ends: 11611 [2021-08-21 11:46:12,292 INFO L226 Difference]: Without dead ends: 11611 [2021-08-21 11:46:12,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1260.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:12,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11611 states. [2021-08-21 11:46:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11611 to 5228. [2021-08-21 11:46:12,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5226 states have (on average 2.694795254496747) internal successors, (14083), 5227 states have internal predecessors, (14083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 14083 transitions. [2021-08-21 11:46:12,390 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 14083 transitions. Word has length 114 [2021-08-21 11:46:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:12,390 INFO L470 AbstractCegarLoop]: Abstraction has 5228 states and 14083 transitions. [2021-08-21 11:46:12,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 14083 transitions. [2021-08-21 11:46:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:12,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:12,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:12,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-21 11:46:12,396 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:12,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:12,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1032896708, now seen corresponding path program 45 times [2021-08-21 11:46:12,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:12,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747795893] [2021-08-21 11:46:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:12,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:12,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:12,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747795893] [2021-08-21 11:46:12,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747795893] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:12,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:12,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:12,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350147189] [2021-08-21 11:46:12,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:12,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:12,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:12,859 INFO L87 Difference]: Start difference. First operand 5228 states and 14083 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:14,260 INFO L93 Difference]: Finished difference Result 9154 states and 24546 transitions. [2021-08-21 11:46:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:14,274 INFO L225 Difference]: With dead ends: 9154 [2021-08-21 11:46:14,274 INFO L226 Difference]: Without dead ends: 9154 [2021-08-21 11:46:14,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1257.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:14,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9154 states. [2021-08-21 11:46:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9154 to 5396. [2021-08-21 11:46:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5394 states have (on average 2.7020763811642565) internal successors, (14575), 5395 states have internal predecessors, (14575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 14575 transitions. [2021-08-21 11:46:14,369 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 14575 transitions. Word has length 114 [2021-08-21 11:46:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:14,369 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 14575 transitions. [2021-08-21 11:46:14,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:14,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 14575 transitions. [2021-08-21 11:46:14,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:14,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:14,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:14,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-21 11:46:14,378 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:14,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:14,378 INFO L82 PathProgramCache]: Analyzing trace with hash -12304838, now seen corresponding path program 46 times [2021-08-21 11:46:14,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:14,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020991405] [2021-08-21 11:46:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:14,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:14,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:14,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020991405] [2021-08-21 11:46:14,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020991405] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:14,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:14,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:46:14,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834247373] [2021-08-21 11:46:14,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:46:14,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:14,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:46:14,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:46:14,827 INFO L87 Difference]: Start difference. First operand 5396 states and 14575 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:15,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:15,969 INFO L93 Difference]: Finished difference Result 6557 states and 17062 transitions. [2021-08-21 11:46:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:46:15,969 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:15,980 INFO L225 Difference]: With dead ends: 6557 [2021-08-21 11:46:15,980 INFO L226 Difference]: Without dead ends: 6557 [2021-08-21 11:46:15,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 950.2ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:46:15,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6557 states. [2021-08-21 11:46:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6557 to 5416. [2021-08-21 11:46:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5414 states have (on average 2.702807536017732) internal successors, (14633), 5415 states have internal predecessors, (14633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 14633 transitions. [2021-08-21 11:46:16,061 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 14633 transitions. Word has length 114 [2021-08-21 11:46:16,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:16,062 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 14633 transitions. [2021-08-21 11:46:16,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 14633 transitions. [2021-08-21 11:46:16,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:16,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:16,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:16,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-21 11:46:16,069 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:16,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:16,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1675952642, now seen corresponding path program 47 times [2021-08-21 11:46:16,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:16,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517454850] [2021-08-21 11:46:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:16,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:16,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:16,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517454850] [2021-08-21 11:46:16,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517454850] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:16,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:16,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:16,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925051008] [2021-08-21 11:46:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:16,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:16,495 INFO L87 Difference]: Start difference. First operand 5416 states and 14633 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:17,954 INFO L93 Difference]: Finished difference Result 16082 states and 42952 transitions. [2021-08-21 11:46:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:17,981 INFO L225 Difference]: With dead ends: 16082 [2021-08-21 11:46:17,981 INFO L226 Difference]: Without dead ends: 16082 [2021-08-21 11:46:17,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1195.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:18,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2021-08-21 11:46:18,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 5486. [2021-08-21 11:46:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:18,129 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:18,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:18,129 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:18,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:18,135 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:18,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:18,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-21 11:46:18,136 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:18,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1547995166, now seen corresponding path program 48 times [2021-08-21 11:46:18,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:18,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251208180] [2021-08-21 11:46:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:18,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:18,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:18,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251208180] [2021-08-21 11:46:18,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251208180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:18,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:18,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:18,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581570630] [2021-08-21 11:46:18,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:18,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:18,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:18,537 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:20,027 INFO L93 Difference]: Finished difference Result 18456 states and 49180 transitions. [2021-08-21 11:46:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:20,027 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:20,056 INFO L225 Difference]: With dead ends: 18456 [2021-08-21 11:46:20,057 INFO L226 Difference]: Without dead ends: 18456 [2021-08-21 11:46:20,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1234.0ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18456 states. [2021-08-21 11:46:20,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18456 to 5500. [2021-08-21 11:46:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:46:20,208 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:46:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:20,209 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:46:20,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:46:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:20,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:20,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:20,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-21 11:46:20,215 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1507852032, now seen corresponding path program 49 times [2021-08-21 11:46:20,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:20,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643741769] [2021-08-21 11:46:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:20,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:20,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:20,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643741769] [2021-08-21 11:46:20,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643741769] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:20,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:20,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:20,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696967474] [2021-08-21 11:46:20,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:20,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:20,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:20,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:20,624 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:22,073 INFO L93 Difference]: Finished difference Result 16855 states and 44747 transitions. [2021-08-21 11:46:22,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:22,102 INFO L225 Difference]: With dead ends: 16855 [2021-08-21 11:46:22,102 INFO L226 Difference]: Without dead ends: 16855 [2021-08-21 11:46:22,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1209.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16855 states. [2021-08-21 11:46:22,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16855 to 5458. [2021-08-21 11:46:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5456 states have (on average 2.7045454545454546) internal successors, (14756), 5457 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 14756 transitions. [2021-08-21 11:46:22,259 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 14756 transitions. Word has length 114 [2021-08-21 11:46:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:22,259 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 14756 transitions. [2021-08-21 11:46:22,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 14756 transitions. [2021-08-21 11:46:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:22,266 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:22,266 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:22,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-21 11:46:22,266 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:22,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 587479456, now seen corresponding path program 50 times [2021-08-21 11:46:22,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:22,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537613127] [2021-08-21 11:46:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:22,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:22,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:22,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537613127] [2021-08-21 11:46:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537613127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:22,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:22,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:22,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580834877] [2021-08-21 11:46:22,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:22,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:22,659 INFO L87 Difference]: Start difference. First operand 5458 states and 14756 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:24,083 INFO L93 Difference]: Finished difference Result 16184 states and 43120 transitions. [2021-08-21 11:46:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:24,083 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:24,110 INFO L225 Difference]: With dead ends: 16184 [2021-08-21 11:46:24,110 INFO L226 Difference]: Without dead ends: 16184 [2021-08-21 11:46:24,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1200.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:24,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16184 states. [2021-08-21 11:46:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16184 to 5486. [2021-08-21 11:46:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:24,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:24,264 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:24,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:24,264 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:24,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:24,264 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:24,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:24,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:24,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-21 11:46:24,271 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash -651640642, now seen corresponding path program 51 times [2021-08-21 11:46:24,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:24,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509779833] [2021-08-21 11:46:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:24,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:24,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:24,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509779833] [2021-08-21 11:46:24,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509779833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:24,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:24,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:24,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505539296] [2021-08-21 11:46:24,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:24,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:24,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:24,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:24,670 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:26,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:26,144 INFO L93 Difference]: Finished difference Result 16896 states and 44755 transitions. [2021-08-21 11:46:26,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:26,145 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:26,171 INFO L225 Difference]: With dead ends: 16896 [2021-08-21 11:46:26,172 INFO L226 Difference]: Without dead ends: 16896 [2021-08-21 11:46:26,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1217.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16896 states. [2021-08-21 11:46:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16896 to 5472. [2021-08-21 11:46:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5470 states have (on average 2.7051188299817186) internal successors, (14797), 5471 states have internal predecessors, (14797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 14797 transitions. [2021-08-21 11:46:26,387 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 14797 transitions. Word has length 114 [2021-08-21 11:46:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:26,387 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 14797 transitions. [2021-08-21 11:46:26,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 14797 transitions. [2021-08-21 11:46:26,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:26,393 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:26,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:26,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-21 11:46:26,394 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:26,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:26,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1861982238, now seen corresponding path program 52 times [2021-08-21 11:46:26,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:26,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110317329] [2021-08-21 11:46:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:26,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:26,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:26,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110317329] [2021-08-21 11:46:26,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110317329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:26,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:26,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:26,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136540135] [2021-08-21 11:46:26,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:26,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:26,834 INFO L87 Difference]: Start difference. First operand 5472 states and 14797 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:28,319 INFO L93 Difference]: Finished difference Result 16321 states and 43344 transitions. [2021-08-21 11:46:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:28,346 INFO L225 Difference]: With dead ends: 16321 [2021-08-21 11:46:28,347 INFO L226 Difference]: Without dead ends: 16321 [2021-08-21 11:46:28,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1234.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16321 states. [2021-08-21 11:46:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16321 to 5486. [2021-08-21 11:46:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:28,507 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:28,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:28,507 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:28,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:28,514 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:28,514 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:28,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-21 11:46:28,514 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:28,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:28,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1500966430, now seen corresponding path program 53 times [2021-08-21 11:46:28,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:28,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329707421] [2021-08-21 11:46:28,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:28,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:28,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:28,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329707421] [2021-08-21 11:46:28,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329707421] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:28,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:28,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:28,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376725809] [2021-08-21 11:46:28,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:28,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:28,948 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:30,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:30,397 INFO L93 Difference]: Finished difference Result 13924 states and 37114 transitions. [2021-08-21 11:46:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:30,422 INFO L225 Difference]: With dead ends: 13924 [2021-08-21 11:46:30,423 INFO L226 Difference]: Without dead ends: 13924 [2021-08-21 11:46:30,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1248.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13924 states. [2021-08-21 11:46:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13924 to 5430. [2021-08-21 11:46:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5428 states have (on average 2.7033898305084745) internal successors, (14674), 5429 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:30,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 14674 transitions. [2021-08-21 11:46:30,543 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 14674 transitions. Word has length 114 [2021-08-21 11:46:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:30,543 INFO L470 AbstractCegarLoop]: Abstraction has 5430 states and 14674 transitions. [2021-08-21 11:46:30,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 14674 transitions. [2021-08-21 11:46:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:30,550 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:30,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:30,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-21 11:46:30,551 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash 129262338, now seen corresponding path program 54 times [2021-08-21 11:46:30,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:30,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874341076] [2021-08-21 11:46:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:30,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:30,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:30,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874341076] [2021-08-21 11:46:30,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874341076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:30,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:30,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:30,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892683696] [2021-08-21 11:46:30,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:30,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:30,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:30,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:30,957 INFO L87 Difference]: Start difference. First operand 5430 states and 14674 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:32,411 INFO L93 Difference]: Finished difference Result 14328 states and 38507 transitions. [2021-08-21 11:46:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:32,434 INFO L225 Difference]: With dead ends: 14328 [2021-08-21 11:46:32,434 INFO L226 Difference]: Without dead ends: 14328 [2021-08-21 11:46:32,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1210.9ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:32,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14328 states. [2021-08-21 11:46:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14328 to 5472. [2021-08-21 11:46:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5470 states have (on average 2.7051188299817186) internal successors, (14797), 5471 states have internal predecessors, (14797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 14797 transitions. [2021-08-21 11:46:32,569 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 14797 transitions. Word has length 114 [2021-08-21 11:46:32,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:32,569 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 14797 transitions. [2021-08-21 11:46:32,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 14797 transitions. [2021-08-21 11:46:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:32,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:32,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:32,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-21 11:46:32,576 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:32,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1200281826, now seen corresponding path program 55 times [2021-08-21 11:46:32,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:32,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017810115] [2021-08-21 11:46:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:32,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:32,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:32,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017810115] [2021-08-21 11:46:32,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017810115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:32,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:32,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:32,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640943256] [2021-08-21 11:46:32,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:32,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:32,986 INFO L87 Difference]: Start difference. First operand 5472 states and 14797 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:34,508 INFO L93 Difference]: Finished difference Result 14412 states and 38669 transitions. [2021-08-21 11:46:34,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:34,508 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:34,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:34,532 INFO L225 Difference]: With dead ends: 14412 [2021-08-21 11:46:34,532 INFO L226 Difference]: Without dead ends: 14412 [2021-08-21 11:46:34,533 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1227.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14412 states. [2021-08-21 11:46:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14412 to 5486. [2021-08-21 11:46:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:34,666 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:34,667 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:34,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:34,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:34,673 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:34,673 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:34,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-21 11:46:34,674 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:34,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:34,674 INFO L82 PathProgramCache]: Analyzing trace with hash -38838272, now seen corresponding path program 56 times [2021-08-21 11:46:34,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:34,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748028422] [2021-08-21 11:46:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:34,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:35,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:35,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748028422] [2021-08-21 11:46:35,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748028422] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:35,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:35,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:35,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827245310] [2021-08-21 11:46:35,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:35,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:35,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:35,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:35,086 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:36,550 INFO L93 Difference]: Finished difference Result 13854 states and 36839 transitions. [2021-08-21 11:46:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:36,573 INFO L225 Difference]: With dead ends: 13854 [2021-08-21 11:46:36,573 INFO L226 Difference]: Without dead ends: 13854 [2021-08-21 11:46:36,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1212.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13854 states. [2021-08-21 11:46:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13854 to 5444. [2021-08-21 11:46:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5442 states have (on average 2.7039691289966923) internal successors, (14715), 5443 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 14715 transitions. [2021-08-21 11:46:36,725 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 14715 transitions. Word has length 114 [2021-08-21 11:46:36,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:36,725 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 14715 transitions. [2021-08-21 11:46:36,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 14715 transitions. [2021-08-21 11:46:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:36,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:36,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:36,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-21 11:46:36,732 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:36,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:36,732 INFO L82 PathProgramCache]: Analyzing trace with hash -126219548, now seen corresponding path program 57 times [2021-08-21 11:46:36,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:36,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859145811] [2021-08-21 11:46:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:36,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:37,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:37,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859145811] [2021-08-21 11:46:37,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859145811] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:37,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:37,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:37,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849766616] [2021-08-21 11:46:37,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:37,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:37,132 INFO L87 Difference]: Start difference. First operand 5444 states and 14715 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:38,546 INFO L93 Difference]: Finished difference Result 10656 states and 28515 transitions. [2021-08-21 11:46:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:38,564 INFO L225 Difference]: With dead ends: 10656 [2021-08-21 11:46:38,564 INFO L226 Difference]: Without dead ends: 10656 [2021-08-21 11:46:38,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1195.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10656 states. [2021-08-21 11:46:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10656 to 5416. [2021-08-21 11:46:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5414 states have (on average 2.702807536017732) internal successors, (14633), 5415 states have internal predecessors, (14633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 14633 transitions. [2021-08-21 11:46:38,681 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 14633 transitions. Word has length 114 [2021-08-21 11:46:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:38,681 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 14633 transitions. [2021-08-21 11:46:38,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 14633 transitions. [2021-08-21 11:46:38,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:38,688 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:38,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:38,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-21 11:46:38,688 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:38,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:38,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1722499780, now seen corresponding path program 58 times [2021-08-21 11:46:38,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:38,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153615673] [2021-08-21 11:46:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:38,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:39,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:39,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153615673] [2021-08-21 11:46:39,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153615673] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:39,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:39,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101704704] [2021-08-21 11:46:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:39,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:39,138 INFO L87 Difference]: Start difference. First operand 5416 states and 14633 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:40,580 INFO L93 Difference]: Finished difference Result 14379 states and 38183 transitions. [2021-08-21 11:46:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:40,603 INFO L225 Difference]: With dead ends: 14379 [2021-08-21 11:46:40,603 INFO L226 Difference]: Without dead ends: 14379 [2021-08-21 11:46:40,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1224.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14379 states. [2021-08-21 11:46:40,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14379 to 5500. [2021-08-21 11:46:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:46:40,735 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:46:40,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:40,735 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:46:40,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:46:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:40,742 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:40,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:40,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-21 11:46:40,742 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:40,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1501448028, now seen corresponding path program 59 times [2021-08-21 11:46:40,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:40,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912971600] [2021-08-21 11:46:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:40,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:41,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:41,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912971600] [2021-08-21 11:46:41,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912971600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:41,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:41,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:41,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720958155] [2021-08-21 11:46:41,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:41,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:41,168 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:42,662 INFO L93 Difference]: Finished difference Result 16753 states and 44411 transitions. [2021-08-21 11:46:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:42,692 INFO L225 Difference]: With dead ends: 16753 [2021-08-21 11:46:42,692 INFO L226 Difference]: Without dead ends: 16753 [2021-08-21 11:46:42,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1253.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:42,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16753 states. [2021-08-21 11:46:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16753 to 5514. [2021-08-21 11:46:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5512 states have (on average 2.706821480406386) internal successors, (14920), 5513 states have internal predecessors, (14920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 14920 transitions. [2021-08-21 11:46:42,851 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 14920 transitions. Word has length 114 [2021-08-21 11:46:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:42,851 INFO L470 AbstractCegarLoop]: Abstraction has 5514 states and 14920 transitions. [2021-08-21 11:46:42,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 14920 transitions. [2021-08-21 11:46:42,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:42,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:42,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:42,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-21 11:46:42,859 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:42,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:42,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1554399170, now seen corresponding path program 60 times [2021-08-21 11:46:42,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:42,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131233562] [2021-08-21 11:46:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:42,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:43,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:43,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131233562] [2021-08-21 11:46:43,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131233562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:43,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:43,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:43,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495694904] [2021-08-21 11:46:43,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:43,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:43,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:43,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:43,284 INFO L87 Difference]: Start difference. First operand 5514 states and 14920 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:44,741 INFO L93 Difference]: Finished difference Result 15152 states and 39978 transitions. [2021-08-21 11:46:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:44,765 INFO L225 Difference]: With dead ends: 15152 [2021-08-21 11:46:44,766 INFO L226 Difference]: Without dead ends: 15152 [2021-08-21 11:46:44,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1263.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:44,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15152 states. [2021-08-21 11:46:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15152 to 5472. [2021-08-21 11:46:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5470 states have (on average 2.7051188299817186) internal successors, (14797), 5471 states have internal predecessors, (14797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 14797 transitions. [2021-08-21 11:46:44,906 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 14797 transitions. Word has length 114 [2021-08-21 11:46:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:44,906 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 14797 transitions. [2021-08-21 11:46:44,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 14797 transitions. [2021-08-21 11:46:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:44,913 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:44,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:44,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-21 11:46:44,913 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash 634026594, now seen corresponding path program 61 times [2021-08-21 11:46:44,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:44,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408437548] [2021-08-21 11:46:44,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:44,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:45,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:45,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408437548] [2021-08-21 11:46:45,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408437548] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:45,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:45,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:45,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959672994] [2021-08-21 11:46:45,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:45,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:45,353 INFO L87 Difference]: Start difference. First operand 5472 states and 14797 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:46,800 INFO L93 Difference]: Finished difference Result 14481 states and 38351 transitions. [2021-08-21 11:46:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:46,800 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:46,822 INFO L225 Difference]: With dead ends: 14481 [2021-08-21 11:46:46,822 INFO L226 Difference]: Without dead ends: 14481 [2021-08-21 11:46:46,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1260.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14481 states. [2021-08-21 11:46:46,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14481 to 5500. [2021-08-21 11:46:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:46:46,970 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:46:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:46,970 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:46:46,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:46:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:46,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:46,977 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:46,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-21 11:46:46,977 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:46,977 INFO L82 PathProgramCache]: Analyzing trace with hash -605093504, now seen corresponding path program 62 times [2021-08-21 11:46:46,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:46,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667573672] [2021-08-21 11:46:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:46,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:47,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:47,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667573672] [2021-08-21 11:46:47,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667573672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:47,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:47,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:47,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473168382] [2021-08-21 11:46:47,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:47,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:47,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:47,378 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:48,804 INFO L93 Difference]: Finished difference Result 15193 states and 39986 transitions. [2021-08-21 11:46:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:48,830 INFO L225 Difference]: With dead ends: 15193 [2021-08-21 11:46:48,830 INFO L226 Difference]: Without dead ends: 15193 [2021-08-21 11:46:48,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1225.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15193 states. [2021-08-21 11:46:48,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15193 to 5486. [2021-08-21 11:46:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:48,972 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:48,972 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:48,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:48,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:48,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:48,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-21 11:46:48,979 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:48,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1815435100, now seen corresponding path program 63 times [2021-08-21 11:46:48,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:48,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444324298] [2021-08-21 11:46:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:48,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:49,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:49,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444324298] [2021-08-21 11:46:49,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444324298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:49,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:49,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:49,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542479409] [2021-08-21 11:46:49,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:49,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:49,467 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:50,981 INFO L93 Difference]: Finished difference Result 14618 states and 38575 transitions. [2021-08-21 11:46:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:50,981 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:50,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:51,004 INFO L225 Difference]: With dead ends: 14618 [2021-08-21 11:46:51,005 INFO L226 Difference]: Without dead ends: 14618 [2021-08-21 11:46:51,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1346.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14618 states. [2021-08-21 11:46:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14618 to 5500. [2021-08-21 11:46:51,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:46:51,130 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:46:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:51,130 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:46:51,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:46:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:51,137 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:51,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:51,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-21 11:46:51,137 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:51,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1547513568, now seen corresponding path program 64 times [2021-08-21 11:46:51,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:51,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653775679] [2021-08-21 11:46:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:51,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:51,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:51,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653775679] [2021-08-21 11:46:51,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653775679] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:51,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:51,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:51,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016854791] [2021-08-21 11:46:51,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:51,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:51,555 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:53,035 INFO L93 Difference]: Finished difference Result 12221 states and 32345 transitions. [2021-08-21 11:46:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:53,053 INFO L225 Difference]: With dead ends: 12221 [2021-08-21 11:46:53,053 INFO L226 Difference]: Without dead ends: 12221 [2021-08-21 11:46:53,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1270.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12221 states. [2021-08-21 11:46:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12221 to 5444. [2021-08-21 11:46:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5442 states have (on average 2.7039691289966923) internal successors, (14715), 5443 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 14715 transitions. [2021-08-21 11:46:53,164 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 14715 transitions. Word has length 114 [2021-08-21 11:46:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:53,164 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 14715 transitions. [2021-08-21 11:46:53,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 14715 transitions. [2021-08-21 11:46:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:53,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:53,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:53,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-21 11:46:53,170 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:53,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash 175809476, now seen corresponding path program 65 times [2021-08-21 11:46:53,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:53,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607915423] [2021-08-21 11:46:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:53,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:53,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:53,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607915423] [2021-08-21 11:46:53,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607915423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:53,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:53,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:53,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768474501] [2021-08-21 11:46:53,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:53,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:53,618 INFO L87 Difference]: Start difference. First operand 5444 states and 14715 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:55,297 INFO L93 Difference]: Finished difference Result 16931 states and 45048 transitions. [2021-08-21 11:46:55,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:55,324 INFO L225 Difference]: With dead ends: 16931 [2021-08-21 11:46:55,324 INFO L226 Difference]: Without dead ends: 16931 [2021-08-21 11:46:55,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1373.2ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16931 states. [2021-08-21 11:46:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16931 to 5486. [2021-08-21 11:46:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:46:55,471 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:46:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:55,471 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:46:55,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:46:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:55,478 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:55,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:55,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-21 11:46:55,478 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1246828964, now seen corresponding path program 66 times [2021-08-21 11:46:55,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:55,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864195474] [2021-08-21 11:46:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:55,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:55,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:55,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:55,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864195474] [2021-08-21 11:46:55,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864195474] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:55,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:55,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:55,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901207763] [2021-08-21 11:46:55,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:55,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:55,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:55,891 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:57,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:57,382 INFO L93 Difference]: Finished difference Result 17015 states and 45210 transitions. [2021-08-21 11:46:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:57,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:57,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:57,407 INFO L225 Difference]: With dead ends: 17015 [2021-08-21 11:46:57,408 INFO L226 Difference]: Without dead ends: 17015 [2021-08-21 11:46:57,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1214.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17015 states. [2021-08-21 11:46:57,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17015 to 5500. [2021-08-21 11:46:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:46:57,534 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:46:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:57,534 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:46:57,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:46:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:57,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:57,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:57,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-21 11:46:57,542 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:57,543 INFO L82 PathProgramCache]: Analyzing trace with hash 7708866, now seen corresponding path program 67 times [2021-08-21 11:46:57,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:57,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246278984] [2021-08-21 11:46:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:57,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:58,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:58,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246278984] [2021-08-21 11:46:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246278984] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:58,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:46:58,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988054392] [2021-08-21 11:46:58,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:46:58,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:46:58,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:46:58,017 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:59,480 INFO L93 Difference]: Finished difference Result 16457 states and 43380 transitions. [2021-08-21 11:46:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:46:59,480 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:46:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:59,508 INFO L225 Difference]: With dead ends: 16457 [2021-08-21 11:46:59,509 INFO L226 Difference]: Without dead ends: 16457 [2021-08-21 11:46:59,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:46:59,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16457 states. [2021-08-21 11:46:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16457 to 5458. [2021-08-21 11:46:59,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5456 states have (on average 2.7045454545454546) internal successors, (14756), 5457 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 14756 transitions. [2021-08-21 11:46:59,658 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 14756 transitions. Word has length 114 [2021-08-21 11:46:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:59,659 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 14756 transitions. [2021-08-21 11:46:59,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 14756 transitions. [2021-08-21 11:46:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:46:59,665 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:59,665 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:59,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-21 11:46:59,665 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:46:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:59,666 INFO L82 PathProgramCache]: Analyzing trace with hash -79672410, now seen corresponding path program 68 times [2021-08-21 11:46:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:59,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140614945] [2021-08-21 11:46:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:59,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:00,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:00,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140614945] [2021-08-21 11:47:00,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140614945] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:00,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:00,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:00,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731273156] [2021-08-21 11:47:00,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:00,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:00,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:00,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:00,201 INFO L87 Difference]: Start difference. First operand 5458 states and 14756 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:01,670 INFO L93 Difference]: Finished difference Result 13259 states and 35056 transitions. [2021-08-21 11:47:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:01,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:01,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:01,692 INFO L225 Difference]: With dead ends: 13259 [2021-08-21 11:47:01,692 INFO L226 Difference]: Without dead ends: 13259 [2021-08-21 11:47:01,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1251.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:01,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13259 states. [2021-08-21 11:47:01,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13259 to 5430. [2021-08-21 11:47:01,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5428 states have (on average 2.7033898305084745) internal successors, (14674), 5429 states have internal predecessors, (14674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:01,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 14674 transitions. [2021-08-21 11:47:01,804 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 14674 transitions. Word has length 114 [2021-08-21 11:47:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:01,804 INFO L470 AbstractCegarLoop]: Abstraction has 5430 states and 14674 transitions. [2021-08-21 11:47:01,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:01,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 14674 transitions. [2021-08-21 11:47:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:01,810 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:01,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:01,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-21 11:47:01,810 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:01,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash -418875036, now seen corresponding path program 69 times [2021-08-21 11:47:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:01,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373717843] [2021-08-21 11:47:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:01,813 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:02,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:02,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373717843] [2021-08-21 11:47:02,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373717843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:02,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:02,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367663557] [2021-08-21 11:47:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:02,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:02,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:02,234 INFO L87 Difference]: Start difference. First operand 5430 states and 14674 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:03,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:03,690 INFO L93 Difference]: Finished difference Result 12611 states and 33697 transitions. [2021-08-21 11:47:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:03,691 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:03,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:03,711 INFO L225 Difference]: With dead ends: 12611 [2021-08-21 11:47:03,711 INFO L226 Difference]: Without dead ends: 12611 [2021-08-21 11:47:03,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1242.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12611 states. [2021-08-21 11:47:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12611 to 5486. [2021-08-21 11:47:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5484 states have (on average 2.7056892778993435) internal successors, (14838), 5485 states have internal predecessors, (14838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 14838 transitions. [2021-08-21 11:47:03,834 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 14838 transitions. Word has length 114 [2021-08-21 11:47:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:03,834 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 14838 transitions. [2021-08-21 11:47:03,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 14838 transitions. [2021-08-21 11:47:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:03,842 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:03,842 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:03,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-21 11:47:03,842 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 652144452, now seen corresponding path program 70 times [2021-08-21 11:47:03,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:03,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419744695] [2021-08-21 11:47:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:03,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:04,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:04,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419744695] [2021-08-21 11:47:04,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419744695] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:04,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:04,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:04,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076334577] [2021-08-21 11:47:04,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:04,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:04,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:04,304 INFO L87 Difference]: Start difference. First operand 5486 states and 14838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:05,790 INFO L93 Difference]: Finished difference Result 12695 states and 33859 transitions. [2021-08-21 11:47:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:05,811 INFO L225 Difference]: With dead ends: 12695 [2021-08-21 11:47:05,811 INFO L226 Difference]: Without dead ends: 12695 [2021-08-21 11:47:05,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1280.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:05,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12695 states. [2021-08-21 11:47:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12695 to 5500. [2021-08-21 11:47:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5500 states, 5498 states have (on average 2.706256820662059) internal successors, (14879), 5499 states have internal predecessors, (14879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5500 states to 5500 states and 14879 transitions. [2021-08-21 11:47:05,923 INFO L78 Accepts]: Start accepts. Automaton has 5500 states and 14879 transitions. Word has length 114 [2021-08-21 11:47:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:05,923 INFO L470 AbstractCegarLoop]: Abstraction has 5500 states and 14879 transitions. [2021-08-21 11:47:05,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5500 states and 14879 transitions. [2021-08-21 11:47:05,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:05,930 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:05,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:05,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-21 11:47:05,930 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:05,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:05,931 INFO L82 PathProgramCache]: Analyzing trace with hash -586975646, now seen corresponding path program 71 times [2021-08-21 11:47:05,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:05,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698801079] [2021-08-21 11:47:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:05,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:06,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:06,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698801079] [2021-08-21 11:47:06,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698801079] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:06,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:06,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:06,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515112086] [2021-08-21 11:47:06,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:06,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:06,342 INFO L87 Difference]: Start difference. First operand 5500 states and 14879 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:07,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:07,865 INFO L93 Difference]: Finished difference Result 12137 states and 32029 transitions. [2021-08-21 11:47:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:07,883 INFO L225 Difference]: With dead ends: 12137 [2021-08-21 11:47:07,883 INFO L226 Difference]: Without dead ends: 12137 [2021-08-21 11:47:07,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1237.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12137 states. [2021-08-21 11:47:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12137 to 5458. [2021-08-21 11:47:07,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5456 states have (on average 2.7045454545454546) internal successors, (14756), 5457 states have internal predecessors, (14756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:07,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 14756 transitions. [2021-08-21 11:47:07,997 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 14756 transitions. Word has length 114 [2021-08-21 11:47:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:07,997 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 14756 transitions. [2021-08-21 11:47:07,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 14756 transitions. [2021-08-21 11:47:08,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:08,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:08,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:08,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-21 11:47:08,004 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:08,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:08,005 INFO L82 PathProgramCache]: Analyzing trace with hash -674356922, now seen corresponding path program 72 times [2021-08-21 11:47:08,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:08,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051867258] [2021-08-21 11:47:08,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:08,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:08,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:08,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051867258] [2021-08-21 11:47:08,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051867258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:08,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:08,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:08,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229026733] [2021-08-21 11:47:08,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:08,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:08,425 INFO L87 Difference]: Start difference. First operand 5458 states and 14756 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:09,872 INFO L93 Difference]: Finished difference Result 12191 states and 32299 transitions. [2021-08-21 11:47:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:09,873 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:09,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:09,890 INFO L225 Difference]: With dead ends: 12191 [2021-08-21 11:47:09,891 INFO L226 Difference]: Without dead ends: 12191 [2021-08-21 11:47:09,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1195.0ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:09,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12191 states. [2021-08-21 11:47:09,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12191 to 5444. [2021-08-21 11:47:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5444 states, 5442 states have (on average 2.7039691289966923) internal successors, (14715), 5443 states have internal predecessors, (14715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 14715 transitions. [2021-08-21 11:47:10,001 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 14715 transitions. Word has length 114 [2021-08-21 11:47:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:10,001 INFO L470 AbstractCegarLoop]: Abstraction has 5444 states and 14715 transitions. [2021-08-21 11:47:10,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:10,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 14715 transitions. [2021-08-21 11:47:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:10,008 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:10,008 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:10,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-21 11:47:10,008 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:10,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:10,008 INFO L82 PathProgramCache]: Analyzing trace with hash -802224256, now seen corresponding path program 73 times [2021-08-21 11:47:10,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:10,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123160960] [2021-08-21 11:47:10,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:10,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:10,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:10,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123160960] [2021-08-21 11:47:10,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123160960] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:10,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:10,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:10,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799884562] [2021-08-21 11:47:10,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:10,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:10,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:10,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:10,438 INFO L87 Difference]: Start difference. First operand 5444 states and 14715 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:11,858 INFO L93 Difference]: Finished difference Result 8878 states and 23545 transitions. [2021-08-21 11:47:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:11,871 INFO L225 Difference]: With dead ends: 8878 [2021-08-21 11:47:11,871 INFO L226 Difference]: Without dead ends: 8878 [2021-08-21 11:47:11,872 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1220.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8878 states. [2021-08-21 11:47:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8878 to 5416. [2021-08-21 11:47:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5416 states, 5414 states have (on average 2.702807536017732) internal successors, (14633), 5415 states have internal predecessors, (14633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5416 states to 5416 states and 14633 transitions. [2021-08-21 11:47:11,960 INFO L78 Accepts]: Start accepts. Automaton has 5416 states and 14633 transitions. Word has length 114 [2021-08-21 11:47:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:11,960 INFO L470 AbstractCegarLoop]: Abstraction has 5416 states and 14633 transitions. [2021-08-21 11:47:11,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5416 states and 14633 transitions. [2021-08-21 11:47:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:11,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:11,967 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:11,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-21 11:47:11,967 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:11,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:11,967 INFO L82 PathProgramCache]: Analyzing trace with hash 930030338, now seen corresponding path program 74 times [2021-08-21 11:47:11,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:11,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987957815] [2021-08-21 11:47:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:11,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:12,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:12,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987957815] [2021-08-21 11:47:12,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987957815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:12,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:12,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:12,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966637274] [2021-08-21 11:47:12,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:12,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:12,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:12,359 INFO L87 Difference]: Start difference. First operand 5416 states and 14633 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:13,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:13,821 INFO L93 Difference]: Finished difference Result 17260 states and 46188 transitions. [2021-08-21 11:47:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:13,821 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:13,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:13,849 INFO L225 Difference]: With dead ends: 17260 [2021-08-21 11:47:13,849 INFO L226 Difference]: Without dead ends: 17260 [2021-08-21 11:47:13,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1243.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:13,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2021-08-21 11:47:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 5622. [2021-08-21 11:47:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 2.709252669039146) internal successors, (15226), 5621 states have internal predecessors, (15226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 15226 transitions. [2021-08-21 11:47:13,997 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 15226 transitions. Word has length 114 [2021-08-21 11:47:13,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:13,997 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 15226 transitions. [2021-08-21 11:47:13,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 15226 transitions. [2021-08-21 11:47:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:14,003 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:14,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:14,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-21 11:47:14,004 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:14,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:14,004 INFO L82 PathProgramCache]: Analyzing trace with hash 2001049826, now seen corresponding path program 75 times [2021-08-21 11:47:14,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:14,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325272853] [2021-08-21 11:47:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:14,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:14,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:14,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325272853] [2021-08-21 11:47:14,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325272853] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:14,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:14,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:14,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700381323] [2021-08-21 11:47:14,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:14,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:14,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:14,461 INFO L87 Difference]: Start difference. First operand 5622 states and 15226 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:16,002 INFO L93 Difference]: Finished difference Result 19688 states and 52545 transitions. [2021-08-21 11:47:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:16,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:16,034 INFO L225 Difference]: With dead ends: 19688 [2021-08-21 11:47:16,034 INFO L226 Difference]: Without dead ends: 19688 [2021-08-21 11:47:16,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1331.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19688 states. [2021-08-21 11:47:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 5638. [2021-08-21 11:47:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5636 states have (on average 2.7097232079488998) internal successors, (15272), 5637 states have internal predecessors, (15272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 15272 transitions. [2021-08-21 11:47:16,214 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 15272 transitions. Word has length 114 [2021-08-21 11:47:16,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:16,214 INFO L470 AbstractCegarLoop]: Abstraction has 5638 states and 15272 transitions. [2021-08-21 11:47:16,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 15272 transitions. [2021-08-21 11:47:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:16,221 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:16,221 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:16,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-21 11:47:16,221 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:16,222 INFO L82 PathProgramCache]: Analyzing trace with hash 761929728, now seen corresponding path program 76 times [2021-08-21 11:47:16,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:16,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36807734] [2021-08-21 11:47:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:16,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:16,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:16,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36807734] [2021-08-21 11:47:16,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36807734] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:16,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:16,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:16,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648808855] [2021-08-21 11:47:16,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:16,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:16,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:16,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:16,639 INFO L87 Difference]: Start difference. First operand 5638 states and 15272 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:18,191 INFO L93 Difference]: Finished difference Result 18088 states and 48065 transitions. [2021-08-21 11:47:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:18,191 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:18,217 INFO L225 Difference]: With dead ends: 18088 [2021-08-21 11:47:18,217 INFO L226 Difference]: Without dead ends: 18088 [2021-08-21 11:47:18,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1263.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18088 states. [2021-08-21 11:47:18,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18088 to 5610. [2021-08-21 11:47:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5610 states, 5608 states have (on average 2.705420827389444) internal successors, (15172), 5609 states have internal predecessors, (15172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5610 states to 5610 states and 15172 transitions. [2021-08-21 11:47:18,362 INFO L78 Accepts]: Start accepts. Automaton has 5610 states and 15172 transitions. Word has length 114 [2021-08-21 11:47:18,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:18,362 INFO L470 AbstractCegarLoop]: Abstraction has 5610 states and 15172 transitions. [2021-08-21 11:47:18,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5610 states and 15172 transitions. [2021-08-21 11:47:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:18,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:18,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:18,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-21 11:47:18,369 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash -158442848, now seen corresponding path program 77 times [2021-08-21 11:47:18,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:18,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351227404] [2021-08-21 11:47:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:18,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:18,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:18,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351227404] [2021-08-21 11:47:18,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351227404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:18,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:18,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:18,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233380180] [2021-08-21 11:47:18,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:18,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:18,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:18,764 INFO L87 Difference]: Start difference. First operand 5610 states and 15172 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:20,325 INFO L93 Difference]: Finished difference Result 20908 states and 55512 transitions. [2021-08-21 11:47:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:20,326 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:20,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:20,359 INFO L225 Difference]: With dead ends: 20908 [2021-08-21 11:47:20,359 INFO L226 Difference]: Without dead ends: 20908 [2021-08-21 11:47:20,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1286.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:20,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20908 states. [2021-08-21 11:47:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20908 to 5642. [2021-08-21 11:47:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 2.706382978723404) internal successors, (15264), 5641 states have internal predecessors, (15264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:20,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 15264 transitions. [2021-08-21 11:47:20,585 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 15264 transitions. Word has length 114 [2021-08-21 11:47:20,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:20,585 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 15264 transitions. [2021-08-21 11:47:20,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 15264 transitions. [2021-08-21 11:47:20,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:20,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:20,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:20,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-21 11:47:20,592 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:20,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1397562946, now seen corresponding path program 78 times [2021-08-21 11:47:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:20,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242997918] [2021-08-21 11:47:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:20,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:20,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:20,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242997918] [2021-08-21 11:47:20,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242997918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:20,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:20,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:20,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810480834] [2021-08-21 11:47:20,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:20,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:20,989 INFO L87 Difference]: Start difference. First operand 5642 states and 15264 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:22,439 INFO L93 Difference]: Finished difference Result 21681 states and 57244 transitions. [2021-08-21 11:47:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:22,474 INFO L225 Difference]: With dead ends: 21681 [2021-08-21 11:47:22,474 INFO L226 Difference]: Without dead ends: 21681 [2021-08-21 11:47:22,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1236.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21681 states. [2021-08-21 11:47:22,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21681 to 5626. [2021-08-21 11:47:22,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5624 states have (on average 2.7059032716927454) internal successors, (15218), 5625 states have internal predecessors, (15218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:22,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 15218 transitions. [2021-08-21 11:47:22,665 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 15218 transitions. Word has length 114 [2021-08-21 11:47:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:22,665 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 15218 transitions. [2021-08-21 11:47:22,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 15218 transitions. [2021-08-21 11:47:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:22,672 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:22,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:22,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-21 11:47:22,672 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:22,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1687062754, now seen corresponding path program 79 times [2021-08-21 11:47:22,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:22,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720685141] [2021-08-21 11:47:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:22,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:23,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:23,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720685141] [2021-08-21 11:47:23,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720685141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:23,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:23,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:23,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146643993] [2021-08-21 11:47:23,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:23,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:23,147 INFO L87 Difference]: Start difference. First operand 5626 states and 15218 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:24,630 INFO L93 Difference]: Finished difference Result 21047 states and 55729 transitions. [2021-08-21 11:47:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:24,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:24,666 INFO L225 Difference]: With dead ends: 21047 [2021-08-21 11:47:24,666 INFO L226 Difference]: Without dead ends: 21047 [2021-08-21 11:47:24,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1276.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2021-08-21 11:47:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 5642. [2021-08-21 11:47:24,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5640 states have (on average 2.706382978723404) internal successors, (15264), 5641 states have internal predecessors, (15264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 15264 transitions. [2021-08-21 11:47:24,856 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 15264 transitions. Word has length 114 [2021-08-21 11:47:24,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:24,856 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 15264 transitions. [2021-08-21 11:47:24,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 15264 transitions. [2021-08-21 11:47:24,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:24,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:24,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:24,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-21 11:47:24,864 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:24,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:24,864 INFO L82 PathProgramCache]: Analyzing trace with hash 755044126, now seen corresponding path program 80 times [2021-08-21 11:47:24,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:24,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171134764] [2021-08-21 11:47:24,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:24,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:25,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:25,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171134764] [2021-08-21 11:47:25,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171134764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:25,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:25,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:25,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540107526] [2021-08-21 11:47:25,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:25,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:25,364 INFO L87 Difference]: Start difference. First operand 5642 states and 15264 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:26,883 INFO L93 Difference]: Finished difference Result 18272 states and 48567 transitions. [2021-08-21 11:47:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:26,883 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:26,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:26,913 INFO L225 Difference]: With dead ends: 18272 [2021-08-21 11:47:26,914 INFO L226 Difference]: Without dead ends: 18272 [2021-08-21 11:47:26,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1362.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18272 states. [2021-08-21 11:47:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18272 to 5598. [2021-08-21 11:47:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5596 states have (on average 2.7037169406719084) internal successors, (15130), 5597 states have internal predecessors, (15130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15130 transitions. [2021-08-21 11:47:27,083 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15130 transitions. Word has length 114 [2021-08-21 11:47:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:27,083 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 15130 transitions. [2021-08-21 11:47:27,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15130 transitions. [2021-08-21 11:47:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:27,090 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:27,090 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:27,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-21 11:47:27,090 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1894411716, now seen corresponding path program 81 times [2021-08-21 11:47:27,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:27,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923083970] [2021-08-21 11:47:27,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:27,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:27,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:27,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:27,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923083970] [2021-08-21 11:47:27,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923083970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:27,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:27,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:27,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457239366] [2021-08-21 11:47:27,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:27,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:27,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:27,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:27,495 INFO L87 Difference]: Start difference. First operand 5598 states and 15130 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:29,006 INFO L93 Difference]: Finished difference Result 17494 states and 46722 transitions. [2021-08-21 11:47:29,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:29,034 INFO L225 Difference]: With dead ends: 17494 [2021-08-21 11:47:29,034 INFO L226 Difference]: Without dead ends: 17494 [2021-08-21 11:47:29,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1262.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2021-08-21 11:47:29,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 5662. [2021-08-21 11:47:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.7056537102473497) internal successors, (15314), 5661 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15314 transitions. [2021-08-21 11:47:29,186 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15314 transitions. Word has length 114 [2021-08-21 11:47:29,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:29,187 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15314 transitions. [2021-08-21 11:47:29,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:29,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15314 transitions. [2021-08-21 11:47:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:29,194 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:29,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-21 11:47:29,194 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:29,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:29,194 INFO L82 PathProgramCache]: Analyzing trace with hash 655291618, now seen corresponding path program 82 times [2021-08-21 11:47:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:29,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910263232] [2021-08-21 11:47:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:29,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:29,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:29,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910263232] [2021-08-21 11:47:29,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910263232] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:29,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:29,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:29,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868958251] [2021-08-21 11:47:29,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:29,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:29,609 INFO L87 Difference]: Start difference. First operand 5662 states and 15314 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:31,087 INFO L93 Difference]: Finished difference Result 18267 states and 48454 transitions. [2021-08-21 11:47:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:31,087 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:31,117 INFO L225 Difference]: With dead ends: 18267 [2021-08-21 11:47:31,117 INFO L226 Difference]: Without dead ends: 18267 [2021-08-21 11:47:31,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1279.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:31,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18267 states. [2021-08-21 11:47:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18267 to 5646. [2021-08-21 11:47:31,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.705173635719348) internal successors, (15268), 5645 states have internal predecessors, (15268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15268 transitions. [2021-08-21 11:47:31,291 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15268 transitions. Word has length 114 [2021-08-21 11:47:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:31,292 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15268 transitions. [2021-08-21 11:47:31,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15268 transitions. [2021-08-21 11:47:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:31,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:31,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:31,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-21 11:47:31,299 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash -555049978, now seen corresponding path program 83 times [2021-08-21 11:47:31,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:31,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563306843] [2021-08-21 11:47:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:31,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:31,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:31,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563306843] [2021-08-21 11:47:31,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563306843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:31,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:31,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:31,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336490923] [2021-08-21 11:47:31,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:31,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:31,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:31,702 INFO L87 Difference]: Start difference. First operand 5646 states and 15268 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:33,221 INFO L93 Difference]: Finished difference Result 21210 states and 56072 transitions. [2021-08-21 11:47:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:33,221 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:33,257 INFO L225 Difference]: With dead ends: 21210 [2021-08-21 11:47:33,257 INFO L226 Difference]: Without dead ends: 21210 [2021-08-21 11:47:33,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1248.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:33,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21210 states. [2021-08-21 11:47:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21210 to 5662. [2021-08-21 11:47:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.7056537102473497) internal successors, (15314), 5661 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15314 transitions. [2021-08-21 11:47:33,450 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15314 transitions. Word has length 114 [2021-08-21 11:47:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:33,451 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15314 transitions. [2021-08-21 11:47:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15314 transitions. [2021-08-21 11:47:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:33,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:33,457 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:33,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-21 11:47:33,457 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:33,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:33,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1487068606, now seen corresponding path program 84 times [2021-08-21 11:47:33,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:33,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656031884] [2021-08-21 11:47:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:33,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:33,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:33,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:33,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656031884] [2021-08-21 11:47:33,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656031884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:33,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:33,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:33,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221462718] [2021-08-21 11:47:33,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:33,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:33,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:33,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:33,867 INFO L87 Difference]: Start difference. First operand 5662 states and 15314 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:35,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:35,352 INFO L93 Difference]: Finished difference Result 18435 states and 48910 transitions. [2021-08-21 11:47:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:35,352 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:35,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:35,382 INFO L225 Difference]: With dead ends: 18435 [2021-08-21 11:47:35,383 INFO L226 Difference]: Without dead ends: 18435 [2021-08-21 11:47:35,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1279.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18435 states. [2021-08-21 11:47:35,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18435 to 5630. [2021-08-21 11:47:35,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.704690831556503) internal successors, (15222), 5629 states have internal predecessors, (15222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15222 transitions. [2021-08-21 11:47:35,546 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15222 transitions. Word has length 114 [2021-08-21 11:47:35,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:35,547 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15222 transitions. [2021-08-21 11:47:35,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:35,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15222 transitions. [2021-08-21 11:47:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:35,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:35,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:35,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-21 11:47:35,554 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash -422292224, now seen corresponding path program 85 times [2021-08-21 11:47:35,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:35,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156483985] [2021-08-21 11:47:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:35,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:35,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:35,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156483985] [2021-08-21 11:47:35,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156483985] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:35,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:35,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:35,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681921628] [2021-08-21 11:47:35,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:35,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:35,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:35,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:35,981 INFO L87 Difference]: Start difference. First operand 5630 states and 15222 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:37,460 INFO L93 Difference]: Finished difference Result 17617 states and 46893 transitions. [2021-08-21 11:47:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:37,460 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:37,489 INFO L225 Difference]: With dead ends: 17617 [2021-08-21 11:47:37,490 INFO L226 Difference]: Without dead ends: 17617 [2021-08-21 11:47:37,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1278.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17617 states. [2021-08-21 11:47:37,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17617 to 5678. [2021-08-21 11:47:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5676 states have (on average 2.7061310782241015) internal successors, (15360), 5677 states have internal predecessors, (15360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 15360 transitions. [2021-08-21 11:47:37,646 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 15360 transitions. Word has length 114 [2021-08-21 11:47:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:37,646 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 15360 transitions. [2021-08-21 11:47:37,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 15360 transitions. [2021-08-21 11:47:37,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:37,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:37,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:37,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-21 11:47:37,653 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:37,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1354310852, now seen corresponding path program 86 times [2021-08-21 11:47:37,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:37,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500549781] [2021-08-21 11:47:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:37,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:38,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:38,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500549781] [2021-08-21 11:47:38,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500549781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:38,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:38,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:38,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405477487] [2021-08-21 11:47:38,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:38,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:38,090 INFO L87 Difference]: Start difference. First operand 5678 states and 15360 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:39,561 INFO L93 Difference]: Finished difference Result 17517 states and 46611 transitions. [2021-08-21 11:47:39,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:39,561 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:39,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:39,589 INFO L225 Difference]: With dead ends: 17517 [2021-08-21 11:47:39,590 INFO L226 Difference]: Without dead ends: 17517 [2021-08-21 11:47:39,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1303.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:39,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17517 states. [2021-08-21 11:47:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17517 to 5662. [2021-08-21 11:47:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.7056537102473497) internal successors, (15314), 5661 states have internal predecessors, (15314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15314 transitions. [2021-08-21 11:47:39,742 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15314 transitions. Word has length 114 [2021-08-21 11:47:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:39,742 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15314 transitions. [2021-08-21 11:47:39,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15314 transitions. [2021-08-21 11:47:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:39,748 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:39,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:39,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-21 11:47:39,749 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:39,749 INFO L82 PathProgramCache]: Analyzing trace with hash -551046236, now seen corresponding path program 87 times [2021-08-21 11:47:39,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:39,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089217509] [2021-08-21 11:47:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:39,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:40,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089217509] [2021-08-21 11:47:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089217509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:40,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:40,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:40,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039400019] [2021-08-21 11:47:40,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:40,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:40,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:40,211 INFO L87 Difference]: Start difference. First operand 5662 states and 15314 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:41,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:41,688 INFO L93 Difference]: Finished difference Result 15060 states and 40277 transitions. [2021-08-21 11:47:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:41,712 INFO L225 Difference]: With dead ends: 15060 [2021-08-21 11:47:41,713 INFO L226 Difference]: Without dead ends: 15060 [2021-08-21 11:47:41,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1261.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:41,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15060 states. [2021-08-21 11:47:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15060 to 5574. [2021-08-21 11:47:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.700287150035894) internal successors, (15046), 5573 states have internal predecessors, (15046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15046 transitions. [2021-08-21 11:47:41,850 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15046 transitions. Word has length 114 [2021-08-21 11:47:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:41,850 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15046 transitions. [2021-08-21 11:47:41,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15046 transitions. [2021-08-21 11:47:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:41,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:41,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:41,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-21 11:47:41,857 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:41,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:41,857 INFO L82 PathProgramCache]: Analyzing trace with hash 92009698, now seen corresponding path program 88 times [2021-08-21 11:47:41,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:41,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349463732] [2021-08-21 11:47:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:41,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:42,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:42,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349463732] [2021-08-21 11:47:42,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349463732] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:42,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:42,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:42,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534333796] [2021-08-21 11:47:42,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:42,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:42,269 INFO L87 Difference]: Start difference. First operand 5574 states and 15046 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:43,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:43,779 INFO L93 Difference]: Finished difference Result 21799 states and 58011 transitions. [2021-08-21 11:47:43,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:43,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:43,816 INFO L225 Difference]: With dead ends: 21799 [2021-08-21 11:47:43,816 INFO L226 Difference]: Without dead ends: 21799 [2021-08-21 11:47:43,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1259.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21799 states. [2021-08-21 11:47:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21799 to 5654. [2021-08-21 11:47:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.70276008492569) internal successors, (15276), 5653 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:44,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15276 transitions. [2021-08-21 11:47:44,008 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15276 transitions. Word has length 114 [2021-08-21 11:47:44,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:44,008 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15276 transitions. [2021-08-21 11:47:44,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15276 transitions. [2021-08-21 11:47:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:44,015 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:44,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:44,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-21 11:47:44,015 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:44,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1163029186, now seen corresponding path program 89 times [2021-08-21 11:47:44,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:44,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540890674] [2021-08-21 11:47:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:44,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:44,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:44,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540890674] [2021-08-21 11:47:44,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540890674] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:44,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:44,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:44,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931532927] [2021-08-21 11:47:44,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:44,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:44,420 INFO L87 Difference]: Start difference. First operand 5654 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:45,984 INFO L93 Difference]: Finished difference Result 24227 states and 64368 transitions. [2021-08-21 11:47:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:46,029 INFO L225 Difference]: With dead ends: 24227 [2021-08-21 11:47:46,029 INFO L226 Difference]: Without dead ends: 24227 [2021-08-21 11:47:46,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1251.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:46,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24227 states. [2021-08-21 11:47:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24227 to 5670. [2021-08-21 11:47:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.7032462949894143) internal successors, (15322), 5669 states have internal predecessors, (15322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15322 transitions. [2021-08-21 11:47:46,216 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15322 transitions. Word has length 114 [2021-08-21 11:47:46,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:46,216 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15322 transitions. [2021-08-21 11:47:46,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15322 transitions. [2021-08-21 11:47:46,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:46,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:46,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-21 11:47:46,223 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash -76090912, now seen corresponding path program 90 times [2021-08-21 11:47:46,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:46,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058841976] [2021-08-21 11:47:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:46,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:46,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:46,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058841976] [2021-08-21 11:47:46,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058841976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:46,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:46,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:46,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173741459] [2021-08-21 11:47:46,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:46,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:46,617 INFO L87 Difference]: Start difference. First operand 5670 states and 15322 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:48,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:48,172 INFO L93 Difference]: Finished difference Result 22627 states and 59888 transitions. [2021-08-21 11:47:48,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:48,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:48,209 INFO L225 Difference]: With dead ends: 22627 [2021-08-21 11:47:48,209 INFO L226 Difference]: Without dead ends: 22627 [2021-08-21 11:47:48,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1260.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22627 states. [2021-08-21 11:47:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22627 to 5622. [2021-08-21 11:47:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 2.701779359430605) internal successors, (15184), 5621 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 15184 transitions. [2021-08-21 11:47:48,427 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 15184 transitions. Word has length 114 [2021-08-21 11:47:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:48,427 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 15184 transitions. [2021-08-21 11:47:48,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 15184 transitions. [2021-08-21 11:47:48,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:48,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:48,433 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:48,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-21 11:47:48,434 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:48,434 INFO L82 PathProgramCache]: Analyzing trace with hash -996463488, now seen corresponding path program 91 times [2021-08-21 11:47:48,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:48,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854820267] [2021-08-21 11:47:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:48,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:48,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:48,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854820267] [2021-08-21 11:47:48,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854820267] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:48,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:48,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:48,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921983912] [2021-08-21 11:47:48,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:48,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:48,821 INFO L87 Difference]: Start difference. First operand 5622 states and 15184 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:50,313 INFO L93 Difference]: Finished difference Result 21905 states and 58177 transitions. [2021-08-21 11:47:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:50,348 INFO L225 Difference]: With dead ends: 21905 [2021-08-21 11:47:50,348 INFO L226 Difference]: Without dead ends: 21905 [2021-08-21 11:47:50,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1231.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21905 states. [2021-08-21 11:47:50,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21905 to 5654. [2021-08-21 11:47:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.70276008492569) internal successors, (15276), 5653 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15276 transitions. [2021-08-21 11:47:50,526 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15276 transitions. Word has length 114 [2021-08-21 11:47:50,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:50,526 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15276 transitions. [2021-08-21 11:47:50,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:50,526 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15276 transitions. [2021-08-21 11:47:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:50,533 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:50,533 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:50,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-21 11:47:50,533 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2059383710, now seen corresponding path program 92 times [2021-08-21 11:47:50,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:50,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057066127] [2021-08-21 11:47:50,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:50,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:50,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:50,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057066127] [2021-08-21 11:47:50,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057066127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:50,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:50,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:50,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538834399] [2021-08-21 11:47:50,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:50,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:50,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:50,943 INFO L87 Difference]: Start difference. First operand 5654 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:52,485 INFO L93 Difference]: Finished difference Result 22678 states and 59909 transitions. [2021-08-21 11:47:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:52,524 INFO L225 Difference]: With dead ends: 22678 [2021-08-21 11:47:52,524 INFO L226 Difference]: Without dead ends: 22678 [2021-08-21 11:47:52,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1256.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22678 states. [2021-08-21 11:47:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22678 to 5638. [2021-08-21 11:47:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5636 states have (on average 2.7022711142654363) internal successors, (15230), 5637 states have internal predecessors, (15230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 15230 transitions. [2021-08-21 11:47:52,718 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 15230 transitions. Word has length 114 [2021-08-21 11:47:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:52,718 INFO L470 AbstractCegarLoop]: Abstraction has 5638 states and 15230 transitions. [2021-08-21 11:47:52,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 15230 transitions. [2021-08-21 11:47:52,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:52,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:52,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:52,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-21 11:47:52,725 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:52,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:52,726 INFO L82 PathProgramCache]: Analyzing trace with hash 849042114, now seen corresponding path program 93 times [2021-08-21 11:47:52,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:52,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246522608] [2021-08-21 11:47:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:52,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:53,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:53,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246522608] [2021-08-21 11:47:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246522608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:53,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:53,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:53,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795189440] [2021-08-21 11:47:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:53,174 INFO L87 Difference]: Start difference. First operand 5638 states and 15230 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:54,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:54,658 INFO L93 Difference]: Finished difference Result 22044 states and 58394 transitions. [2021-08-21 11:47:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:54,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:54,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:54,693 INFO L225 Difference]: With dead ends: 22044 [2021-08-21 11:47:54,694 INFO L226 Difference]: Without dead ends: 22044 [2021-08-21 11:47:54,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1298.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22044 states. [2021-08-21 11:47:54,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22044 to 5654. [2021-08-21 11:47:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.70276008492569) internal successors, (15276), 5653 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:54,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15276 transitions. [2021-08-21 11:47:54,881 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15276 transitions. Word has length 114 [2021-08-21 11:47:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:54,881 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15276 transitions. [2021-08-21 11:47:54,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15276 transitions. [2021-08-21 11:47:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:54,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:54,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:54,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-21 11:47:54,888 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:54,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash -82976514, now seen corresponding path program 94 times [2021-08-21 11:47:54,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:54,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168087472] [2021-08-21 11:47:54,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:54,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:55,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:55,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168087472] [2021-08-21 11:47:55,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168087472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:55,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:55,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:55,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612885023] [2021-08-21 11:47:55,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:55,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:55,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:55,292 INFO L87 Difference]: Start difference. First operand 5654 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:56,774 INFO L93 Difference]: Finished difference Result 19551 states and 51946 transitions. [2021-08-21 11:47:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:56,806 INFO L225 Difference]: With dead ends: 19551 [2021-08-21 11:47:56,806 INFO L226 Difference]: Without dead ends: 19551 [2021-08-21 11:47:56,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1280.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19551 states. [2021-08-21 11:47:56,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19551 to 5590. [2021-08-21 11:47:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5588 states have (on average 2.7007874015748032) internal successors, (15092), 5589 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 15092 transitions. [2021-08-21 11:47:56,974 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 15092 transitions. Word has length 114 [2021-08-21 11:47:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:56,974 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 15092 transitions. [2021-08-21 11:47:56,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 15092 transitions. [2021-08-21 11:47:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:56,980 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:56,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:56,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-21 11:47:56,981 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1454680606, now seen corresponding path program 95 times [2021-08-21 11:47:56,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:56,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244063193] [2021-08-21 11:47:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:56,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:57,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:57,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244063193] [2021-08-21 11:47:57,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244063193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:57,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:57,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:57,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385610750] [2021-08-21 11:47:57,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:57,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:57,403 INFO L87 Difference]: Start difference. First operand 5590 states and 15092 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:58,907 INFO L93 Difference]: Finished difference Result 19981 states and 53414 transitions. [2021-08-21 11:47:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:47:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:47:58,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:58,941 INFO L225 Difference]: With dead ends: 19981 [2021-08-21 11:47:58,942 INFO L226 Difference]: Without dead ends: 19981 [2021-08-21 11:47:58,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1254.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:47:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2021-08-21 11:47:59,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 5638. [2021-08-21 11:47:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5636 states have (on average 2.7022711142654363) internal successors, (15230), 5637 states have internal predecessors, (15230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:59,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 15230 transitions. [2021-08-21 11:47:59,123 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 15230 transitions. Word has length 114 [2021-08-21 11:47:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:59,123 INFO L470 AbstractCegarLoop]: Abstraction has 5638 states and 15230 transitions. [2021-08-21 11:47:59,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 15230 transitions. [2021-08-21 11:47:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:47:59,130 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:59,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:59,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-21 11:47:59,130 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:47:59,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash -383661118, now seen corresponding path program 96 times [2021-08-21 11:47:59,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:59,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215819426] [2021-08-21 11:47:59,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:59,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:59,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:59,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215819426] [2021-08-21 11:47:59,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215819426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:59,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:59,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:47:59,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129653186] [2021-08-21 11:47:59,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:47:59,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:47:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:47:59,555 INFO L87 Difference]: Start difference. First operand 5638 states and 15230 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:01,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:01,052 INFO L93 Difference]: Finished difference Result 20053 states and 53546 transitions. [2021-08-21 11:48:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:01,085 INFO L225 Difference]: With dead ends: 20053 [2021-08-21 11:48:01,086 INFO L226 Difference]: Without dead ends: 20053 [2021-08-21 11:48:01,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1259.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20053 states. [2021-08-21 11:48:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20053 to 5654. [2021-08-21 11:48:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.70276008492569) internal successors, (15276), 5653 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15276 transitions. [2021-08-21 11:48:01,257 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15276 transitions. Word has length 114 [2021-08-21 11:48:01,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:01,257 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15276 transitions. [2021-08-21 11:48:01,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15276 transitions. [2021-08-21 11:48:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:01,264 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:01,264 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:01,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-21 11:48:01,265 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:01,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1622781216, now seen corresponding path program 97 times [2021-08-21 11:48:01,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:01,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395346935] [2021-08-21 11:48:01,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:01,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:01,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:01,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395346935] [2021-08-21 11:48:01,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395346935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:01,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:01,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:01,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936365105] [2021-08-21 11:48:01,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:01,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:01,686 INFO L87 Difference]: Start difference. First operand 5654 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:03,164 INFO L93 Difference]: Finished difference Result 19463 states and 51624 transitions. [2021-08-21 11:48:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:03,195 INFO L225 Difference]: With dead ends: 19463 [2021-08-21 11:48:03,195 INFO L226 Difference]: Without dead ends: 19463 [2021-08-21 11:48:03,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1240.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:03,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19463 states. [2021-08-21 11:48:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19463 to 5606. [2021-08-21 11:48:03,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5604 states have (on average 2.701284796573876) internal successors, (15138), 5605 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 15138 transitions. [2021-08-21 11:48:03,377 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 15138 transitions. Word has length 114 [2021-08-21 11:48:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:03,377 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 15138 transitions. [2021-08-21 11:48:03,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 15138 transitions. [2021-08-21 11:48:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:03,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:03,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:03,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-21 11:48:03,384 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:03,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:03,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1710162492, now seen corresponding path program 98 times [2021-08-21 11:48:03,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:03,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125991404] [2021-08-21 11:48:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:03,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:03,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:03,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125991404] [2021-08-21 11:48:03,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125991404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:03,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:03,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:03,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054676936] [2021-08-21 11:48:03,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:03,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:03,786 INFO L87 Difference]: Start difference. First operand 5606 states and 15138 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:05,244 INFO L93 Difference]: Finished difference Result 16163 states and 43075 transitions. [2021-08-21 11:48:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:05,245 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:05,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:05,270 INFO L225 Difference]: With dead ends: 16163 [2021-08-21 11:48:05,270 INFO L226 Difference]: Without dead ends: 16163 [2021-08-21 11:48:05,270 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1210.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16163 states. [2021-08-21 11:48:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16163 to 5550. [2021-08-21 11:48:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 5548 states have (on average 2.6989906272530644) internal successors, (14974), 5549 states have internal predecessors, (14974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 14974 transitions. [2021-08-21 11:48:05,421 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 14974 transitions. Word has length 114 [2021-08-21 11:48:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:05,421 INFO L470 AbstractCegarLoop]: Abstraction has 5550 states and 14974 transitions. [2021-08-21 11:48:05,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 14974 transitions. [2021-08-21 11:48:05,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:05,428 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:05,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:05,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-21 11:48:05,428 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:05,429 INFO L82 PathProgramCache]: Analyzing trace with hash -2040393852, now seen corresponding path program 99 times [2021-08-21 11:48:05,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:05,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269206816] [2021-08-21 11:48:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:05,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:05,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:05,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269206816] [2021-08-21 11:48:05,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269206816] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:05,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:05,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:05,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908927482] [2021-08-21 11:48:05,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:05,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:05,873 INFO L87 Difference]: Start difference. First operand 5550 states and 14974 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:07,383 INFO L93 Difference]: Finished difference Result 17728 states and 47424 transitions. [2021-08-21 11:48:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:07,384 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:07,415 INFO L225 Difference]: With dead ends: 17728 [2021-08-21 11:48:07,415 INFO L226 Difference]: Without dead ends: 17728 [2021-08-21 11:48:07,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1239.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:07,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17728 states. [2021-08-21 11:48:07,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17728 to 5646. [2021-08-21 11:48:07,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:48:07,562 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:48:07,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:07,562 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:48:07,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:07,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:48:07,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:07,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:07,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:07,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-21 11:48:07,569 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash -969374364, now seen corresponding path program 100 times [2021-08-21 11:48:07,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:07,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958242931] [2021-08-21 11:48:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:07,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:07,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:07,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958242931] [2021-08-21 11:48:07,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958242931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:07,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:07,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:07,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33658825] [2021-08-21 11:48:07,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:07,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:07,985 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:09,508 INFO L93 Difference]: Finished difference Result 20156 states and 53781 transitions. [2021-08-21 11:48:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:09,508 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:09,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:09,541 INFO L225 Difference]: With dead ends: 20156 [2021-08-21 11:48:09,541 INFO L226 Difference]: Without dead ends: 20156 [2021-08-21 11:48:09,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1229.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2021-08-21 11:48:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 5662. [2021-08-21 11:48:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.7024734982332155) internal successors, (15296), 5661 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15296 transitions. [2021-08-21 11:48:09,713 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15296 transitions. Word has length 114 [2021-08-21 11:48:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:09,713 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15296 transitions. [2021-08-21 11:48:09,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15296 transitions. [2021-08-21 11:48:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:09,719 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:09,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:09,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-21 11:48:09,720 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2086472834, now seen corresponding path program 101 times [2021-08-21 11:48:09,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:09,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165129975] [2021-08-21 11:48:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:09,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:10,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:10,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165129975] [2021-08-21 11:48:10,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165129975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:10,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:10,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:10,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105873947] [2021-08-21 11:48:10,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:10,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:10,167 INFO L87 Difference]: Start difference. First operand 5662 states and 15296 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:11,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:11,725 INFO L93 Difference]: Finished difference Result 18556 states and 49301 transitions. [2021-08-21 11:48:11,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:11,726 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:11,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:11,754 INFO L225 Difference]: With dead ends: 18556 [2021-08-21 11:48:11,754 INFO L226 Difference]: Without dead ends: 18556 [2021-08-21 11:48:11,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1281.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18556 states. [2021-08-21 11:48:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18556 to 5614. [2021-08-21 11:48:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5612 states have (on average 2.700997861724875) internal successors, (15158), 5613 states have internal predecessors, (15158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 15158 transitions. [2021-08-21 11:48:11,911 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 15158 transitions. Word has length 114 [2021-08-21 11:48:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:11,911 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 15158 transitions. [2021-08-21 11:48:11,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:11,912 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 15158 transitions. [2021-08-21 11:48:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:11,918 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:11,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:11,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-21 11:48:11,918 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1166100258, now seen corresponding path program 102 times [2021-08-21 11:48:11,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:11,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429146653] [2021-08-21 11:48:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:11,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:12,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:12,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429146653] [2021-08-21 11:48:12,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429146653] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:12,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:12,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:12,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720876687] [2021-08-21 11:48:12,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:12,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:12,349 INFO L87 Difference]: Start difference. First operand 5614 states and 15158 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:13,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:13,880 INFO L93 Difference]: Finished difference Result 17834 states and 47590 transitions. [2021-08-21 11:48:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:13,881 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:13,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:13,911 INFO L225 Difference]: With dead ends: 17834 [2021-08-21 11:48:13,911 INFO L226 Difference]: Without dead ends: 17834 [2021-08-21 11:48:13,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1285.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17834 states. [2021-08-21 11:48:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17834 to 5646. [2021-08-21 11:48:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:48:14,090 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:48:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:14,091 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:48:14,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:48:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:14,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:14,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:14,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-21 11:48:14,098 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:14,098 INFO L82 PathProgramCache]: Analyzing trace with hash -73019840, now seen corresponding path program 103 times [2021-08-21 11:48:14,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:14,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599792360] [2021-08-21 11:48:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:14,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:14,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:14,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599792360] [2021-08-21 11:48:14,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599792360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:14,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:14,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:14,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879218627] [2021-08-21 11:48:14,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:14,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:14,508 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:16,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:16,051 INFO L93 Difference]: Finished difference Result 18607 states and 49322 transitions. [2021-08-21 11:48:16,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:16,051 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:16,079 INFO L225 Difference]: With dead ends: 18607 [2021-08-21 11:48:16,079 INFO L226 Difference]: Without dead ends: 18607 [2021-08-21 11:48:16,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1257.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18607 states. [2021-08-21 11:48:16,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18607 to 5630. [2021-08-21 11:48:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.701492537313433) internal successors, (15204), 5629 states have internal predecessors, (15204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:16,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15204 transitions. [2021-08-21 11:48:16,225 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15204 transitions. Word has length 114 [2021-08-21 11:48:16,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:16,225 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15204 transitions. [2021-08-21 11:48:16,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15204 transitions. [2021-08-21 11:48:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:16,232 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:16,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:16,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-21 11:48:16,232 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1283361436, now seen corresponding path program 104 times [2021-08-21 11:48:16,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:16,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306101975] [2021-08-21 11:48:16,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:16,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:16,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:16,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306101975] [2021-08-21 11:48:16,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306101975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:16,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:16,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:16,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47564293] [2021-08-21 11:48:16,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:16,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:16,629 INFO L87 Difference]: Start difference. First operand 5630 states and 15204 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:18,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:18,070 INFO L93 Difference]: Finished difference Result 17973 states and 47807 transitions. [2021-08-21 11:48:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:18,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:18,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:18,099 INFO L225 Difference]: With dead ends: 17973 [2021-08-21 11:48:18,099 INFO L226 Difference]: Without dead ends: 17973 [2021-08-21 11:48:18,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:18,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2021-08-21 11:48:18,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 5646. [2021-08-21 11:48:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:48:18,293 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:48:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:18,293 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:48:18,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:48:18,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:18,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:18,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-21 11:48:18,299 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:18,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2079587232, now seen corresponding path program 105 times [2021-08-21 11:48:18,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:18,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163958033] [2021-08-21 11:48:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:18,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:18,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:18,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163958033] [2021-08-21 11:48:18,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163958033] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:18,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:18,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:18,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093207337] [2021-08-21 11:48:18,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:18,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:18,765 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:20,303 INFO L93 Difference]: Finished difference Result 15480 states and 41359 transitions. [2021-08-21 11:48:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:20,303 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:20,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:20,330 INFO L225 Difference]: With dead ends: 15480 [2021-08-21 11:48:20,331 INFO L226 Difference]: Without dead ends: 15480 [2021-08-21 11:48:20,331 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1313.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15480 states. [2021-08-21 11:48:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15480 to 5582. [2021-08-21 11:48:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5580 states have (on average 2.7) internal successors, (15066), 5581 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 15066 transitions. [2021-08-21 11:48:20,480 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 15066 transitions. Word has length 114 [2021-08-21 11:48:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 15066 transitions. [2021-08-21 11:48:20,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 15066 transitions. [2021-08-21 11:48:20,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:20,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:20,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:20,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-21 11:48:20,487 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:20,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:20,487 INFO L82 PathProgramCache]: Analyzing trace with hash 707883140, now seen corresponding path program 106 times [2021-08-21 11:48:20,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:20,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109450485] [2021-08-21 11:48:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:20,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:20,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:20,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109450485] [2021-08-21 11:48:20,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109450485] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:20,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:20,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:20,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683763666] [2021-08-21 11:48:20,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:20,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:20,904 INFO L87 Difference]: Start difference. First operand 5582 states and 15066 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:22,433 INFO L93 Difference]: Finished difference Result 20433 states and 54604 transitions. [2021-08-21 11:48:22,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:22,433 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:22,466 INFO L225 Difference]: With dead ends: 20433 [2021-08-21 11:48:22,466 INFO L226 Difference]: Without dead ends: 20433 [2021-08-21 11:48:22,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1241.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20433 states. [2021-08-21 11:48:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20433 to 5630. [2021-08-21 11:48:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.701492537313433) internal successors, (15204), 5629 states have internal predecessors, (15204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15204 transitions. [2021-08-21 11:48:22,638 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15204 transitions. Word has length 114 [2021-08-21 11:48:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:22,638 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15204 transitions. [2021-08-21 11:48:22,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15204 transitions. [2021-08-21 11:48:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:22,645 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:22,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:22,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-21 11:48:22,645 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1778902628, now seen corresponding path program 107 times [2021-08-21 11:48:22,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:22,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105751610] [2021-08-21 11:48:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:22,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:23,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105751610] [2021-08-21 11:48:23,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105751610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:23,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:23,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:23,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343231795] [2021-08-21 11:48:23,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:23,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:23,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:23,035 INFO L87 Difference]: Start difference. First operand 5630 states and 15204 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:24,542 INFO L93 Difference]: Finished difference Result 20505 states and 54736 transitions. [2021-08-21 11:48:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:24,577 INFO L225 Difference]: With dead ends: 20505 [2021-08-21 11:48:24,577 INFO L226 Difference]: Without dead ends: 20505 [2021-08-21 11:48:24,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1255.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20505 states. [2021-08-21 11:48:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20505 to 5646. [2021-08-21 11:48:24,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:48:24,762 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:48:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:24,762 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:48:24,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:48:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:24,769 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:24,769 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:24,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-21 11:48:24,769 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash 539782530, now seen corresponding path program 108 times [2021-08-21 11:48:24,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:24,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965871563] [2021-08-21 11:48:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:24,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:25,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:25,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:25,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965871563] [2021-08-21 11:48:25,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965871563] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:25,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:25,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:25,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788116090] [2021-08-21 11:48:25,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:25,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:25,163 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:26,683 INFO L93 Difference]: Finished difference Result 19915 states and 52814 transitions. [2021-08-21 11:48:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:26,713 INFO L225 Difference]: With dead ends: 19915 [2021-08-21 11:48:26,713 INFO L226 Difference]: Without dead ends: 19915 [2021-08-21 11:48:26,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1273.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19915 states. [2021-08-21 11:48:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19915 to 5598. [2021-08-21 11:48:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5596 states have (on average 2.7005003573981416) internal successors, (15112), 5597 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15112 transitions. [2021-08-21 11:48:26,881 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15112 transitions. Word has length 114 [2021-08-21 11:48:26,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:26,881 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 15112 transitions. [2021-08-21 11:48:26,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,881 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15112 transitions. [2021-08-21 11:48:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:26,887 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:26,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:26,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-21 11:48:26,888 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:26,888 INFO L82 PathProgramCache]: Analyzing trace with hash 452401254, now seen corresponding path program 109 times [2021-08-21 11:48:26,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:26,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115184234] [2021-08-21 11:48:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:26,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:27,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:27,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:27,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115184234] [2021-08-21 11:48:27,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115184234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:27,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:27,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:27,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733918808] [2021-08-21 11:48:27,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:27,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:27,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:27,341 INFO L87 Difference]: Start difference. First operand 5598 states and 15112 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:28,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:28,826 INFO L93 Difference]: Finished difference Result 16615 states and 44265 transitions. [2021-08-21 11:48:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:28,851 INFO L225 Difference]: With dead ends: 16615 [2021-08-21 11:48:28,852 INFO L226 Difference]: Without dead ends: 16615 [2021-08-21 11:48:28,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1261.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16615 states. [2021-08-21 11:48:28,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16615 to 5566. [2021-08-21 11:48:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5564 states have (on average 2.699496764917326) internal successors, (15020), 5565 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15020 transitions. [2021-08-21 11:48:28,987 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15020 transitions. Word has length 114 [2021-08-21 11:48:28,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:28,987 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15020 transitions. [2021-08-21 11:48:28,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15020 transitions. [2021-08-21 11:48:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:28,994 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:28,994 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:28,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-21 11:48:28,994 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:28,994 INFO L82 PathProgramCache]: Analyzing trace with hash 113198628, now seen corresponding path program 110 times [2021-08-21 11:48:28,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:28,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124400201] [2021-08-21 11:48:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:28,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:29,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:29,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124400201] [2021-08-21 11:48:29,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124400201] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:29,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:29,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:29,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946287879] [2021-08-21 11:48:29,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:29,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:29,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:29,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:29,398 INFO L87 Difference]: Start difference. First operand 5566 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:30,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:30,900 INFO L93 Difference]: Finished difference Result 15894 states and 42781 transitions. [2021-08-21 11:48:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:30,927 INFO L225 Difference]: With dead ends: 15894 [2021-08-21 11:48:30,927 INFO L226 Difference]: Without dead ends: 15894 [2021-08-21 11:48:30,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1231.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15894 states. [2021-08-21 11:48:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15894 to 5630. [2021-08-21 11:48:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.701492537313433) internal successors, (15204), 5629 states have internal predecessors, (15204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15204 transitions. [2021-08-21 11:48:31,096 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15204 transitions. Word has length 114 [2021-08-21 11:48:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:31,097 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15204 transitions. [2021-08-21 11:48:31,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15204 transitions. [2021-08-21 11:48:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:31,103 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:31,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-21 11:48:31,103 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:31,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1184218116, now seen corresponding path program 111 times [2021-08-21 11:48:31,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:31,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882137904] [2021-08-21 11:48:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:31,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:31,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:31,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882137904] [2021-08-21 11:48:31,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882137904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:31,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:31,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:31,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933253204] [2021-08-21 11:48:31,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:31,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:31,535 INFO L87 Difference]: Start difference. First operand 5630 states and 15204 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:33,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:33,084 INFO L93 Difference]: Finished difference Result 15966 states and 42913 transitions. [2021-08-21 11:48:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:33,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:33,110 INFO L225 Difference]: With dead ends: 15966 [2021-08-21 11:48:33,110 INFO L226 Difference]: Without dead ends: 15966 [2021-08-21 11:48:33,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1283.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15966 states. [2021-08-21 11:48:33,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15966 to 5646. [2021-08-21 11:48:33,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:48:33,254 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:48:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:33,254 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:48:33,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:48:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:33,261 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:33,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:33,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-21 11:48:33,261 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash -54901982, now seen corresponding path program 112 times [2021-08-21 11:48:33,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:33,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833773332] [2021-08-21 11:48:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:33,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:33,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:33,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833773332] [2021-08-21 11:48:33,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833773332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:33,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:33,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:33,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317778361] [2021-08-21 11:48:33,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:33,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:33,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:33,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:33,681 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:35,169 INFO L93 Difference]: Finished difference Result 15376 states and 40991 transitions. [2021-08-21 11:48:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:35,191 INFO L225 Difference]: With dead ends: 15376 [2021-08-21 11:48:35,191 INFO L226 Difference]: Without dead ends: 15376 [2021-08-21 11:48:35,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1232.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:35,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2021-08-21 11:48:35,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 5598. [2021-08-21 11:48:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5596 states have (on average 2.7005003573981416) internal successors, (15112), 5597 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15112 transitions. [2021-08-21 11:48:35,312 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15112 transitions. Word has length 114 [2021-08-21 11:48:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:35,312 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 15112 transitions. [2021-08-21 11:48:35,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15112 transitions. [2021-08-21 11:48:35,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:35,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:35,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:35,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-21 11:48:35,318 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:35,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:35,318 INFO L82 PathProgramCache]: Analyzing trace with hash -142283258, now seen corresponding path program 113 times [2021-08-21 11:48:35,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:35,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846834192] [2021-08-21 11:48:35,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:35,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:35,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:35,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:35,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846834192] [2021-08-21 11:48:35,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846834192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:35,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:35,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:35,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497811604] [2021-08-21 11:48:35,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:35,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:35,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:35,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:35,710 INFO L87 Difference]: Start difference. First operand 5598 states and 15112 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:37,218 INFO L93 Difference]: Finished difference Result 15446 states and 41301 transitions. [2021-08-21 11:48:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:37,244 INFO L225 Difference]: With dead ends: 15446 [2021-08-21 11:48:37,244 INFO L226 Difference]: Without dead ends: 15446 [2021-08-21 11:48:37,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1207.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:37,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2021-08-21 11:48:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 5582. [2021-08-21 11:48:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5580 states have (on average 2.7) internal successors, (15066), 5581 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 15066 transitions. [2021-08-21 11:48:37,383 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 15066 transitions. Word has length 114 [2021-08-21 11:48:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:37,384 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 15066 transitions. [2021-08-21 11:48:37,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 15066 transitions. [2021-08-21 11:48:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:37,390 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:37,390 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:37,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-21 11:48:37,390 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:37,391 INFO L82 PathProgramCache]: Analyzing trace with hash -270150592, now seen corresponding path program 114 times [2021-08-21 11:48:37,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:37,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213864042] [2021-08-21 11:48:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:37,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:37,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:37,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213864042] [2021-08-21 11:48:37,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213864042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:37,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:37,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:37,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316205706] [2021-08-21 11:48:37,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:37,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:37,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:37,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:37,813 INFO L87 Difference]: Start difference. First operand 5582 states and 15066 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:39,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:39,270 INFO L93 Difference]: Finished difference Result 12301 states and 33009 transitions. [2021-08-21 11:48:39,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:39,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:39,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:39,289 INFO L225 Difference]: With dead ends: 12301 [2021-08-21 11:48:39,290 INFO L226 Difference]: Without dead ends: 12301 [2021-08-21 11:48:39,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1214.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:39,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2021-08-21 11:48:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 5526. [2021-08-21 11:48:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5524 states have (on average 2.6976828385228098) internal successors, (14902), 5525 states have internal predecessors, (14902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:39,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 14902 transitions. [2021-08-21 11:48:39,403 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 14902 transitions. Word has length 114 [2021-08-21 11:48:39,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:39,403 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 14902 transitions. [2021-08-21 11:48:39,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:39,404 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 14902 transitions. [2021-08-21 11:48:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:39,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:39,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:39,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-21 11:48:39,410 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:39,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash 368146180, now seen corresponding path program 115 times [2021-08-21 11:48:39,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:39,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209902973] [2021-08-21 11:48:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:39,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:39,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:39,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209902973] [2021-08-21 11:48:39,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209902973] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:39,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:39,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:39,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360493485] [2021-08-21 11:48:39,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:39,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:39,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:39,811 INFO L87 Difference]: Start difference. First operand 5526 states and 14902 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:41,363 INFO L93 Difference]: Finished difference Result 17063 states and 45499 transitions. [2021-08-21 11:48:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:41,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:41,389 INFO L225 Difference]: With dead ends: 17063 [2021-08-21 11:48:41,389 INFO L226 Difference]: Without dead ends: 17063 [2021-08-21 11:48:41,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1256.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17063 states. [2021-08-21 11:48:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17063 to 5700. [2021-08-21 11:48:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:48:41,536 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:48:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:41,537 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:48:41,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:48:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:41,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:41,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:41,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-21 11:48:41,543 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1439165668, now seen corresponding path program 116 times [2021-08-21 11:48:41,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:41,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274348042] [2021-08-21 11:48:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:41,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:41,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:41,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274348042] [2021-08-21 11:48:41,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274348042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:41,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:41,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:41,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606181836] [2021-08-21 11:48:41,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:41,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:41,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:41,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:41,947 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:43,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:43,453 INFO L93 Difference]: Finished difference Result 19491 states and 51856 transitions. [2021-08-21 11:48:43,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:43,453 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:43,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:43,492 INFO L225 Difference]: With dead ends: 19491 [2021-08-21 11:48:43,492 INFO L226 Difference]: Without dead ends: 19491 [2021-08-21 11:48:43,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1278.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:43,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19491 states. [2021-08-21 11:48:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19491 to 5716. [2021-08-21 11:48:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5714 states have (on average 2.7037101855092756) internal successors, (15449), 5715 states have internal predecessors, (15449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 15449 transitions. [2021-08-21 11:48:43,696 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 15449 transitions. Word has length 114 [2021-08-21 11:48:43,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 15449 transitions. [2021-08-21 11:48:43,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 15449 transitions. [2021-08-21 11:48:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:43,705 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:43,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:43,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-21 11:48:43,708 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash 200045570, now seen corresponding path program 117 times [2021-08-21 11:48:43,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:43,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550952891] [2021-08-21 11:48:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:43,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:44,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:44,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550952891] [2021-08-21 11:48:44,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550952891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:44,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:44,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:44,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136056479] [2021-08-21 11:48:44,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:44,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:44,149 INFO L87 Difference]: Start difference. First operand 5716 states and 15449 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:45,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:45,715 INFO L93 Difference]: Finished difference Result 17891 states and 47376 transitions. [2021-08-21 11:48:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:45,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:45,744 INFO L225 Difference]: With dead ends: 17891 [2021-08-21 11:48:45,744 INFO L226 Difference]: Without dead ends: 17891 [2021-08-21 11:48:45,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1306.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17891 states. [2021-08-21 11:48:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17891 to 5668. [2021-08-21 11:48:45,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5666 states have (on average 2.702259089304624) internal successors, (15311), 5667 states have internal predecessors, (15311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 15311 transitions. [2021-08-21 11:48:45,898 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 15311 transitions. Word has length 114 [2021-08-21 11:48:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:45,898 INFO L470 AbstractCegarLoop]: Abstraction has 5668 states and 15311 transitions. [2021-08-21 11:48:45,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 15311 transitions. [2021-08-21 11:48:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:45,904 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:45,905 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:45,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-21 11:48:45,905 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:45,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:45,905 INFO L82 PathProgramCache]: Analyzing trace with hash -720327006, now seen corresponding path program 118 times [2021-08-21 11:48:45,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:45,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331611972] [2021-08-21 11:48:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:45,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:46,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:46,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331611972] [2021-08-21 11:48:46,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331611972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:46,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:46,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:46,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102184620] [2021-08-21 11:48:46,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:46,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:46,322 INFO L87 Difference]: Start difference. First operand 5668 states and 15311 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:47,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:47,817 INFO L93 Difference]: Finished difference Result 20711 states and 54823 transitions. [2021-08-21 11:48:47,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:47,818 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:47,850 INFO L225 Difference]: With dead ends: 20711 [2021-08-21 11:48:47,850 INFO L226 Difference]: Without dead ends: 20711 [2021-08-21 11:48:47,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1243.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:47,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20711 states. [2021-08-21 11:48:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20711 to 5700. [2021-08-21 11:48:48,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:48,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:48:48,026 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:48:48,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:48,026 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:48:48,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:48:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:48,033 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:48,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:48,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-21 11:48:48,033 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1959447104, now seen corresponding path program 119 times [2021-08-21 11:48:48,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:48,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738264631] [2021-08-21 11:48:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:48,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:48,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:48,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738264631] [2021-08-21 11:48:48,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738264631] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:48,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:48,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:48,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728283305] [2021-08-21 11:48:48,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:48,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:48,429 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:49,902 INFO L93 Difference]: Finished difference Result 21484 states and 56555 transitions. [2021-08-21 11:48:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:49,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:49,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:49,937 INFO L225 Difference]: With dead ends: 21484 [2021-08-21 11:48:49,937 INFO L226 Difference]: Without dead ends: 21484 [2021-08-21 11:48:49,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1265.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21484 states. [2021-08-21 11:48:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21484 to 5684. [2021-08-21 11:48:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5682 states have (on average 2.7027455121436113) internal successors, (15357), 5683 states have internal predecessors, (15357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:50,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 15357 transitions. [2021-08-21 11:48:50,121 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 15357 transitions. Word has length 114 [2021-08-21 11:48:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:50,121 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 15357 transitions. [2021-08-21 11:48:50,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:50,121 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 15357 transitions. [2021-08-21 11:48:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:50,127 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:50,127 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:50,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-21 11:48:50,127 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1125178596, now seen corresponding path program 120 times [2021-08-21 11:48:50,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:50,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819367426] [2021-08-21 11:48:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:50,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:50,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:50,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819367426] [2021-08-21 11:48:50,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819367426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:50,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:50,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:50,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259451194] [2021-08-21 11:48:50,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:50,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:50,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:50,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:50,516 INFO L87 Difference]: Start difference. First operand 5684 states and 15357 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:52,046 INFO L93 Difference]: Finished difference Result 20850 states and 55040 transitions. [2021-08-21 11:48:52,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:52,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:52,086 INFO L225 Difference]: With dead ends: 20850 [2021-08-21 11:48:52,087 INFO L226 Difference]: Without dead ends: 20850 [2021-08-21 11:48:52,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1253.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:52,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20850 states. [2021-08-21 11:48:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20850 to 5700. [2021-08-21 11:48:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:48:52,284 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:48:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:52,284 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:48:52,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:48:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:52,291 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:52,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:52,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-21 11:48:52,291 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:52,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:52,291 INFO L82 PathProgramCache]: Analyzing trace with hash 193159968, now seen corresponding path program 121 times [2021-08-21 11:48:52,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:52,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110409359] [2021-08-21 11:48:52,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:52,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:52,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:52,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110409359] [2021-08-21 11:48:52,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110409359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:52,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:52,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:52,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347216187] [2021-08-21 11:48:52,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:52,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:52,713 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:54,182 INFO L93 Difference]: Finished difference Result 18075 states and 47878 transitions. [2021-08-21 11:48:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:54,212 INFO L225 Difference]: With dead ends: 18075 [2021-08-21 11:48:54,212 INFO L226 Difference]: Without dead ends: 18075 [2021-08-21 11:48:54,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1291.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18075 states. [2021-08-21 11:48:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18075 to 5636. [2021-08-21 11:48:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5634 states have (on average 2.7012779552715656) internal successors, (15219), 5635 states have internal predecessors, (15219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 15219 transitions. [2021-08-21 11:48:54,373 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 15219 transitions. Word has length 114 [2021-08-21 11:48:54,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:54,373 INFO L470 AbstractCegarLoop]: Abstraction has 5636 states and 15219 transitions. [2021-08-21 11:48:54,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:54,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 15219 transitions. [2021-08-21 11:48:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:54,380 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:54,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:54,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-21 11:48:54,380 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1332527558, now seen corresponding path program 122 times [2021-08-21 11:48:54,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:54,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643207914] [2021-08-21 11:48:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:54,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:54,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:54,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643207914] [2021-08-21 11:48:54,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643207914] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:54,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:54,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:54,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752908223] [2021-08-21 11:48:54,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:54,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:54,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:54,778 INFO L87 Difference]: Start difference. First operand 5636 states and 15219 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:56,258 INFO L93 Difference]: Finished difference Result 17297 states and 46033 transitions. [2021-08-21 11:48:56,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:56,259 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:56,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:56,285 INFO L225 Difference]: With dead ends: 17297 [2021-08-21 11:48:56,286 INFO L226 Difference]: Without dead ends: 17297 [2021-08-21 11:48:56,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1249.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17297 states. [2021-08-21 11:48:56,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17297 to 5700. [2021-08-21 11:48:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:48:56,437 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:48:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:56,438 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:48:56,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:48:56,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:56,444 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:56,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:56,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-21 11:48:56,445 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash 93407460, now seen corresponding path program 123 times [2021-08-21 11:48:56,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:56,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660655419] [2021-08-21 11:48:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:56,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:56,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:56,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660655419] [2021-08-21 11:48:56,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660655419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:56,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:56,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:56,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98496716] [2021-08-21 11:48:56,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:56,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:56,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:56,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:56,840 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:58,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:58,380 INFO L93 Difference]: Finished difference Result 18070 states and 47765 transitions. [2021-08-21 11:48:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:48:58,381 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:48:58,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:58,420 INFO L225 Difference]: With dead ends: 18070 [2021-08-21 11:48:58,420 INFO L226 Difference]: Without dead ends: 18070 [2021-08-21 11:48:58,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1250.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:48:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18070 states. [2021-08-21 11:48:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18070 to 5684. [2021-08-21 11:48:58,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5682 states have (on average 2.7027455121436113) internal successors, (15357), 5683 states have internal predecessors, (15357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 15357 transitions. [2021-08-21 11:48:58,668 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 15357 transitions. Word has length 114 [2021-08-21 11:48:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:58,668 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 15357 transitions. [2021-08-21 11:48:58,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 15357 transitions. [2021-08-21 11:48:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:48:58,677 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:58,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:58,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-21 11:48:58,679 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:48:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1116934136, now seen corresponding path program 124 times [2021-08-21 11:48:58,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:58,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278346762] [2021-08-21 11:48:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:58,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:59,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:59,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278346762] [2021-08-21 11:48:59,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278346762] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:59,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:59,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:48:59,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253381045] [2021-08-21 11:48:59,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:48:59,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:48:59,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:48:59,179 INFO L87 Difference]: Start difference. First operand 5684 states and 15357 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:00,707 INFO L93 Difference]: Finished difference Result 21013 states and 55383 transitions. [2021-08-21 11:49:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:00,748 INFO L225 Difference]: With dead ends: 21013 [2021-08-21 11:49:00,748 INFO L226 Difference]: Without dead ends: 21013 [2021-08-21 11:49:00,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1317.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21013 states. [2021-08-21 11:49:00,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21013 to 5700. [2021-08-21 11:49:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:49:00,934 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:49:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:00,934 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:49:00,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:49:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:00,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:00,941 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:00,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-21 11:49:00,942 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:00,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2048952764, now seen corresponding path program 125 times [2021-08-21 11:49:00,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:00,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433029094] [2021-08-21 11:49:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:00,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:01,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:01,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433029094] [2021-08-21 11:49:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433029094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:01,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:01,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:01,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122614535] [2021-08-21 11:49:01,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:01,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:01,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:01,383 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:02,893 INFO L93 Difference]: Finished difference Result 18238 states and 48221 transitions. [2021-08-21 11:49:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:02,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:02,923 INFO L225 Difference]: With dead ends: 18238 [2021-08-21 11:49:02,924 INFO L226 Difference]: Without dead ends: 18238 [2021-08-21 11:49:02,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1273.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:02,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-08-21 11:49:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 5668. [2021-08-21 11:49:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5666 states have (on average 2.702259089304624) internal successors, (15311), 5667 states have internal predecessors, (15311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 15311 transitions. [2021-08-21 11:49:03,082 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 15311 transitions. Word has length 114 [2021-08-21 11:49:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:03,083 INFO L470 AbstractCegarLoop]: Abstraction has 5668 states and 15311 transitions. [2021-08-21 11:49:03,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 15311 transitions. [2021-08-21 11:49:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:03,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:03,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:03,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-21 11:49:03,089 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:03,090 INFO L82 PathProgramCache]: Analyzing trace with hash -984176382, now seen corresponding path program 126 times [2021-08-21 11:49:03,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:03,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970055618] [2021-08-21 11:49:03,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:03,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:03,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:03,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970055618] [2021-08-21 11:49:03,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970055618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:03,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:03,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:03,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704783971] [2021-08-21 11:49:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:03,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:03,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:03,492 INFO L87 Difference]: Start difference. First operand 5668 states and 15311 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:05,037 INFO L93 Difference]: Finished difference Result 17420 states and 46204 transitions. [2021-08-21 11:49:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:05,065 INFO L225 Difference]: With dead ends: 17420 [2021-08-21 11:49:05,065 INFO L226 Difference]: Without dead ends: 17420 [2021-08-21 11:49:05,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1263.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17420 states. [2021-08-21 11:49:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17420 to 5716. [2021-08-21 11:49:05,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5714 states have (on average 2.7037101855092756) internal successors, (15449), 5715 states have internal predecessors, (15449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 15449 transitions. [2021-08-21 11:49:05,216 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 15449 transitions. Word has length 114 [2021-08-21 11:49:05,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:05,216 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 15449 transitions. [2021-08-21 11:49:05,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:05,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 15449 transitions. [2021-08-21 11:49:05,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:05,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:05,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:05,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-21 11:49:05,223 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1916195010, now seen corresponding path program 127 times [2021-08-21 11:49:05,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:05,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232840618] [2021-08-21 11:49:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:05,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:05,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:05,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232840618] [2021-08-21 11:49:05,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232840618] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:05,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:05,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:05,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588020617] [2021-08-21 11:49:05,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:05,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:05,622 INFO L87 Difference]: Start difference. First operand 5716 states and 15449 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:07,096 INFO L93 Difference]: Finished difference Result 17320 states and 45922 transitions. [2021-08-21 11:49:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:07,096 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:07,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:07,124 INFO L225 Difference]: With dead ends: 17320 [2021-08-21 11:49:07,124 INFO L226 Difference]: Without dead ends: 17320 [2021-08-21 11:49:07,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1282.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:07,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17320 states. [2021-08-21 11:49:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17320 to 5700. [2021-08-21 11:49:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5698 states have (on average 2.703229203229203) internal successors, (15403), 5699 states have internal predecessors, (15403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 15403 transitions. [2021-08-21 11:49:07,280 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 15403 transitions. Word has length 114 [2021-08-21 11:49:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:07,281 INFO L470 AbstractCegarLoop]: Abstraction has 5700 states and 15403 transitions. [2021-08-21 11:49:07,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 15403 transitions. [2021-08-21 11:49:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:07,287 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:07,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:07,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-21 11:49:07,288 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:07,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1112930394, now seen corresponding path program 128 times [2021-08-21 11:49:07,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:07,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107856786] [2021-08-21 11:49:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:07,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:07,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:07,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107856786] [2021-08-21 11:49:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107856786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:07,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:07,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:07,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34557000] [2021-08-21 11:49:07,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:07,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:07,692 INFO L87 Difference]: Start difference. First operand 5700 states and 15403 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:09,165 INFO L93 Difference]: Finished difference Result 14863 states and 39588 transitions. [2021-08-21 11:49:09,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:09,166 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:09,191 INFO L225 Difference]: With dead ends: 14863 [2021-08-21 11:49:09,191 INFO L226 Difference]: Without dead ends: 14863 [2021-08-21 11:49:09,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1270.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:09,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14863 states. [2021-08-21 11:49:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14863 to 5572. [2021-08-21 11:49:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5570 states have (on average 2.6992818671454217) internal successors, (15035), 5571 states have internal predecessors, (15035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 15035 transitions. [2021-08-21 11:49:09,325 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 15035 transitions. Word has length 114 [2021-08-21 11:49:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:09,325 INFO L470 AbstractCegarLoop]: Abstraction has 5572 states and 15035 transitions. [2021-08-21 11:49:09,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 15035 transitions. [2021-08-21 11:49:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:09,332 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:09,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:09,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-21 11:49:09,332 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:09,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:09,332 INFO L82 PathProgramCache]: Analyzing trace with hash -469874460, now seen corresponding path program 129 times [2021-08-21 11:49:09,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:09,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691427018] [2021-08-21 11:49:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:09,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:09,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:09,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691427018] [2021-08-21 11:49:09,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691427018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:09,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:09,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269435748] [2021-08-21 11:49:09,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:09,842 INFO L87 Difference]: Start difference. First operand 5572 states and 15035 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:11,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:11,368 INFO L93 Difference]: Finished difference Result 17415 states and 46397 transitions. [2021-08-21 11:49:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:11,369 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:11,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:11,440 INFO L225 Difference]: With dead ends: 17415 [2021-08-21 11:49:11,440 INFO L226 Difference]: Without dead ends: 17415 [2021-08-21 11:49:11,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1297.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17415 states. [2021-08-21 11:49:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17415 to 5652. [2021-08-21 11:49:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5650 states have (on average 2.701769911504425) internal successors, (15265), 5651 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 15265 transitions. [2021-08-21 11:49:11,576 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 15265 transitions. Word has length 114 [2021-08-21 11:49:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:11,576 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 15265 transitions. [2021-08-21 11:49:11,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 15265 transitions. [2021-08-21 11:49:11,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:11,582 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:11,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:11,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-21 11:49:11,583 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash 601145028, now seen corresponding path program 130 times [2021-08-21 11:49:11,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:11,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56576363] [2021-08-21 11:49:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:11,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:11,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:11,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:11,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56576363] [2021-08-21 11:49:11,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56576363] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:11,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:11,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:11,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782854775] [2021-08-21 11:49:11,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:11,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:11,967 INFO L87 Difference]: Start difference. First operand 5652 states and 15265 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:13,464 INFO L93 Difference]: Finished difference Result 19843 states and 52754 transitions. [2021-08-21 11:49:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:13,495 INFO L225 Difference]: With dead ends: 19843 [2021-08-21 11:49:13,496 INFO L226 Difference]: Without dead ends: 19843 [2021-08-21 11:49:13,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1225.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:13,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19843 states. [2021-08-21 11:49:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19843 to 5668. [2021-08-21 11:49:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5666 states have (on average 2.702259089304624) internal successors, (15311), 5667 states have internal predecessors, (15311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 15311 transitions. [2021-08-21 11:49:13,736 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 15311 transitions. Word has length 114 [2021-08-21 11:49:13,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:13,736 INFO L470 AbstractCegarLoop]: Abstraction has 5668 states and 15311 transitions. [2021-08-21 11:49:13,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 15311 transitions. [2021-08-21 11:49:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:13,743 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:13,743 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:13,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-21 11:49:13,743 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash -637975070, now seen corresponding path program 131 times [2021-08-21 11:49:13,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:13,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275122409] [2021-08-21 11:49:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:13,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:14,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:14,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275122409] [2021-08-21 11:49:14,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275122409] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:14,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:14,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:14,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138254911] [2021-08-21 11:49:14,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:14,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:14,133 INFO L87 Difference]: Start difference. First operand 5668 states and 15311 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:15,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:15,686 INFO L93 Difference]: Finished difference Result 18243 states and 48274 transitions. [2021-08-21 11:49:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:15,716 INFO L225 Difference]: With dead ends: 18243 [2021-08-21 11:49:15,716 INFO L226 Difference]: Without dead ends: 18243 [2021-08-21 11:49:15,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1277.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18243 states. [2021-08-21 11:49:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18243 to 5620. [2021-08-21 11:49:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 5618 states have (on average 2.7007831968672127) internal successors, (15173), 5619 states have internal predecessors, (15173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 15173 transitions. [2021-08-21 11:49:15,878 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 15173 transitions. Word has length 114 [2021-08-21 11:49:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:15,878 INFO L470 AbstractCegarLoop]: Abstraction has 5620 states and 15173 transitions. [2021-08-21 11:49:15,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 15173 transitions. [2021-08-21 11:49:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:15,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:15,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:15,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-21 11:49:15,885 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:15,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1558347646, now seen corresponding path program 132 times [2021-08-21 11:49:15,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:15,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613222332] [2021-08-21 11:49:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:15,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:16,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:16,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613222332] [2021-08-21 11:49:16,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613222332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:16,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:16,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:16,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203422464] [2021-08-21 11:49:16,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:16,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:16,293 INFO L87 Difference]: Start difference. First operand 5620 states and 15173 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:17,794 INFO L93 Difference]: Finished difference Result 17521 states and 46563 transitions. [2021-08-21 11:49:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:17,821 INFO L225 Difference]: With dead ends: 17521 [2021-08-21 11:49:17,821 INFO L226 Difference]: Without dead ends: 17521 [2021-08-21 11:49:17,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1241.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:17,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17521 states. [2021-08-21 11:49:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17521 to 5652. [2021-08-21 11:49:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5650 states have (on average 2.701769911504425) internal successors, (15265), 5651 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 15265 transitions. [2021-08-21 11:49:17,982 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 15265 transitions. Word has length 114 [2021-08-21 11:49:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:17,982 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 15265 transitions. [2021-08-21 11:49:17,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 15265 transitions. [2021-08-21 11:49:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:17,988 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:17,988 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:17,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-21 11:49:17,989 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:17,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1497499552, now seen corresponding path program 133 times [2021-08-21 11:49:17,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:17,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223187232] [2021-08-21 11:49:17,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:17,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:18,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:18,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223187232] [2021-08-21 11:49:18,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223187232] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:18,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:18,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:18,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062506118] [2021-08-21 11:49:18,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:18,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:18,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:18,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:18,376 INFO L87 Difference]: Start difference. First operand 5652 states and 15265 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:19,848 INFO L93 Difference]: Finished difference Result 18294 states and 48295 transitions. [2021-08-21 11:49:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:19,848 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:19,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:19,877 INFO L225 Difference]: With dead ends: 18294 [2021-08-21 11:49:19,878 INFO L226 Difference]: Without dead ends: 18294 [2021-08-21 11:49:19,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1267.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:19,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18294 states. [2021-08-21 11:49:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18294 to 5636. [2021-08-21 11:49:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5634 states have (on average 2.7012779552715656) internal successors, (15219), 5635 states have internal predecessors, (15219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 15219 transitions. [2021-08-21 11:49:20,035 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 15219 transitions. Word has length 114 [2021-08-21 11:49:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:20,035 INFO L470 AbstractCegarLoop]: Abstraction has 5636 states and 15219 transitions. [2021-08-21 11:49:20,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 15219 transitions. [2021-08-21 11:49:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:20,041 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:20,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:20,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-21 11:49:20,042 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash 287157956, now seen corresponding path program 134 times [2021-08-21 11:49:20,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:20,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256553120] [2021-08-21 11:49:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:20,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:20,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:20,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256553120] [2021-08-21 11:49:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256553120] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:20,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:20,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654197724] [2021-08-21 11:49:20,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:20,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:20,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:20,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:20,445 INFO L87 Difference]: Start difference. First operand 5636 states and 15219 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:21,979 INFO L93 Difference]: Finished difference Result 17660 states and 46780 transitions. [2021-08-21 11:49:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:21,979 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:22,006 INFO L225 Difference]: With dead ends: 17660 [2021-08-21 11:49:22,007 INFO L226 Difference]: Without dead ends: 17660 [2021-08-21 11:49:22,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1289.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17660 states. [2021-08-21 11:49:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17660 to 5652. [2021-08-21 11:49:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5650 states have (on average 2.701769911504425) internal successors, (15265), 5651 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 15265 transitions. [2021-08-21 11:49:22,178 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 15265 transitions. Word has length 114 [2021-08-21 11:49:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:22,178 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 15265 transitions. [2021-08-21 11:49:22,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 15265 transitions. [2021-08-21 11:49:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:22,186 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:22,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:22,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-21 11:49:22,186 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:22,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:22,186 INFO L82 PathProgramCache]: Analyzing trace with hash -644860672, now seen corresponding path program 135 times [2021-08-21 11:49:22,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:22,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887320994] [2021-08-21 11:49:22,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:22,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:22,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:22,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887320994] [2021-08-21 11:49:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887320994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:22,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:22,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:22,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402755868] [2021-08-21 11:49:22,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:22,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:22,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:22,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:22,680 INFO L87 Difference]: Start difference. First operand 5652 states and 15265 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:24,198 INFO L93 Difference]: Finished difference Result 15167 states and 40332 transitions. [2021-08-21 11:49:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:24,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:24,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:24,222 INFO L225 Difference]: With dead ends: 15167 [2021-08-21 11:49:24,222 INFO L226 Difference]: Without dead ends: 15167 [2021-08-21 11:49:24,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1350.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15167 states. [2021-08-21 11:49:24,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15167 to 5588. [2021-08-21 11:49:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5586 states have (on average 2.699785177228786) internal successors, (15081), 5587 states have internal predecessors, (15081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 15081 transitions. [2021-08-21 11:49:24,368 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 15081 transitions. Word has length 114 [2021-08-21 11:49:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:24,368 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 15081 transitions. [2021-08-21 11:49:24,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:24,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 15081 transitions. [2021-08-21 11:49:24,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:24,375 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:24,375 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:24,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-21 11:49:24,376 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:24,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:24,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2016564764, now seen corresponding path program 136 times [2021-08-21 11:49:24,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:24,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060917744] [2021-08-21 11:49:24,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:24,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:24,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:24,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060917744] [2021-08-21 11:49:24,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060917744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:24,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:24,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:24,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690083323] [2021-08-21 11:49:24,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:24,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:24,773 INFO L87 Difference]: Start difference. First operand 5588 states and 15081 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:26,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:26,209 INFO L93 Difference]: Finished difference Result 15597 states and 41800 transitions. [2021-08-21 11:49:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:26,209 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:26,234 INFO L225 Difference]: With dead ends: 15597 [2021-08-21 11:49:26,234 INFO L226 Difference]: Without dead ends: 15597 [2021-08-21 11:49:26,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1217.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:26,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15597 states. [2021-08-21 11:49:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15597 to 5636. [2021-08-21 11:49:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5634 states have (on average 2.7012779552715656) internal successors, (15219), 5635 states have internal predecessors, (15219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 15219 transitions. [2021-08-21 11:49:26,399 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 15219 transitions. Word has length 114 [2021-08-21 11:49:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:26,399 INFO L470 AbstractCegarLoop]: Abstraction has 5636 states and 15219 transitions. [2021-08-21 11:49:26,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 15219 transitions. [2021-08-21 11:49:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:26,405 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:26,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:26,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-21 11:49:26,406 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:26,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:26,406 INFO L82 PathProgramCache]: Analyzing trace with hash -945545276, now seen corresponding path program 137 times [2021-08-21 11:49:26,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:26,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151732655] [2021-08-21 11:49:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:26,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:26,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:26,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151732655] [2021-08-21 11:49:26,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151732655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:26,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:26,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:26,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34441356] [2021-08-21 11:49:26,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:26,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:26,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:26,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:26,798 INFO L87 Difference]: Start difference. First operand 5636 states and 15219 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:28,282 INFO L93 Difference]: Finished difference Result 15669 states and 41932 transitions. [2021-08-21 11:49:28,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:28,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:28,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:28,310 INFO L225 Difference]: With dead ends: 15669 [2021-08-21 11:49:28,310 INFO L226 Difference]: Without dead ends: 15669 [2021-08-21 11:49:28,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1225.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:28,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2021-08-21 11:49:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 5652. [2021-08-21 11:49:28,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5650 states have (on average 2.701769911504425) internal successors, (15265), 5651 states have internal predecessors, (15265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 15265 transitions. [2021-08-21 11:49:28,462 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 15265 transitions. Word has length 114 [2021-08-21 11:49:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:28,462 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 15265 transitions. [2021-08-21 11:49:28,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 15265 transitions. [2021-08-21 11:49:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:28,469 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:28,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:28,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-21 11:49:28,469 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:28,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2110301922, now seen corresponding path program 138 times [2021-08-21 11:49:28,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:28,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207661870] [2021-08-21 11:49:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:28,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:28,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:28,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207661870] [2021-08-21 11:49:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207661870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:28,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:28,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619906691] [2021-08-21 11:49:28,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:28,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:28,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:28,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:28,898 INFO L87 Difference]: Start difference. First operand 5652 states and 15265 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:30,345 INFO L93 Difference]: Finished difference Result 15079 states and 40010 transitions. [2021-08-21 11:49:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:30,370 INFO L225 Difference]: With dead ends: 15079 [2021-08-21 11:49:30,370 INFO L226 Difference]: Without dead ends: 15079 [2021-08-21 11:49:30,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:30,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15079 states. [2021-08-21 11:49:30,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15079 to 5604. [2021-08-21 11:49:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 5602 states have (on average 2.700285612281328) internal successors, (15127), 5603 states have internal predecessors, (15127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 15127 transitions. [2021-08-21 11:49:30,510 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 15127 transitions. Word has length 114 [2021-08-21 11:49:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:30,510 INFO L470 AbstractCegarLoop]: Abstraction has 5604 states and 15127 transitions. [2021-08-21 11:49:30,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 15127 transitions. [2021-08-21 11:49:30,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:30,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:30,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:30,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-21 11:49:30,517 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:30,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2022920646, now seen corresponding path program 139 times [2021-08-21 11:49:30,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:30,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654012683] [2021-08-21 11:49:30,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:30,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:30,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:30,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654012683] [2021-08-21 11:49:30,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654012683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:30,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:30,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:30,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23628304] [2021-08-21 11:49:30,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:30,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:30,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:30,920 INFO L87 Difference]: Start difference. First operand 5604 states and 15127 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:32,407 INFO L93 Difference]: Finished difference Result 12067 states and 32193 transitions. [2021-08-21 11:49:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:32,425 INFO L225 Difference]: With dead ends: 12067 [2021-08-21 11:49:32,425 INFO L226 Difference]: Without dead ends: 12067 [2021-08-21 11:49:32,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1244.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12067 states. [2021-08-21 11:49:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12067 to 5540. [2021-08-21 11:49:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 5538 states have (on average 2.6982665222101843) internal successors, (14943), 5539 states have internal predecessors, (14943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 14943 transitions. [2021-08-21 11:49:32,538 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 14943 transitions. Word has length 114 [2021-08-21 11:49:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:32,539 INFO L470 AbstractCegarLoop]: Abstraction has 5540 states and 14943 transitions. [2021-08-21 11:49:32,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 14943 transitions. [2021-08-21 11:49:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:32,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:32,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:32,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-21 11:49:32,545 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:32,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:32,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1665205474, now seen corresponding path program 140 times [2021-08-21 11:49:32,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:32,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137988303] [2021-08-21 11:49:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:32,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:32,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:32,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:32,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137988303] [2021-08-21 11:49:32,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137988303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:32,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:32,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:32,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627052655] [2021-08-21 11:49:32,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:32,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:32,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:32,944 INFO L87 Difference]: Start difference. First operand 5540 states and 14943 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:34,376 INFO L93 Difference]: Finished difference Result 10716 states and 28478 transitions. [2021-08-21 11:49:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:34,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:34,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:34,392 INFO L225 Difference]: With dead ends: 10716 [2021-08-21 11:49:34,393 INFO L226 Difference]: Without dead ends: 10716 [2021-08-21 11:49:34,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1243.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2021-08-21 11:49:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 5696. [2021-08-21 11:49:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:34,506 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:34,506 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:34,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:34,512 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:34,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:34,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-21 11:49:34,512 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1558742334, now seen corresponding path program 141 times [2021-08-21 11:49:34,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:34,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188003076] [2021-08-21 11:49:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:34,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:34,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:34,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188003076] [2021-08-21 11:49:34,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188003076] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:34,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:34,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:34,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456250133] [2021-08-21 11:49:34,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:34,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:34,926 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:36,365 INFO L93 Difference]: Finished difference Result 13144 states and 34835 transitions. [2021-08-21 11:49:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:36,423 INFO L225 Difference]: With dead ends: 13144 [2021-08-21 11:49:36,423 INFO L226 Difference]: Without dead ends: 13144 [2021-08-21 11:49:36,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1255.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2021-08-21 11:49:36,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 5712. [2021-08-21 11:49:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5710 states have (on average 2.7038528896672505) internal successors, (15439), 5711 states have internal predecessors, (15439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:36,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 15439 transitions. [2021-08-21 11:49:36,530 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 15439 transitions. Word has length 114 [2021-08-21 11:49:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:36,530 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 15439 transitions. [2021-08-21 11:49:36,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 15439 transitions. [2021-08-21 11:49:36,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:36,537 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:36,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:36,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-21 11:49:36,537 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:36,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:36,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1497104864, now seen corresponding path program 142 times [2021-08-21 11:49:36,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:36,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223080177] [2021-08-21 11:49:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:36,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:36,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:36,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223080177] [2021-08-21 11:49:36,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223080177] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:36,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:36,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:36,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427035673] [2021-08-21 11:49:36,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:36,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:36,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:36,942 INFO L87 Difference]: Start difference. First operand 5712 states and 15439 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:38,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:38,465 INFO L93 Difference]: Finished difference Result 11544 states and 30355 transitions. [2021-08-21 11:49:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:38,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:38,482 INFO L225 Difference]: With dead ends: 11544 [2021-08-21 11:49:38,482 INFO L226 Difference]: Without dead ends: 11544 [2021-08-21 11:49:38,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1317.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11544 states. [2021-08-21 11:49:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11544 to 5664. [2021-08-21 11:49:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5662 states have (on average 2.7024019780996116) internal successors, (15301), 5663 states have internal predecessors, (15301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 15301 transitions. [2021-08-21 11:49:38,592 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 15301 transitions. Word has length 114 [2021-08-21 11:49:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:38,592 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 15301 transitions. [2021-08-21 11:49:38,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 15301 transitions. [2021-08-21 11:49:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:38,599 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:38,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:38,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-21 11:49:38,599 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash 576732288, now seen corresponding path program 143 times [2021-08-21 11:49:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:38,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591983325] [2021-08-21 11:49:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:38,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:39,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:39,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591983325] [2021-08-21 11:49:39,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591983325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:39,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:39,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:39,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250947822] [2021-08-21 11:49:39,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:39,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:39,013 INFO L87 Difference]: Start difference. First operand 5664 states and 15301 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:40,474 INFO L93 Difference]: Finished difference Result 14364 states and 37802 transitions. [2021-08-21 11:49:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:40,499 INFO L225 Difference]: With dead ends: 14364 [2021-08-21 11:49:40,499 INFO L226 Difference]: Without dead ends: 14364 [2021-08-21 11:49:40,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1230.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14364 states. [2021-08-21 11:49:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14364 to 5696. [2021-08-21 11:49:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:40,641 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:40,641 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:40,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:40,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:40,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:40,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-21 11:49:40,648 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash -662387810, now seen corresponding path program 144 times [2021-08-21 11:49:40,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:40,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302785831] [2021-08-21 11:49:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:40,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:41,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:41,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:41,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302785831] [2021-08-21 11:49:41,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302785831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:41,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:41,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:41,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848842971] [2021-08-21 11:49:41,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:41,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:41,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:41,084 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:42,595 INFO L93 Difference]: Finished difference Result 15137 states and 39534 transitions. [2021-08-21 11:49:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:42,618 INFO L225 Difference]: With dead ends: 15137 [2021-08-21 11:49:42,618 INFO L226 Difference]: Without dead ends: 15137 [2021-08-21 11:49:42,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1283.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15137 states. [2021-08-21 11:49:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15137 to 5680. [2021-08-21 11:49:42,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5678 states have (on average 2.7028883409651288) internal successors, (15347), 5679 states have internal predecessors, (15347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 15347 transitions. [2021-08-21 11:49:42,754 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 15347 transitions. Word has length 114 [2021-08-21 11:49:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:42,754 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 15347 transitions. [2021-08-21 11:49:42,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 15347 transitions. [2021-08-21 11:49:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:42,761 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:42,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:42,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-21 11:49:42,761 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:42,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1872729406, now seen corresponding path program 145 times [2021-08-21 11:49:42,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:42,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579000213] [2021-08-21 11:49:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:42,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:43,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:43,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579000213] [2021-08-21 11:49:43,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579000213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:43,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:43,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:43,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853814908] [2021-08-21 11:49:43,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:43,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:43,151 INFO L87 Difference]: Start difference. First operand 5680 states and 15347 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:44,615 INFO L93 Difference]: Finished difference Result 14503 states and 38019 transitions. [2021-08-21 11:49:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:44,615 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:44,640 INFO L225 Difference]: With dead ends: 14503 [2021-08-21 11:49:44,640 INFO L226 Difference]: Without dead ends: 14503 [2021-08-21 11:49:44,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1282.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14503 states. [2021-08-21 11:49:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 5696. [2021-08-21 11:49:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:44,782 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:44,782 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:44,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:44,789 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:44,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:44,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-21 11:49:44,789 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1490219262, now seen corresponding path program 146 times [2021-08-21 11:49:44,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:44,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104864498] [2021-08-21 11:49:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:44,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:45,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:45,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104864498] [2021-08-21 11:49:45,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104864498] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:45,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:45,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:45,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383973621] [2021-08-21 11:49:45,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:45,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:45,194 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:46,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:46,622 INFO L93 Difference]: Finished difference Result 11728 states and 30857 transitions. [2021-08-21 11:49:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:46,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:46,640 INFO L225 Difference]: With dead ends: 11728 [2021-08-21 11:49:46,640 INFO L226 Difference]: Without dead ends: 11728 [2021-08-21 11:49:46,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1275.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11728 states. [2021-08-21 11:49:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11728 to 5632. [2021-08-21 11:49:46,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5632 states, 5630 states have (on average 2.7014209591474243) internal successors, (15209), 5631 states have internal predecessors, (15209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:46,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5632 states to 5632 states and 15209 transitions. [2021-08-21 11:49:46,748 INFO L78 Accepts]: Start accepts. Automaton has 5632 states and 15209 transitions. Word has length 114 [2021-08-21 11:49:46,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:46,748 INFO L470 AbstractCegarLoop]: Abstraction has 5632 states and 15209 transitions. [2021-08-21 11:49:46,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5632 states and 15209 transitions. [2021-08-21 11:49:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:46,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:46,755 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:46,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-21 11:49:46,755 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:46,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1665380444, now seen corresponding path program 147 times [2021-08-21 11:49:46,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:46,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326277915] [2021-08-21 11:49:46,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:46,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:47,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:47,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326277915] [2021-08-21 11:49:47,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326277915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:47,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:47,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:47,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997948833] [2021-08-21 11:49:47,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:47,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:47,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:47,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:47,145 INFO L87 Difference]: Start difference. First operand 5632 states and 15209 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:48,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:48,578 INFO L93 Difference]: Finished difference Result 14892 states and 39272 transitions. [2021-08-21 11:49:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:48,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:48,602 INFO L225 Difference]: With dead ends: 14892 [2021-08-21 11:49:48,602 INFO L226 Difference]: Without dead ends: 14892 [2021-08-21 11:49:48,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14892 states. [2021-08-21 11:49:48,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14892 to 5696. [2021-08-21 11:49:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:48,737 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:48,737 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:48,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:48,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:48,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:48,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:48,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-21 11:49:48,768 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1390466754, now seen corresponding path program 148 times [2021-08-21 11:49:48,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:48,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120444884] [2021-08-21 11:49:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:48,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:49,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:49,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120444884] [2021-08-21 11:49:49,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120444884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:49,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:49,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:49,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617548711] [2021-08-21 11:49:49,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:49,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:49,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:49,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:49,151 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:50,676 INFO L93 Difference]: Finished difference Result 15665 states and 41004 transitions. [2021-08-21 11:49:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:50,702 INFO L225 Difference]: With dead ends: 15665 [2021-08-21 11:49:50,703 INFO L226 Difference]: Without dead ends: 15665 [2021-08-21 11:49:50,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1257.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15665 states. [2021-08-21 11:49:50,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15665 to 5680. [2021-08-21 11:49:50,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5678 states have (on average 2.7028883409651288) internal successors, (15347), 5679 states have internal predecessors, (15347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 15347 transitions. [2021-08-21 11:49:50,846 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 15347 transitions. Word has length 114 [2021-08-21 11:49:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:50,846 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 15347 transitions. [2021-08-21 11:49:50,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 15347 transitions. [2021-08-21 11:49:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:50,855 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:50,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:50,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-21 11:49:50,855 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash 180125158, now seen corresponding path program 149 times [2021-08-21 11:49:50,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:50,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313744881] [2021-08-21 11:49:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:50,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:51,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:51,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313744881] [2021-08-21 11:49:51,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313744881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:51,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:51,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:51,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339398509] [2021-08-21 11:49:51,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:51,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:51,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:51,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:51,307 INFO L87 Difference]: Start difference. First operand 5680 states and 15347 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:52,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:52,846 INFO L93 Difference]: Finished difference Result 18608 states and 48622 transitions. [2021-08-21 11:49:52,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:52,847 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:52,875 INFO L225 Difference]: With dead ends: 18608 [2021-08-21 11:49:52,875 INFO L226 Difference]: Without dead ends: 18608 [2021-08-21 11:49:52,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1286.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18608 states. [2021-08-21 11:49:53,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18608 to 5696. [2021-08-21 11:49:53,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:53,047 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:53,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:53,047 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:53,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:53,054 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:53,054 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:53,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-08-21 11:49:53,054 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash -751893470, now seen corresponding path program 150 times [2021-08-21 11:49:53,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:53,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739246670] [2021-08-21 11:49:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:53,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:53,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:53,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739246670] [2021-08-21 11:49:53,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739246670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:53,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:53,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:53,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786613118] [2021-08-21 11:49:53,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:53,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:53,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:53,478 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:55,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:55,003 INFO L93 Difference]: Finished difference Result 15833 states and 41460 transitions. [2021-08-21 11:49:55,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:55,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:55,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:55,028 INFO L225 Difference]: With dead ends: 15833 [2021-08-21 11:49:55,028 INFO L226 Difference]: Without dead ends: 15833 [2021-08-21 11:49:55,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1315.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15833 states. [2021-08-21 11:49:55,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15833 to 5664. [2021-08-21 11:49:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5662 states have (on average 2.7024019780996116) internal successors, (15301), 5663 states have internal predecessors, (15301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 15301 transitions. [2021-08-21 11:49:55,174 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 15301 transitions. Word has length 114 [2021-08-21 11:49:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:55,175 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 15301 transitions. [2021-08-21 11:49:55,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 15301 transitions. [2021-08-21 11:49:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:55,181 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:55,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:55,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-08-21 11:49:55,181 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:55,182 INFO L82 PathProgramCache]: Analyzing trace with hash 312882912, now seen corresponding path program 151 times [2021-08-21 11:49:55,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:55,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353014098] [2021-08-21 11:49:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:55,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:55,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:55,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353014098] [2021-08-21 11:49:55,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353014098] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:55,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:55,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:55,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979701268] [2021-08-21 11:49:55,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:55,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:55,588 INFO L87 Difference]: Start difference. First operand 5664 states and 15301 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:57,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:57,113 INFO L93 Difference]: Finished difference Result 15015 states and 39443 transitions. [2021-08-21 11:49:57,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:57,138 INFO L225 Difference]: With dead ends: 15015 [2021-08-21 11:49:57,139 INFO L226 Difference]: Without dead ends: 15015 [2021-08-21 11:49:57,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1297.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15015 states. [2021-08-21 11:49:57,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15015 to 5712. [2021-08-21 11:49:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5712 states, 5710 states have (on average 2.7038528896672505) internal successors, (15439), 5711 states have internal predecessors, (15439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5712 states to 5712 states and 15439 transitions. [2021-08-21 11:49:57,291 INFO L78 Accepts]: Start accepts. Automaton has 5712 states and 15439 transitions. Word has length 114 [2021-08-21 11:49:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:57,291 INFO L470 AbstractCegarLoop]: Abstraction has 5712 states and 15439 transitions. [2021-08-21 11:49:57,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5712 states and 15439 transitions. [2021-08-21 11:49:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:57,298 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:57,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:57,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-08-21 11:49:57,298 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:57,298 INFO L82 PathProgramCache]: Analyzing trace with hash -619135716, now seen corresponding path program 152 times [2021-08-21 11:49:57,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:57,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776195506] [2021-08-21 11:49:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:57,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:57,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:57,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776195506] [2021-08-21 11:49:57,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776195506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:57,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:57,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:57,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468281897] [2021-08-21 11:49:57,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:57,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:57,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:57,709 INFO L87 Difference]: Start difference. First operand 5712 states and 15439 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:59,291 INFO L93 Difference]: Finished difference Result 14915 states and 39161 transitions. [2021-08-21 11:49:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:49:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:49:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:59,316 INFO L225 Difference]: With dead ends: 14915 [2021-08-21 11:49:59,316 INFO L226 Difference]: Without dead ends: 14915 [2021-08-21 11:49:59,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1355.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:49:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14915 states. [2021-08-21 11:49:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14915 to 5696. [2021-08-21 11:49:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5696 states, 5694 states have (on average 2.703371970495258) internal successors, (15393), 5695 states have internal predecessors, (15393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5696 states to 5696 states and 15393 transitions. [2021-08-21 11:49:59,461 INFO L78 Accepts]: Start accepts. Automaton has 5696 states and 15393 transitions. Word has length 114 [2021-08-21 11:49:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:59,461 INFO L470 AbstractCegarLoop]: Abstraction has 5696 states and 15393 transitions. [2021-08-21 11:49:59,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5696 states and 15393 transitions. [2021-08-21 11:49:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:49:59,468 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:59,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:59,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-08-21 11:49:59,468 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:49:59,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:59,469 INFO L82 PathProgramCache]: Analyzing trace with hash 184128900, now seen corresponding path program 153 times [2021-08-21 11:49:59,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:59,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928048754] [2021-08-21 11:49:59,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:59,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:59,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:59,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928048754] [2021-08-21 11:49:59,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928048754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:59,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:59,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:49:59,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593413144] [2021-08-21 11:49:59,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:49:59,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:49:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:49:59,884 INFO L87 Difference]: Start difference. First operand 5696 states and 15393 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:01,378 INFO L93 Difference]: Finished difference Result 12176 states and 32113 transitions. [2021-08-21 11:50:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:01,378 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:01,398 INFO L225 Difference]: With dead ends: 12176 [2021-08-21 11:50:01,398 INFO L226 Difference]: Without dead ends: 12176 [2021-08-21 11:50:01,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1319.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2021-08-21 11:50:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 5568. [2021-08-21 11:50:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5566 states have (on average 2.699425080848006) internal successors, (15025), 5567 states have internal predecessors, (15025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 15025 transitions. [2021-08-21 11:50:01,606 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 15025 transitions. Word has length 114 [2021-08-21 11:50:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:01,607 INFO L470 AbstractCegarLoop]: Abstraction has 5568 states and 15025 transitions. [2021-08-21 11:50:01,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 15025 transitions. [2021-08-21 11:50:01,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:01,613 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:01,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:01,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-08-21 11:50:01,613 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:01,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:01,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1265483270, now seen corresponding path program 154 times [2021-08-21 11:50:01,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:01,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459087625] [2021-08-21 11:50:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:01,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:02,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:02,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459087625] [2021-08-21 11:50:02,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459087625] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:02,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:02,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:02,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635148612] [2021-08-21 11:50:02,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:02,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:02,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:02,022 INFO L87 Difference]: Start difference. First operand 5568 states and 15025 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:03,428 INFO L93 Difference]: Finished difference Result 10230 states and 27104 transitions. [2021-08-21 11:50:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:03,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:03,444 INFO L225 Difference]: With dead ends: 10230 [2021-08-21 11:50:03,445 INFO L226 Difference]: Without dead ends: 10230 [2021-08-21 11:50:03,445 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10230 states. [2021-08-21 11:50:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10230 to 5646. [2021-08-21 11:50:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:50:03,553 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:50:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:03,553 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:50:03,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:50:03,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:03,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:03,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:03,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-08-21 11:50:03,560 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 26363172, now seen corresponding path program 155 times [2021-08-21 11:50:03,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:03,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421407202] [2021-08-21 11:50:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:03,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:03,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:03,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421407202] [2021-08-21 11:50:03,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421407202] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:03,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:03,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:03,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470440595] [2021-08-21 11:50:03,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:03,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:03,987 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:05,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:05,504 INFO L93 Difference]: Finished difference Result 11003 states and 28836 transitions. [2021-08-21 11:50:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:05,504 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:05,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:05,521 INFO L225 Difference]: With dead ends: 11003 [2021-08-21 11:50:05,521 INFO L226 Difference]: Without dead ends: 11003 [2021-08-21 11:50:05,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1329.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11003 states. [2021-08-21 11:50:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11003 to 5630. [2021-08-21 11:50:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.701492537313433) internal successors, (15204), 5629 states have internal predecessors, (15204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15204 transitions. [2021-08-21 11:50:05,642 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15204 transitions. Word has length 114 [2021-08-21 11:50:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:05,643 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15204 transitions. [2021-08-21 11:50:05,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15204 transitions. [2021-08-21 11:50:05,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:05,651 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:05,651 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:05,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-08-21 11:50:05,651 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:05,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1183978424, now seen corresponding path program 156 times [2021-08-21 11:50:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:05,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476509034] [2021-08-21 11:50:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:05,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:06,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:06,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476509034] [2021-08-21 11:50:06,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476509034] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:06,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:06,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:06,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921674139] [2021-08-21 11:50:06,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:06,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:06,068 INFO L87 Difference]: Start difference. First operand 5630 states and 15204 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:07,596 INFO L93 Difference]: Finished difference Result 13946 states and 36454 transitions. [2021-08-21 11:50:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:07,618 INFO L225 Difference]: With dead ends: 13946 [2021-08-21 11:50:07,618 INFO L226 Difference]: Without dead ends: 13946 [2021-08-21 11:50:07,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1343.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13946 states. [2021-08-21 11:50:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13946 to 5646. [2021-08-21 11:50:07,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:50:07,749 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:50:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:07,749 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:50:07,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:50:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:07,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:07,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:07,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-08-21 11:50:07,756 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:07,757 INFO L82 PathProgramCache]: Analyzing trace with hash -2115997052, now seen corresponding path program 157 times [2021-08-21 11:50:07,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:07,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784063239] [2021-08-21 11:50:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:07,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:08,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:08,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784063239] [2021-08-21 11:50:08,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784063239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:08,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:08,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:08,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945194070] [2021-08-21 11:50:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:08,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:08,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:08,164 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:09,656 INFO L93 Difference]: Finished difference Result 11171 states and 29292 transitions. [2021-08-21 11:50:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:09,656 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:09,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:09,673 INFO L225 Difference]: With dead ends: 11171 [2021-08-21 11:50:09,673 INFO L226 Difference]: Without dead ends: 11171 [2021-08-21 11:50:09,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1282.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:09,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11171 states. [2021-08-21 11:50:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11171 to 5614. [2021-08-21 11:50:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5612 states have (on average 2.700997861724875) internal successors, (15158), 5613 states have internal predecessors, (15158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 15158 transitions. [2021-08-21 11:50:09,788 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 15158 transitions. Word has length 114 [2021-08-21 11:50:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:09,789 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 15158 transitions. [2021-08-21 11:50:09,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 15158 transitions. [2021-08-21 11:50:09,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:09,796 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:09,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:09,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-08-21 11:50:09,797 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:09,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:09,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1051220670, now seen corresponding path program 158 times [2021-08-21 11:50:09,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:09,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145644292] [2021-08-21 11:50:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:09,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:10,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:10,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145644292] [2021-08-21 11:50:10,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145644292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:10,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:10,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:10,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912029757] [2021-08-21 11:50:10,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:10,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:10,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:10,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:10,195 INFO L87 Difference]: Start difference. First operand 5614 states and 15158 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:11,657 INFO L93 Difference]: Finished difference Result 14426 states and 37786 transitions. [2021-08-21 11:50:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:11,682 INFO L225 Difference]: With dead ends: 14426 [2021-08-21 11:50:11,682 INFO L226 Difference]: Without dead ends: 14426 [2021-08-21 11:50:11,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1271.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14426 states. [2021-08-21 11:50:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14426 to 5662. [2021-08-21 11:50:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.7024734982332155) internal successors, (15296), 5661 states have internal predecessors, (15296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15296 transitions. [2021-08-21 11:50:11,851 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15296 transitions. Word has length 114 [2021-08-21 11:50:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:11,851 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15296 transitions. [2021-08-21 11:50:11,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15296 transitions. [2021-08-21 11:50:11,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:11,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:11,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:11,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-08-21 11:50:11,858 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:11,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:11,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1983239298, now seen corresponding path program 159 times [2021-08-21 11:50:11,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:11,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114686669] [2021-08-21 11:50:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:11,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:12,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:12,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114686669] [2021-08-21 11:50:12,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114686669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:12,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:12,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:12,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053216829] [2021-08-21 11:50:12,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:12,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:12,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:12,269 INFO L87 Difference]: Start difference. First operand 5662 states and 15296 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:13,740 INFO L93 Difference]: Finished difference Result 14326 states and 37504 transitions. [2021-08-21 11:50:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:13,741 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:13,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:13,765 INFO L225 Difference]: With dead ends: 14326 [2021-08-21 11:50:13,765 INFO L226 Difference]: Without dead ends: 14326 [2021-08-21 11:50:13,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1279.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14326 states. [2021-08-21 11:50:13,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14326 to 5646. [2021-08-21 11:50:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.70198440822112) internal successors, (15250), 5645 states have internal predecessors, (15250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15250 transitions. [2021-08-21 11:50:13,907 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15250 transitions. Word has length 114 [2021-08-21 11:50:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:13,907 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15250 transitions. [2021-08-21 11:50:13,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15250 transitions. [2021-08-21 11:50:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:13,914 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:13,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:13,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-08-21 11:50:13,914 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1179974682, now seen corresponding path program 160 times [2021-08-21 11:50:13,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:13,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076322479] [2021-08-21 11:50:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:13,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:14,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:14,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076322479] [2021-08-21 11:50:14,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076322479] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:14,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:14,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:14,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116276302] [2021-08-21 11:50:14,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:14,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:14,352 INFO L87 Difference]: Start difference. First operand 5646 states and 15250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:15,810 INFO L93 Difference]: Finished difference Result 11587 states and 30456 transitions. [2021-08-21 11:50:15,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:15,810 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:15,827 INFO L225 Difference]: With dead ends: 11587 [2021-08-21 11:50:15,827 INFO L226 Difference]: Without dead ends: 11587 [2021-08-21 11:50:15,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1313.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11587 states. [2021-08-21 11:50:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11587 to 5582. [2021-08-21 11:50:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5580 states have (on average 2.7) internal successors, (15066), 5581 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 15066 transitions. [2021-08-21 11:50:15,947 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 15066 transitions. Word has length 114 [2021-08-21 11:50:15,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 5582 states and 15066 transitions. [2021-08-21 11:50:15,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,948 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 15066 transitions. [2021-08-21 11:50:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:15,954 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:15,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:15,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-08-21 11:50:15,954 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:15,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:15,954 INFO L82 PathProgramCache]: Analyzing trace with hash 352550496, now seen corresponding path program 161 times [2021-08-21 11:50:15,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:15,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093371536] [2021-08-21 11:50:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:15,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:16,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:16,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093371536] [2021-08-21 11:50:16,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093371536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:16,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:16,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:16,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423428023] [2021-08-21 11:50:16,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:16,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:16,368 INFO L87 Difference]: Start difference. First operand 5582 states and 15066 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:17,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:17,860 INFO L93 Difference]: Finished difference Result 10321 states and 27183 transitions. [2021-08-21 11:50:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:17,860 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:17,876 INFO L225 Difference]: With dead ends: 10321 [2021-08-21 11:50:17,876 INFO L226 Difference]: Without dead ends: 10321 [2021-08-21 11:50:17,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1292.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10321 states. [2021-08-21 11:50:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10321 to 5644. [2021-08-21 11:50:17,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5644 states, 5642 states have (on average 2.7020560085076215) internal successors, (15245), 5643 states have internal predecessors, (15245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5644 states to 5644 states and 15245 transitions. [2021-08-21 11:50:17,980 INFO L78 Accepts]: Start accepts. Automaton has 5644 states and 15245 transitions. Word has length 114 [2021-08-21 11:50:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:17,980 INFO L470 AbstractCegarLoop]: Abstraction has 5644 states and 15245 transitions. [2021-08-21 11:50:17,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5644 states and 15245 transitions. [2021-08-21 11:50:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:17,986 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:17,986 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:17,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-08-21 11:50:17,986 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:17,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:17,987 INFO L82 PathProgramCache]: Analyzing trace with hash -579468132, now seen corresponding path program 162 times [2021-08-21 11:50:17,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:17,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382864601] [2021-08-21 11:50:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:17,987 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:18,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:18,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382864601] [2021-08-21 11:50:18,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382864601] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:18,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:18,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:18,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524281408] [2021-08-21 11:50:18,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:18,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:18,398 INFO L87 Difference]: Start difference. First operand 5644 states and 15245 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:19,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:19,846 INFO L93 Difference]: Finished difference Result 10221 states and 26901 transitions. [2021-08-21 11:50:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:19,846 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:19,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:19,861 INFO L225 Difference]: With dead ends: 10221 [2021-08-21 11:50:19,861 INFO L226 Difference]: Without dead ends: 10221 [2021-08-21 11:50:19,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1284.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:19,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10221 states. [2021-08-21 11:50:19,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10221 to 5628. [2021-08-21 11:50:19,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5628 states, 5626 states have (on average 2.701564166370423) internal successors, (15199), 5627 states have internal predecessors, (15199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 15199 transitions. [2021-08-21 11:50:19,966 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 15199 transitions. Word has length 114 [2021-08-21 11:50:19,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:19,966 INFO L470 AbstractCegarLoop]: Abstraction has 5628 states and 15199 transitions. [2021-08-21 11:50:19,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 15199 transitions. [2021-08-21 11:50:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:19,974 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:19,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-08-21 11:50:19,975 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:19,975 INFO L82 PathProgramCache]: Analyzing trace with hash 223796484, now seen corresponding path program 163 times [2021-08-21 11:50:19,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:19,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788874672] [2021-08-21 11:50:19,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:19,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:20,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:20,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788874672] [2021-08-21 11:50:20,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788874672] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:20,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:20,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:20,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452637002] [2021-08-21 11:50:20,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:20,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:20,557 INFO L87 Difference]: Start difference. First operand 5628 states and 15199 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:22,092 INFO L93 Difference]: Finished difference Result 10509 states and 27729 transitions. [2021-08-21 11:50:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:22,106 INFO L225 Difference]: With dead ends: 10509 [2021-08-21 11:50:22,107 INFO L226 Difference]: Without dead ends: 10509 [2021-08-21 11:50:22,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1369.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10509 states. [2021-08-21 11:50:22,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10509 to 5596. [2021-08-21 11:50:22,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5594 states have (on average 2.700572041473007) internal successors, (15107), 5595 states have internal predecessors, (15107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:22,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 15107 transitions. [2021-08-21 11:50:22,237 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 15107 transitions. Word has length 114 [2021-08-21 11:50:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:22,237 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 15107 transitions. [2021-08-21 11:50:22,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 15107 transitions. [2021-08-21 11:50:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:22,244 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:22,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:22,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-08-21 11:50:22,244 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:22,244 INFO L82 PathProgramCache]: Analyzing trace with hash -462693402, now seen corresponding path program 164 times [2021-08-21 11:50:22,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:22,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683971968] [2021-08-21 11:50:22,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:22,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:22,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:22,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683971968] [2021-08-21 11:50:22,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683971968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:22,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:22,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:22,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262994190] [2021-08-21 11:50:22,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:22,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:22,665 INFO L87 Difference]: Start difference. First operand 5596 states and 15107 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:24,067 INFO L93 Difference]: Finished difference Result 7354 states and 19517 transitions. [2021-08-21 11:50:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:24,078 INFO L225 Difference]: With dead ends: 7354 [2021-08-21 11:50:24,079 INFO L226 Difference]: Without dead ends: 7354 [2021-08-21 11:50:24,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1251.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2021-08-21 11:50:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 5680. [2021-08-21 11:50:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5680 states, 5678 states have (on average 2.703945051074322) internal successors, (15353), 5679 states have internal predecessors, (15353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5680 states to 5680 states and 15353 transitions. [2021-08-21 11:50:24,169 INFO L78 Accepts]: Start accepts. Automaton has 5680 states and 15353 transitions. Word has length 114 [2021-08-21 11:50:24,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:24,170 INFO L470 AbstractCegarLoop]: Abstraction has 5680 states and 15353 transitions. [2021-08-21 11:50:24,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5680 states and 15353 transitions. [2021-08-21 11:50:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:24,176 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:24,176 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:24,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-08-21 11:50:24,176 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash 754753500, now seen corresponding path program 165 times [2021-08-21 11:50:24,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:24,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324162670] [2021-08-21 11:50:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:24,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:24,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:24,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324162670] [2021-08-21 11:50:24,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324162670] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:24,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:24,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:50:24,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584819518] [2021-08-21 11:50:24,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:50:24,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:50:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:50:24,673 INFO L87 Difference]: Start difference. First operand 5680 states and 15353 transitions. Second operand has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:25,780 INFO L93 Difference]: Finished difference Result 6895 states and 17973 transitions. [2021-08-21 11:50:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-21 11:50:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:25,790 INFO L225 Difference]: With dead ends: 6895 [2021-08-21 11:50:25,791 INFO L226 Difference]: Without dead ends: 6895 [2021-08-21 11:50:25,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 954.0ms TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2021-08-21 11:50:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2021-08-21 11:50:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 5614. [2021-08-21 11:50:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5612 states have (on average 2.7081254454739843) internal successors, (15198), 5613 states have internal predecessors, (15198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:25,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 15198 transitions. [2021-08-21 11:50:25,880 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 15198 transitions. Word has length 114 [2021-08-21 11:50:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:25,880 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 15198 transitions. [2021-08-21 11:50:25,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.0) internal successors, (114), 19 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:25,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 15198 transitions. [2021-08-21 11:50:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:25,886 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:25,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:25,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-08-21 11:50:25,886 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1759011854, now seen corresponding path program 166 times [2021-08-21 11:50:25,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:25,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113348832] [2021-08-21 11:50:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:25,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:26,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:26,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113348832] [2021-08-21 11:50:26,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113348832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:26,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:26,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:26,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64076532] [2021-08-21 11:50:26,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:26,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:26,297 INFO L87 Difference]: Start difference. First operand 5614 states and 15198 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:27,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:27,780 INFO L93 Difference]: Finished difference Result 13610 states and 36330 transitions. [2021-08-21 11:50:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:27,780 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:27,802 INFO L225 Difference]: With dead ends: 13610 [2021-08-21 11:50:27,802 INFO L226 Difference]: Without dead ends: 13610 [2021-08-21 11:50:27,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1264.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13610 states. [2021-08-21 11:50:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13610 to 5774. [2021-08-21 11:50:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5772 states have (on average 2.7127512127512126) internal successors, (15658), 5773 states have internal predecessors, (15658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 15658 transitions. [2021-08-21 11:50:27,932 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 15658 transitions. Word has length 114 [2021-08-21 11:50:27,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:27,932 INFO L470 AbstractCegarLoop]: Abstraction has 5774 states and 15658 transitions. [2021-08-21 11:50:27,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:27,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 15658 transitions. [2021-08-21 11:50:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:27,939 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:27,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:27,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-08-21 11:50:27,939 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:27,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1464935954, now seen corresponding path program 167 times [2021-08-21 11:50:27,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:27,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231177612] [2021-08-21 11:50:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:27,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:28,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:28,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231177612] [2021-08-21 11:50:28,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231177612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:28,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:28,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:28,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687122168] [2021-08-21 11:50:28,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:28,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:28,350 INFO L87 Difference]: Start difference. First operand 5774 states and 15658 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:29,882 INFO L93 Difference]: Finished difference Result 16038 states and 42687 transitions. [2021-08-21 11:50:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:29,904 INFO L225 Difference]: With dead ends: 16038 [2021-08-21 11:50:29,905 INFO L226 Difference]: Without dead ends: 16038 [2021-08-21 11:50:29,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1263.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16038 states. [2021-08-21 11:50:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16038 to 5790. [2021-08-21 11:50:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5790 states, 5788 states have (on average 2.7131997235659986) internal successors, (15704), 5789 states have internal predecessors, (15704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 15704 transitions. [2021-08-21 11:50:30,041 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 15704 transitions. Word has length 114 [2021-08-21 11:50:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:30,041 INFO L470 AbstractCegarLoop]: Abstraction has 5790 states and 15704 transitions. [2021-08-21 11:50:30,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 15704 transitions. [2021-08-21 11:50:30,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:30,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:30,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:30,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-08-21 11:50:30,048 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:30,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:30,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1590911244, now seen corresponding path program 168 times [2021-08-21 11:50:30,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:30,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786067297] [2021-08-21 11:50:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:30,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:30,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:30,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786067297] [2021-08-21 11:50:30,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786067297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:30,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:30,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:30,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451169805] [2021-08-21 11:50:30,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:30,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:30,457 INFO L87 Difference]: Start difference. First operand 5790 states and 15704 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:32,029 INFO L93 Difference]: Finished difference Result 14438 states and 38207 transitions. [2021-08-21 11:50:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:32,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:32,052 INFO L225 Difference]: With dead ends: 14438 [2021-08-21 11:50:32,052 INFO L226 Difference]: Without dead ends: 14438 [2021-08-21 11:50:32,053 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1291.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14438 states. [2021-08-21 11:50:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14438 to 5762. [2021-08-21 11:50:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5762 states, 5760 states have (on average 2.7090277777777776) internal successors, (15604), 5761 states have internal predecessors, (15604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:32,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5762 states to 5762 states and 15604 transitions. [2021-08-21 11:50:32,191 INFO L78 Accepts]: Start accepts. Automaton has 5762 states and 15604 transitions. Word has length 114 [2021-08-21 11:50:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:32,192 INFO L470 AbstractCegarLoop]: Abstraction has 5762 states and 15604 transitions. [2021-08-21 11:50:32,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 5762 states and 15604 transitions. [2021-08-21 11:50:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:32,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:32,226 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:32,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-08-21 11:50:32,226 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash 670538668, now seen corresponding path program 169 times [2021-08-21 11:50:32,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:32,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372536882] [2021-08-21 11:50:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:32,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:32,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:32,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372536882] [2021-08-21 11:50:32,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372536882] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:32,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:32,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:32,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4459861] [2021-08-21 11:50:32,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:32,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:32,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:32,699 INFO L87 Difference]: Start difference. First operand 5762 states and 15604 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:34,127 INFO L93 Difference]: Finished difference Result 17258 states and 45654 transitions. [2021-08-21 11:50:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:34,156 INFO L225 Difference]: With dead ends: 17258 [2021-08-21 11:50:34,156 INFO L226 Difference]: Without dead ends: 17258 [2021-08-21 11:50:34,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1285.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17258 states. [2021-08-21 11:50:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17258 to 5794. [2021-08-21 11:50:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5792 states have (on average 2.7099447513812156) internal successors, (15696), 5793 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:34,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 15696 transitions. [2021-08-21 11:50:34,308 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 15696 transitions. Word has length 114 [2021-08-21 11:50:34,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:34,308 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 15696 transitions. [2021-08-21 11:50:34,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 15696 transitions. [2021-08-21 11:50:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:34,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:34,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:34,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-08-21 11:50:34,315 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:34,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:34,315 INFO L82 PathProgramCache]: Analyzing trace with hash -568581430, now seen corresponding path program 170 times [2021-08-21 11:50:34,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:34,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886546712] [2021-08-21 11:50:34,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:34,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:34,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:34,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886546712] [2021-08-21 11:50:34,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886546712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:34,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:34,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:34,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105287663] [2021-08-21 11:50:34,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:34,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:34,728 INFO L87 Difference]: Start difference. First operand 5794 states and 15696 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:36,199 INFO L93 Difference]: Finished difference Result 18031 states and 47386 transitions. [2021-08-21 11:50:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:36,231 INFO L225 Difference]: With dead ends: 18031 [2021-08-21 11:50:36,232 INFO L226 Difference]: Without dead ends: 18031 [2021-08-21 11:50:36,232 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1291.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18031 states. [2021-08-21 11:50:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18031 to 5778. [2021-08-21 11:50:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5778 states, 5776 states have (on average 2.7094875346260388) internal successors, (15650), 5777 states have internal predecessors, (15650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 15650 transitions. [2021-08-21 11:50:36,398 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 15650 transitions. Word has length 114 [2021-08-21 11:50:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:36,398 INFO L470 AbstractCegarLoop]: Abstraction has 5778 states and 15650 transitions. [2021-08-21 11:50:36,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 15650 transitions. [2021-08-21 11:50:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:36,405 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:36,405 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:36,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-08-21 11:50:36,406 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1778923026, now seen corresponding path program 171 times [2021-08-21 11:50:36,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:36,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133021138] [2021-08-21 11:50:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:36,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:36,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:36,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133021138] [2021-08-21 11:50:36,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133021138] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:36,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:36,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:36,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258938183] [2021-08-21 11:50:36,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:36,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:36,852 INFO L87 Difference]: Start difference. First operand 5778 states and 15650 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:38,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:38,403 INFO L93 Difference]: Finished difference Result 17397 states and 45871 transitions. [2021-08-21 11:50:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:38,403 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:38,433 INFO L225 Difference]: With dead ends: 17397 [2021-08-21 11:50:38,433 INFO L226 Difference]: Without dead ends: 17397 [2021-08-21 11:50:38,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1354.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17397 states. [2021-08-21 11:50:38,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17397 to 5794. [2021-08-21 11:50:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 5792 states have (on average 2.7099447513812156) internal successors, (15696), 5793 states have internal predecessors, (15696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 15696 transitions. [2021-08-21 11:50:38,605 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 15696 transitions. Word has length 114 [2021-08-21 11:50:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:38,605 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 15696 transitions. [2021-08-21 11:50:38,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:38,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 15696 transitions. [2021-08-21 11:50:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:38,613 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:38,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:38,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-08-21 11:50:38,613 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:38,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1584025642, now seen corresponding path program 172 times [2021-08-21 11:50:38,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:38,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581577311] [2021-08-21 11:50:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:38,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:39,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:39,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581577311] [2021-08-21 11:50:39,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581577311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:39,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:39,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:39,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560326801] [2021-08-21 11:50:39,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:39,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:39,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:39,028 INFO L87 Difference]: Start difference. First operand 5794 states and 15696 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:40,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:40,572 INFO L93 Difference]: Finished difference Result 14622 states and 38709 transitions. [2021-08-21 11:50:40,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:40,572 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:40,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:40,594 INFO L225 Difference]: With dead ends: 14622 [2021-08-21 11:50:40,595 INFO L226 Difference]: Without dead ends: 14622 [2021-08-21 11:50:40,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1275.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:40,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14622 states. [2021-08-21 11:50:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14622 to 5750. [2021-08-21 11:50:40,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.707376478775226) internal successors, (15562), 5749 states have internal predecessors, (15562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:40,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15562 transitions. [2021-08-21 11:50:40,725 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15562 transitions. Word has length 114 [2021-08-21 11:50:40,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:40,725 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15562 transitions. [2021-08-21 11:50:40,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:40,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15562 transitions. [2021-08-21 11:50:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:40,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:40,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:40,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-08-21 11:50:40,732 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:40,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1571574064, now seen corresponding path program 173 times [2021-08-21 11:50:40,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:40,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593531357] [2021-08-21 11:50:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:40,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:41,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:41,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593531357] [2021-08-21 11:50:41,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593531357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:41,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:41,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:41,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076324965] [2021-08-21 11:50:41,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:41,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:41,124 INFO L87 Difference]: Start difference. First operand 5750 states and 15562 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:42,616 INFO L93 Difference]: Finished difference Result 13844 states and 36864 transitions. [2021-08-21 11:50:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:42,617 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:42,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:42,637 INFO L225 Difference]: With dead ends: 13844 [2021-08-21 11:50:42,638 INFO L226 Difference]: Without dead ends: 13844 [2021-08-21 11:50:42,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1277.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13844 states. [2021-08-21 11:50:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13844 to 5814. [2021-08-21 11:50:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5812 states have (on average 2.7092222986923606) internal successors, (15746), 5813 states have internal predecessors, (15746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 15746 transitions. [2021-08-21 11:50:42,779 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 15746 transitions. Word has length 114 [2021-08-21 11:50:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:42,779 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 15746 transitions. [2021-08-21 11:50:42,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 15746 transitions. [2021-08-21 11:50:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:42,786 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:42,787 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:42,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-08-21 11:50:42,787 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:42,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1484273134, now seen corresponding path program 174 times [2021-08-21 11:50:42,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:42,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840137847] [2021-08-21 11:50:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:42,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:43,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:43,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840137847] [2021-08-21 11:50:43,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840137847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:43,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:43,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:43,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324125921] [2021-08-21 11:50:43,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:43,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:43,184 INFO L87 Difference]: Start difference. First operand 5814 states and 15746 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:44,627 INFO L93 Difference]: Finished difference Result 14617 states and 38596 transitions. [2021-08-21 11:50:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:44,652 INFO L225 Difference]: With dead ends: 14617 [2021-08-21 11:50:44,652 INFO L226 Difference]: Without dead ends: 14617 [2021-08-21 11:50:44,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1253.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14617 states. [2021-08-21 11:50:44,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14617 to 5798. [2021-08-21 11:50:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5798 states, 5796 states have (on average 2.7087646652864046) internal successors, (15700), 5797 states have internal predecessors, (15700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:44,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 15700 transitions. [2021-08-21 11:50:44,871 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 15700 transitions. Word has length 114 [2021-08-21 11:50:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:44,871 INFO L470 AbstractCegarLoop]: Abstraction has 5798 states and 15700 transitions. [2021-08-21 11:50:44,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:44,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 15700 transitions. [2021-08-21 11:50:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:44,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:44,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:44,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-08-21 11:50:44,877 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash 273931538, now seen corresponding path program 175 times [2021-08-21 11:50:44,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:44,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326300762] [2021-08-21 11:50:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:44,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:45,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:45,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326300762] [2021-08-21 11:50:45,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326300762] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:45,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:45,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:45,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132318497] [2021-08-21 11:50:45,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:45,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:45,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:45,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:45,283 INFO L87 Difference]: Start difference. First operand 5798 states and 15700 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:46,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:46,758 INFO L93 Difference]: Finished difference Result 17560 states and 46214 transitions. [2021-08-21 11:50:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:46,758 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:46,787 INFO L225 Difference]: With dead ends: 17560 [2021-08-21 11:50:46,787 INFO L226 Difference]: Without dead ends: 17560 [2021-08-21 11:50:46,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1272.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17560 states. [2021-08-21 11:50:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17560 to 5814. [2021-08-21 11:50:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5812 states have (on average 2.7092222986923606) internal successors, (15746), 5813 states have internal predecessors, (15746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 15746 transitions. [2021-08-21 11:50:46,945 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 15746 transitions. Word has length 114 [2021-08-21 11:50:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:46,945 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 15746 transitions. [2021-08-21 11:50:46,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:46,946 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 15746 transitions. [2021-08-21 11:50:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:46,952 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:46,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:46,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-08-21 11:50:46,953 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:46,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:46,953 INFO L82 PathProgramCache]: Analyzing trace with hash -658087090, now seen corresponding path program 176 times [2021-08-21 11:50:46,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:46,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878392635] [2021-08-21 11:50:46,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:46,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:47,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:47,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878392635] [2021-08-21 11:50:47,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878392635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:47,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:47,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:47,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886045666] [2021-08-21 11:50:47,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:47,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:47,399 INFO L87 Difference]: Start difference. First operand 5814 states and 15746 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:48,920 INFO L93 Difference]: Finished difference Result 14785 states and 39052 transitions. [2021-08-21 11:50:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:48,920 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:48,945 INFO L225 Difference]: With dead ends: 14785 [2021-08-21 11:50:48,945 INFO L226 Difference]: Without dead ends: 14785 [2021-08-21 11:50:48,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1327.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14785 states. [2021-08-21 11:50:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14785 to 5782. [2021-08-21 11:50:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5780 states have (on average 2.708304498269896) internal successors, (15654), 5781 states have internal predecessors, (15654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:49,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 15654 transitions. [2021-08-21 11:50:49,085 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 15654 transitions. Word has length 114 [2021-08-21 11:50:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:49,085 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 15654 transitions. [2021-08-21 11:50:49,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 15654 transitions. [2021-08-21 11:50:49,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:49,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:49,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:49,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-08-21 11:50:49,094 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:49,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:49,095 INFO L82 PathProgramCache]: Analyzing trace with hash 406689292, now seen corresponding path program 177 times [2021-08-21 11:50:49,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:49,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657039467] [2021-08-21 11:50:49,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:49,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:49,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:49,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657039467] [2021-08-21 11:50:49,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657039467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:49,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:49,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:49,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681303871] [2021-08-21 11:50:49,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:49,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:49,511 INFO L87 Difference]: Start difference. First operand 5782 states and 15654 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:51,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:51,114 INFO L93 Difference]: Finished difference Result 13967 states and 37035 transitions. [2021-08-21 11:50:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:51,140 INFO L225 Difference]: With dead ends: 13967 [2021-08-21 11:50:51,140 INFO L226 Difference]: Without dead ends: 13967 [2021-08-21 11:50:51,140 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1357.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13967 states. [2021-08-21 11:50:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13967 to 5830. [2021-08-21 11:50:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5830 states, 5828 states have (on average 2.7096774193548385) internal successors, (15792), 5829 states have internal predecessors, (15792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:51,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5830 states to 5830 states and 15792 transitions. [2021-08-21 11:50:51,292 INFO L78 Accepts]: Start accepts. Automaton has 5830 states and 15792 transitions. Word has length 114 [2021-08-21 11:50:51,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:51,292 INFO L470 AbstractCegarLoop]: Abstraction has 5830 states and 15792 transitions. [2021-08-21 11:50:51,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 5830 states and 15792 transitions. [2021-08-21 11:50:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:51,300 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:51,300 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:51,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-08-21 11:50:51,300 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:51,301 INFO L82 PathProgramCache]: Analyzing trace with hash -525329336, now seen corresponding path program 178 times [2021-08-21 11:50:51,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:51,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893720629] [2021-08-21 11:50:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:51,301 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:51,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:51,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893720629] [2021-08-21 11:50:51,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893720629] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:51,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:51,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:51,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178924812] [2021-08-21 11:50:51,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:51,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:51,714 INFO L87 Difference]: Start difference. First operand 5830 states and 15792 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:53,267 INFO L93 Difference]: Finished difference Result 13867 states and 36753 transitions. [2021-08-21 11:50:53,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:53,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:53,291 INFO L225 Difference]: With dead ends: 13867 [2021-08-21 11:50:53,291 INFO L226 Difference]: Without dead ends: 13867 [2021-08-21 11:50:53,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1325.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13867 states. [2021-08-21 11:50:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13867 to 5814. [2021-08-21 11:50:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5814 states, 5812 states have (on average 2.7092222986923606) internal successors, (15746), 5813 states have internal predecessors, (15746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5814 states to 5814 states and 15746 transitions. [2021-08-21 11:50:53,435 INFO L78 Accepts]: Start accepts. Automaton has 5814 states and 15746 transitions. Word has length 114 [2021-08-21 11:50:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 5814 states and 15746 transitions. [2021-08-21 11:50:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5814 states and 15746 transitions. [2021-08-21 11:50:53,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:53,443 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:53,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:53,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-08-21 11:50:53,444 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:53,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash 277935280, now seen corresponding path program 179 times [2021-08-21 11:50:53,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:53,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670175705] [2021-08-21 11:50:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:53,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:53,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:53,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670175705] [2021-08-21 11:50:53,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670175705] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:53,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:53,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:53,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480891857] [2021-08-21 11:50:53,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:53,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:53,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:53,917 INFO L87 Difference]: Start difference. First operand 5814 states and 15746 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:55,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:55,428 INFO L93 Difference]: Finished difference Result 11410 states and 30419 transitions. [2021-08-21 11:50:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:55,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:55,445 INFO L225 Difference]: With dead ends: 11410 [2021-08-21 11:50:55,446 INFO L226 Difference]: Without dead ends: 11410 [2021-08-21 11:50:55,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1319.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11410 states. [2021-08-21 11:50:55,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11410 to 5726. [2021-08-21 11:50:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 5724 states have (on average 2.7040531097134872) internal successors, (15478), 5725 states have internal predecessors, (15478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:55,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 15478 transitions. [2021-08-21 11:50:55,562 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 15478 transitions. Word has length 114 [2021-08-21 11:50:55,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:55,562 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 15478 transitions. [2021-08-21 11:50:55,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 15478 transitions. [2021-08-21 11:50:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:55,569 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:55,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:55,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-08-21 11:50:55,569 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash 920991214, now seen corresponding path program 180 times [2021-08-21 11:50:55,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:55,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878360718] [2021-08-21 11:50:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:55,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:56,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:56,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878360718] [2021-08-21 11:50:56,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878360718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:56,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:56,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:56,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690124267] [2021-08-21 11:50:56,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:56,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:56,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:56,012 INFO L87 Difference]: Start difference. First operand 5726 states and 15478 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:57,605 INFO L93 Difference]: Finished difference Result 18149 states and 48153 transitions. [2021-08-21 11:50:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:50:57,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:50:57,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:57,640 INFO L225 Difference]: With dead ends: 18149 [2021-08-21 11:50:57,641 INFO L226 Difference]: Without dead ends: 18149 [2021-08-21 11:50:57,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1323.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:50:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2021-08-21 11:50:57,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 5806. [2021-08-21 11:50:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 5804 states have (on average 2.7064093728463128) internal successors, (15708), 5805 states have internal predecessors, (15708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 15708 transitions. [2021-08-21 11:50:57,917 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 15708 transitions. Word has length 114 [2021-08-21 11:50:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:57,917 INFO L470 AbstractCegarLoop]: Abstraction has 5806 states and 15708 transitions. [2021-08-21 11:50:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:57,917 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 15708 transitions. [2021-08-21 11:50:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:50:57,926 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:57,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:57,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-08-21 11:50:57,926 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:50:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1992010702, now seen corresponding path program 181 times [2021-08-21 11:50:57,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:57,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090953154] [2021-08-21 11:50:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:57,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:58,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:58,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090953154] [2021-08-21 11:50:58,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090953154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:58,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:58,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:50:58,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116184014] [2021-08-21 11:50:58,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:50:58,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:50:58,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:50:58,413 INFO L87 Difference]: Start difference. First operand 5806 states and 15708 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:00,366 INFO L93 Difference]: Finished difference Result 20577 states and 54510 transitions. [2021-08-21 11:51:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:00,367 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:00,408 INFO L225 Difference]: With dead ends: 20577 [2021-08-21 11:51:00,408 INFO L226 Difference]: Without dead ends: 20577 [2021-08-21 11:51:00,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1630.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:00,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20577 states. [2021-08-21 11:51:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20577 to 5822. [2021-08-21 11:51:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5822 states, 5820 states have (on average 2.706872852233677) internal successors, (15754), 5821 states have internal predecessors, (15754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:00,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5822 states to 5822 states and 15754 transitions. [2021-08-21 11:51:00,629 INFO L78 Accepts]: Start accepts. Automaton has 5822 states and 15754 transitions. Word has length 114 [2021-08-21 11:51:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:00,629 INFO L470 AbstractCegarLoop]: Abstraction has 5822 states and 15754 transitions. [2021-08-21 11:51:00,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5822 states and 15754 transitions. [2021-08-21 11:51:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:00,638 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:00,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:00,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-08-21 11:51:00,638 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:00,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:00,639 INFO L82 PathProgramCache]: Analyzing trace with hash 752890604, now seen corresponding path program 182 times [2021-08-21 11:51:00,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:00,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008035875] [2021-08-21 11:51:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:00,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:01,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:01,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008035875] [2021-08-21 11:51:01,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008035875] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:01,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:01,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:01,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126437387] [2021-08-21 11:51:01,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:01,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:01,390 INFO L87 Difference]: Start difference. First operand 5822 states and 15754 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:02,954 INFO L93 Difference]: Finished difference Result 18977 states and 50030 transitions. [2021-08-21 11:51:02,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:02,984 INFO L225 Difference]: With dead ends: 18977 [2021-08-21 11:51:02,984 INFO L226 Difference]: Without dead ends: 18977 [2021-08-21 11:51:02,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1447.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18977 states. [2021-08-21 11:51:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18977 to 5774. [2021-08-21 11:51:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5774 states, 5772 states have (on average 2.7054747054747055) internal successors, (15616), 5773 states have internal predecessors, (15616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5774 states to 5774 states and 15616 transitions. [2021-08-21 11:51:03,146 INFO L78 Accepts]: Start accepts. Automaton has 5774 states and 15616 transitions. Word has length 114 [2021-08-21 11:51:03,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:03,146 INFO L470 AbstractCegarLoop]: Abstraction has 5774 states and 15616 transitions. [2021-08-21 11:51:03,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5774 states and 15616 transitions. [2021-08-21 11:51:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:03,153 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:03,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:03,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-08-21 11:51:03,153 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:03,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:03,153 INFO L82 PathProgramCache]: Analyzing trace with hash -167481972, now seen corresponding path program 183 times [2021-08-21 11:51:03,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:03,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566024349] [2021-08-21 11:51:03,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:03,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:03,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:03,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566024349] [2021-08-21 11:51:03,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566024349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:03,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:03,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:03,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829692226] [2021-08-21 11:51:03,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:03,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:03,596 INFO L87 Difference]: Start difference. First operand 5774 states and 15616 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:05,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:05,041 INFO L93 Difference]: Finished difference Result 18255 states and 48319 transitions. [2021-08-21 11:51:05,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:05,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:05,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:05,070 INFO L225 Difference]: With dead ends: 18255 [2021-08-21 11:51:05,070 INFO L226 Difference]: Without dead ends: 18255 [2021-08-21 11:51:05,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1240.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18255 states. [2021-08-21 11:51:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18255 to 5806. [2021-08-21 11:51:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 5804 states have (on average 2.7064093728463128) internal successors, (15708), 5805 states have internal predecessors, (15708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:05,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 15708 transitions. [2021-08-21 11:51:05,232 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 15708 transitions. Word has length 114 [2021-08-21 11:51:05,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:05,232 INFO L470 AbstractCegarLoop]: Abstraction has 5806 states and 15708 transitions. [2021-08-21 11:51:05,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:05,232 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 15708 transitions. [2021-08-21 11:51:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:05,239 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:05,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:05,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-08-21 11:51:05,239 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:05,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:05,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1406602070, now seen corresponding path program 184 times [2021-08-21 11:51:05,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:05,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189775637] [2021-08-21 11:51:05,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:05,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:05,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:05,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189775637] [2021-08-21 11:51:05,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189775637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:05,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:05,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:05,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286118901] [2021-08-21 11:51:05,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:05,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:05,627 INFO L87 Difference]: Start difference. First operand 5806 states and 15708 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:07,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:07,121 INFO L93 Difference]: Finished difference Result 19028 states and 50051 transitions. [2021-08-21 11:51:07,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:07,121 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:07,150 INFO L225 Difference]: With dead ends: 19028 [2021-08-21 11:51:07,151 INFO L226 Difference]: Without dead ends: 19028 [2021-08-21 11:51:07,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1292.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19028 states. [2021-08-21 11:51:07,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19028 to 5790. [2021-08-21 11:51:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5790 states, 5788 states have (on average 2.7059433310297165) internal successors, (15662), 5789 states have internal predecessors, (15662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 15662 transitions. [2021-08-21 11:51:07,309 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 15662 transitions. Word has length 114 [2021-08-21 11:51:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:07,309 INFO L470 AbstractCegarLoop]: Abstraction has 5790 states and 15662 transitions. [2021-08-21 11:51:07,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 15662 transitions. [2021-08-21 11:51:07,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:07,316 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:07,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:07,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-08-21 11:51:07,316 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:07,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1678023630, now seen corresponding path program 185 times [2021-08-21 11:51:07,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:07,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705648837] [2021-08-21 11:51:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:07,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:07,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:07,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705648837] [2021-08-21 11:51:07,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705648837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:07,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:07,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:07,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630403851] [2021-08-21 11:51:07,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:07,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:07,713 INFO L87 Difference]: Start difference. First operand 5790 states and 15662 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:09,173 INFO L93 Difference]: Finished difference Result 18394 states and 48536 transitions. [2021-08-21 11:51:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:09,203 INFO L225 Difference]: With dead ends: 18394 [2021-08-21 11:51:09,204 INFO L226 Difference]: Without dead ends: 18394 [2021-08-21 11:51:09,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1269.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18394 states. [2021-08-21 11:51:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18394 to 5806. [2021-08-21 11:51:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 5804 states have (on average 2.7064093728463128) internal successors, (15708), 5805 states have internal predecessors, (15708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 15708 transitions. [2021-08-21 11:51:09,373 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 15708 transitions. Word has length 114 [2021-08-21 11:51:09,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:09,373 INFO L470 AbstractCegarLoop]: Abstraction has 5806 states and 15708 transitions. [2021-08-21 11:51:09,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 15708 transitions. [2021-08-21 11:51:09,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:09,380 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:09,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:09,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-08-21 11:51:09,380 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 746005002, now seen corresponding path program 186 times [2021-08-21 11:51:09,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:09,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893989468] [2021-08-21 11:51:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:09,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:09,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:09,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893989468] [2021-08-21 11:51:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893989468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:09,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:09,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821013474] [2021-08-21 11:51:09,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:09,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:09,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:09,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:09,780 INFO L87 Difference]: Start difference. First operand 5806 states and 15708 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:11,256 INFO L93 Difference]: Finished difference Result 15901 states and 42088 transitions. [2021-08-21 11:51:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:11,283 INFO L225 Difference]: With dead ends: 15901 [2021-08-21 11:51:11,283 INFO L226 Difference]: Without dead ends: 15901 [2021-08-21 11:51:11,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1286.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15901 states. [2021-08-21 11:51:11,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15901 to 5742. [2021-08-21 11:51:11,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 2.704529616724739) internal successors, (15524), 5741 states have internal predecessors, (15524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 15524 transitions. [2021-08-21 11:51:11,441 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 15524 transitions. Word has length 114 [2021-08-21 11:51:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:11,441 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 15524 transitions. [2021-08-21 11:51:11,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 15524 transitions. [2021-08-21 11:51:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:11,448 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:11,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:11,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-08-21 11:51:11,449 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:11,449 INFO L82 PathProgramCache]: Analyzing trace with hash -625699090, now seen corresponding path program 187 times [2021-08-21 11:51:11,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:11,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550379786] [2021-08-21 11:51:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:11,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:11,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:11,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550379786] [2021-08-21 11:51:11,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550379786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:11,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:11,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:11,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903649755] [2021-08-21 11:51:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:11,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:11,853 INFO L87 Difference]: Start difference. First operand 5742 states and 15524 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:13,297 INFO L93 Difference]: Finished difference Result 16331 states and 43556 transitions. [2021-08-21 11:51:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:13,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:13,324 INFO L225 Difference]: With dead ends: 16331 [2021-08-21 11:51:13,325 INFO L226 Difference]: Without dead ends: 16331 [2021-08-21 11:51:13,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1209.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:13,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16331 states. [2021-08-21 11:51:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16331 to 5790. [2021-08-21 11:51:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5790 states, 5788 states have (on average 2.7059433310297165) internal successors, (15662), 5789 states have internal predecessors, (15662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 15662 transitions. [2021-08-21 11:51:13,512 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 15662 transitions. Word has length 114 [2021-08-21 11:51:13,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:13,513 INFO L470 AbstractCegarLoop]: Abstraction has 5790 states and 15662 transitions. [2021-08-21 11:51:13,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 15662 transitions. [2021-08-21 11:51:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:13,522 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:13,522 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:13,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-08-21 11:51:13,522 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:13,522 INFO L82 PathProgramCache]: Analyzing trace with hash 445320398, now seen corresponding path program 188 times [2021-08-21 11:51:13,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:13,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229340220] [2021-08-21 11:51:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:13,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:13,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:13,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229340220] [2021-08-21 11:51:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229340220] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:13,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311784424] [2021-08-21 11:51:13,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:13,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:13,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:13,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:13,940 INFO L87 Difference]: Start difference. First operand 5790 states and 15662 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:15,393 INFO L93 Difference]: Finished difference Result 16403 states and 43688 transitions. [2021-08-21 11:51:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:15,422 INFO L225 Difference]: With dead ends: 16403 [2021-08-21 11:51:15,422 INFO L226 Difference]: Without dead ends: 16403 [2021-08-21 11:51:15,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1222.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16403 states. [2021-08-21 11:51:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16403 to 5806. [2021-08-21 11:51:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5806 states, 5804 states have (on average 2.7064093728463128) internal successors, (15708), 5805 states have internal predecessors, (15708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5806 states to 5806 states and 15708 transitions. [2021-08-21 11:51:15,583 INFO L78 Accepts]: Start accepts. Automaton has 5806 states and 15708 transitions. Word has length 114 [2021-08-21 11:51:15,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:15,583 INFO L470 AbstractCegarLoop]: Abstraction has 5806 states and 15708 transitions. [2021-08-21 11:51:15,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5806 states and 15708 transitions. [2021-08-21 11:51:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:15,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:15,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:15,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-08-21 11:51:15,590 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:15,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash -793799700, now seen corresponding path program 189 times [2021-08-21 11:51:15,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:15,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705071544] [2021-08-21 11:51:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:15,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:16,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:16,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705071544] [2021-08-21 11:51:16,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705071544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:16,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:16,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:16,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793757113] [2021-08-21 11:51:16,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:16,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:16,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:16,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:16,067 INFO L87 Difference]: Start difference. First operand 5806 states and 15708 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:17,516 INFO L93 Difference]: Finished difference Result 15813 states and 41766 transitions. [2021-08-21 11:51:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:17,541 INFO L225 Difference]: With dead ends: 15813 [2021-08-21 11:51:17,542 INFO L226 Difference]: Without dead ends: 15813 [2021-08-21 11:51:17,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1245.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15813 states. [2021-08-21 11:51:17,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15813 to 5758. [2021-08-21 11:51:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5758 states, 5756 states have (on average 2.705003474635163) internal successors, (15570), 5757 states have internal predecessors, (15570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 15570 transitions. [2021-08-21 11:51:17,686 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 15570 transitions. Word has length 114 [2021-08-21 11:51:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:17,686 INFO L470 AbstractCegarLoop]: Abstraction has 5758 states and 15570 transitions. [2021-08-21 11:51:17,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 15570 transitions. [2021-08-21 11:51:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:17,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:17,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:17,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-08-21 11:51:17,693 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:17,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:17,693 INFO L82 PathProgramCache]: Analyzing trace with hash -881180976, now seen corresponding path program 190 times [2021-08-21 11:51:17,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:17,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72803914] [2021-08-21 11:51:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:17,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:18,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:18,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:18,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72803914] [2021-08-21 11:51:18,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72803914] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:18,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:18,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:18,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192816681] [2021-08-21 11:51:18,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:18,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:18,091 INFO L87 Difference]: Start difference. First operand 5758 states and 15570 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:19,553 INFO L93 Difference]: Finished difference Result 12513 states and 33217 transitions. [2021-08-21 11:51:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:19,554 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:19,575 INFO L225 Difference]: With dead ends: 12513 [2021-08-21 11:51:19,575 INFO L226 Difference]: Without dead ends: 12513 [2021-08-21 11:51:19,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1230.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:19,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12513 states. [2021-08-21 11:51:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12513 to 5702. [2021-08-21 11:51:19,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7028070175438597) internal successors, (15406), 5701 states have internal predecessors, (15406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15406 transitions. [2021-08-21 11:51:19,702 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15406 transitions. Word has length 114 [2021-08-21 11:51:19,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:19,702 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15406 transitions. [2021-08-21 11:51:19,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15406 transitions. [2021-08-21 11:51:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:19,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:19,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:19,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-08-21 11:51:19,709 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1211412336, now seen corresponding path program 191 times [2021-08-21 11:51:19,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:19,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530893473] [2021-08-21 11:51:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:19,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:20,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:20,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530893473] [2021-08-21 11:51:20,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530893473] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:20,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:20,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:20,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251026680] [2021-08-21 11:51:20,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:20,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:20,105 INFO L87 Difference]: Start difference. First operand 5702 states and 15406 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:21,569 INFO L93 Difference]: Finished difference Result 14078 states and 37566 transitions. [2021-08-21 11:51:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:21,593 INFO L225 Difference]: With dead ends: 14078 [2021-08-21 11:51:21,594 INFO L226 Difference]: Without dead ends: 14078 [2021-08-21 11:51:21,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1248.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2021-08-21 11:51:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 5782. [2021-08-21 11:51:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5780 states have (on average 2.705190311418685) internal successors, (15636), 5781 states have internal predecessors, (15636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 15636 transitions. [2021-08-21 11:51:21,724 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 15636 transitions. Word has length 114 [2021-08-21 11:51:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:21,724 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 15636 transitions. [2021-08-21 11:51:21,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 15636 transitions. [2021-08-21 11:51:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:21,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:21,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:21,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-08-21 11:51:21,731 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:21,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:21,731 INFO L82 PathProgramCache]: Analyzing trace with hash -140392848, now seen corresponding path program 192 times [2021-08-21 11:51:21,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:21,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252138558] [2021-08-21 11:51:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:21,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:22,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:22,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252138558] [2021-08-21 11:51:22,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252138558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:22,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:22,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:22,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553970259] [2021-08-21 11:51:22,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:22,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:22,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:22,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:22,122 INFO L87 Difference]: Start difference. First operand 5782 states and 15636 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:23,681 INFO L93 Difference]: Finished difference Result 16506 states and 43923 transitions. [2021-08-21 11:51:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:23,682 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:23,715 INFO L225 Difference]: With dead ends: 16506 [2021-08-21 11:51:23,716 INFO L226 Difference]: Without dead ends: 16506 [2021-08-21 11:51:23,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1256.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16506 states. [2021-08-21 11:51:23,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16506 to 5798. [2021-08-21 11:51:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5798 states, 5796 states have (on average 2.705659075224293) internal successors, (15682), 5797 states have internal predecessors, (15682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5798 states to 5798 states and 15682 transitions. [2021-08-21 11:51:23,888 INFO L78 Accepts]: Start accepts. Automaton has 5798 states and 15682 transitions. Word has length 114 [2021-08-21 11:51:23,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:23,889 INFO L470 AbstractCegarLoop]: Abstraction has 5798 states and 15682 transitions. [2021-08-21 11:51:23,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5798 states and 15682 transitions. [2021-08-21 11:51:23,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:23,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:23,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:23,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-08-21 11:51:23,896 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:23,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1379512946, now seen corresponding path program 193 times [2021-08-21 11:51:23,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:23,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371180056] [2021-08-21 11:51:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:23,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:24,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:24,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371180056] [2021-08-21 11:51:24,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371180056] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:24,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:24,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:24,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085642230] [2021-08-21 11:51:24,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:24,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:24,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:24,287 INFO L87 Difference]: Start difference. First operand 5798 states and 15682 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:25,790 INFO L93 Difference]: Finished difference Result 14906 states and 39443 transitions. [2021-08-21 11:51:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:25,791 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:25,815 INFO L225 Difference]: With dead ends: 14906 [2021-08-21 11:51:25,815 INFO L226 Difference]: Without dead ends: 14906 [2021-08-21 11:51:25,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1241.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14906 states. [2021-08-21 11:51:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14906 to 5750. [2021-08-21 11:51:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7042449547668754) internal successors, (15544), 5749 states have internal predecessors, (15544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15544 transitions. [2021-08-21 11:51:25,965 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15544 transitions. Word has length 114 [2021-08-21 11:51:25,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:25,965 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15544 transitions. [2021-08-21 11:51:25,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:25,965 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15544 transitions. [2021-08-21 11:51:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:25,971 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:25,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:25,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-08-21 11:51:25,971 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1995081774, now seen corresponding path program 194 times [2021-08-21 11:51:25,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:25,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436018879] [2021-08-21 11:51:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:25,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:26,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:26,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436018879] [2021-08-21 11:51:26,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436018879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:26,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:26,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:26,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7392518] [2021-08-21 11:51:26,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:26,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:26,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:26,361 INFO L87 Difference]: Start difference. First operand 5750 states and 15544 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:27,832 INFO L93 Difference]: Finished difference Result 14184 states and 37732 transitions. [2021-08-21 11:51:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:27,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:27,857 INFO L225 Difference]: With dead ends: 14184 [2021-08-21 11:51:27,857 INFO L226 Difference]: Without dead ends: 14184 [2021-08-21 11:51:27,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14184 states. [2021-08-21 11:51:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14184 to 5782. [2021-08-21 11:51:27,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5780 states have (on average 2.705190311418685) internal successors, (15636), 5781 states have internal predecessors, (15636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:28,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 15636 transitions. [2021-08-21 11:51:28,002 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 15636 transitions. Word has length 114 [2021-08-21 11:51:28,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:28,002 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 15636 transitions. [2021-08-21 11:51:28,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:28,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 15636 transitions. [2021-08-21 11:51:28,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:28,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:28,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:28,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-08-21 11:51:28,010 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:28,010 INFO L82 PathProgramCache]: Analyzing trace with hash 755961676, now seen corresponding path program 195 times [2021-08-21 11:51:28,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:28,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455941562] [2021-08-21 11:51:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:28,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:28,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:28,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455941562] [2021-08-21 11:51:28,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455941562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:28,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:28,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:28,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115947683] [2021-08-21 11:51:28,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:28,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:28,428 INFO L87 Difference]: Start difference. First operand 5782 states and 15636 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:29,855 INFO L93 Difference]: Finished difference Result 14957 states and 39464 transitions. [2021-08-21 11:51:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:29,880 INFO L225 Difference]: With dead ends: 14957 [2021-08-21 11:51:29,880 INFO L226 Difference]: Without dead ends: 14957 [2021-08-21 11:51:29,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1234.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14957 states. [2021-08-21 11:51:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14957 to 5766. [2021-08-21 11:51:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5764 states have (on average 2.7047189451769604) internal successors, (15590), 5765 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:30,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 15590 transitions. [2021-08-21 11:51:30,016 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 15590 transitions. Word has length 114 [2021-08-21 11:51:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:30,016 INFO L470 AbstractCegarLoop]: Abstraction has 5766 states and 15590 transitions. [2021-08-21 11:51:30,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 15590 transitions. [2021-08-21 11:51:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:30,023 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:30,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:30,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-08-21 11:51:30,023 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash -454379920, now seen corresponding path program 196 times [2021-08-21 11:51:30,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:30,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656280508] [2021-08-21 11:51:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:30,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:30,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:30,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656280508] [2021-08-21 11:51:30,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656280508] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:30,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:30,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:30,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426705636] [2021-08-21 11:51:30,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:30,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:30,416 INFO L87 Difference]: Start difference. First operand 5766 states and 15590 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:31,920 INFO L93 Difference]: Finished difference Result 14323 states and 37949 transitions. [2021-08-21 11:51:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:31,920 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:31,943 INFO L225 Difference]: With dead ends: 14323 [2021-08-21 11:51:31,943 INFO L226 Difference]: Without dead ends: 14323 [2021-08-21 11:51:31,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1273.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:31,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14323 states. [2021-08-21 11:51:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14323 to 5782. [2021-08-21 11:51:32,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5780 states have (on average 2.705190311418685) internal successors, (15636), 5781 states have internal predecessors, (15636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 15636 transitions. [2021-08-21 11:51:32,085 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 15636 transitions. Word has length 114 [2021-08-21 11:51:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:32,085 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 15636 transitions. [2021-08-21 11:51:32,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 15636 transitions. [2021-08-21 11:51:32,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:32,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:32,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:32,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-08-21 11:51:32,092 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:32,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1386398548, now seen corresponding path program 197 times [2021-08-21 11:51:32,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:32,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721945175] [2021-08-21 11:51:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:32,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:32,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:32,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721945175] [2021-08-21 11:51:32,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721945175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:32,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:32,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:32,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869410818] [2021-08-21 11:51:32,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:32,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:32,520 INFO L87 Difference]: Start difference. First operand 5782 states and 15636 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:34,003 INFO L93 Difference]: Finished difference Result 11830 states and 31501 transitions. [2021-08-21 11:51:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:34,021 INFO L225 Difference]: With dead ends: 11830 [2021-08-21 11:51:34,021 INFO L226 Difference]: Without dead ends: 11830 [2021-08-21 11:51:34,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1284.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11830 states. [2021-08-21 11:51:34,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11830 to 5718. [2021-08-21 11:51:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7032890132960112) internal successors, (15452), 5717 states have internal predecessors, (15452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15452 transitions. [2021-08-21 11:51:34,132 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15452 transitions. Word has length 114 [2021-08-21 11:51:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:34,132 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15452 transitions. [2021-08-21 11:51:34,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15452 transitions. [2021-08-21 11:51:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:34,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:34,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:34,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-08-21 11:51:34,139 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1536864656, now seen corresponding path program 198 times [2021-08-21 11:51:34,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:34,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076639633] [2021-08-21 11:51:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:34,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:34,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:34,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:34,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076639633] [2021-08-21 11:51:34,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076639633] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:34,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:34,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:34,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777234994] [2021-08-21 11:51:34,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:34,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:34,534 INFO L87 Difference]: Start difference. First operand 5718 states and 15452 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:36,043 INFO L93 Difference]: Finished difference Result 16783 states and 44746 transitions. [2021-08-21 11:51:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:36,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:36,069 INFO L225 Difference]: With dead ends: 16783 [2021-08-21 11:51:36,069 INFO L226 Difference]: Without dead ends: 16783 [2021-08-21 11:51:36,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1236.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16783 states. [2021-08-21 11:51:36,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16783 to 5766. [2021-08-21 11:51:36,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5764 states have (on average 2.7047189451769604) internal successors, (15590), 5765 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 15590 transitions. [2021-08-21 11:51:36,229 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 15590 transitions. Word has length 114 [2021-08-21 11:51:36,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:36,229 INFO L470 AbstractCegarLoop]: Abstraction has 5766 states and 15590 transitions. [2021-08-21 11:51:36,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,229 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 15590 transitions. [2021-08-21 11:51:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:36,236 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:36,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:36,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-08-21 11:51:36,236 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:36,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:36,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1687083152, now seen corresponding path program 199 times [2021-08-21 11:51:36,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:36,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525040667] [2021-08-21 11:51:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:36,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:36,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:36,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525040667] [2021-08-21 11:51:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525040667] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:36,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:36,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:36,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26391252] [2021-08-21 11:51:36,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:36,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:36,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:36,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:36,635 INFO L87 Difference]: Start difference. First operand 5766 states and 15590 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:38,081 INFO L93 Difference]: Finished difference Result 16855 states and 44878 transitions. [2021-08-21 11:51:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:38,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:38,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:38,108 INFO L225 Difference]: With dead ends: 16855 [2021-08-21 11:51:38,108 INFO L226 Difference]: Without dead ends: 16855 [2021-08-21 11:51:38,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1213.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16855 states. [2021-08-21 11:51:38,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16855 to 5782. [2021-08-21 11:51:38,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5782 states, 5780 states have (on average 2.705190311418685) internal successors, (15636), 5781 states have internal predecessors, (15636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:38,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5782 states to 5782 states and 15636 transitions. [2021-08-21 11:51:38,275 INFO L78 Accepts]: Start accepts. Automaton has 5782 states and 15636 transitions. Word has length 114 [2021-08-21 11:51:38,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:38,275 INFO L470 AbstractCegarLoop]: Abstraction has 5782 states and 15636 transitions. [2021-08-21 11:51:38,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5782 states and 15636 transitions. [2021-08-21 11:51:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:38,282 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:38,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:38,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-08-21 11:51:38,282 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1368764046, now seen corresponding path program 200 times [2021-08-21 11:51:38,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:38,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181270041] [2021-08-21 11:51:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:38,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:38,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:38,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181270041] [2021-08-21 11:51:38,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181270041] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:38,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:38,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:38,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718654066] [2021-08-21 11:51:38,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:38,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:38,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:38,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:38,671 INFO L87 Difference]: Start difference. First operand 5782 states and 15636 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:40,123 INFO L93 Difference]: Finished difference Result 16265 states and 42956 transitions. [2021-08-21 11:51:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:40,151 INFO L225 Difference]: With dead ends: 16265 [2021-08-21 11:51:40,151 INFO L226 Difference]: Without dead ends: 16265 [2021-08-21 11:51:40,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1223.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16265 states. [2021-08-21 11:51:40,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16265 to 5734. [2021-08-21 11:51:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.703768318213538) internal successors, (15498), 5733 states have internal predecessors, (15498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15498 transitions. [2021-08-21 11:51:40,305 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15498 transitions. Word has length 114 [2021-08-21 11:51:40,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:40,305 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15498 transitions. [2021-08-21 11:51:40,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15498 transitions. [2021-08-21 11:51:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:40,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:40,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:40,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-08-21 11:51:40,312 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:40,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1281382770, now seen corresponding path program 201 times [2021-08-21 11:51:40,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:40,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009380852] [2021-08-21 11:51:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:40,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:40,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:40,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009380852] [2021-08-21 11:51:40,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009380852] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:40,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:40,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:40,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621000281] [2021-08-21 11:51:40,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:40,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:40,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:40,734 INFO L87 Difference]: Start difference. First operand 5734 states and 15498 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:42,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:42,192 INFO L93 Difference]: Finished difference Result 12965 states and 34407 transitions. [2021-08-21 11:51:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:42,193 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:42,213 INFO L225 Difference]: With dead ends: 12965 [2021-08-21 11:51:42,213 INFO L226 Difference]: Without dead ends: 12965 [2021-08-21 11:51:42,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1212.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12965 states. [2021-08-21 11:51:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12965 to 5702. [2021-08-21 11:51:42,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7028070175438597) internal successors, (15406), 5701 states have internal predecessors, (15406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15406 transitions. [2021-08-21 11:51:42,335 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15406 transitions. Word has length 114 [2021-08-21 11:51:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:42,335 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15406 transitions. [2021-08-21 11:51:42,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:42,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15406 transitions. [2021-08-21 11:51:42,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:42,342 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:42,342 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:42,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-08-21 11:51:42,342 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:42,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:42,342 INFO L82 PathProgramCache]: Analyzing trace with hash 942180144, now seen corresponding path program 202 times [2021-08-21 11:51:42,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:42,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880182170] [2021-08-21 11:51:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:42,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:42,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:42,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880182170] [2021-08-21 11:51:42,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880182170] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:42,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:42,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:42,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797159911] [2021-08-21 11:51:42,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:42,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:42,737 INFO L87 Difference]: Start difference. First operand 5702 states and 15406 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:44,216 INFO L93 Difference]: Finished difference Result 12244 states and 32923 transitions. [2021-08-21 11:51:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:44,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:44,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:44,235 INFO L225 Difference]: With dead ends: 12244 [2021-08-21 11:51:44,235 INFO L226 Difference]: Without dead ends: 12244 [2021-08-21 11:51:44,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1209.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:44,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12244 states. [2021-08-21 11:51:44,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12244 to 5750. [2021-08-21 11:51:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7042449547668754) internal successors, (15544), 5749 states have internal predecessors, (15544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:44,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15544 transitions. [2021-08-21 11:51:44,353 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15544 transitions. Word has length 114 [2021-08-21 11:51:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:44,353 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15544 transitions. [2021-08-21 11:51:44,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:44,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15544 transitions. [2021-08-21 11:51:44,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:44,360 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:44,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:44,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-08-21 11:51:44,360 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2013199632, now seen corresponding path program 203 times [2021-08-21 11:51:44,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:44,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256762231] [2021-08-21 11:51:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:44,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:44,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:44,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256762231] [2021-08-21 11:51:44,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256762231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:44,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:44,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:44,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471622678] [2021-08-21 11:51:44,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:44,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:44,749 INFO L87 Difference]: Start difference. First operand 5750 states and 15544 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:46,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:46,226 INFO L93 Difference]: Finished difference Result 12316 states and 33055 transitions. [2021-08-21 11:51:46,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:46,227 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:46,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:46,246 INFO L225 Difference]: With dead ends: 12316 [2021-08-21 11:51:46,247 INFO L226 Difference]: Without dead ends: 12316 [2021-08-21 11:51:46,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2021-08-21 11:51:46,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 5766. [2021-08-21 11:51:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5766 states, 5764 states have (on average 2.7047189451769604) internal successors, (15590), 5765 states have internal predecessors, (15590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5766 states to 5766 states and 15590 transitions. [2021-08-21 11:51:46,371 INFO L78 Accepts]: Start accepts. Automaton has 5766 states and 15590 transitions. Word has length 114 [2021-08-21 11:51:46,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:46,372 INFO L470 AbstractCegarLoop]: Abstraction has 5766 states and 15590 transitions. [2021-08-21 11:51:46,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:46,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5766 states and 15590 transitions. [2021-08-21 11:51:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:46,379 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:46,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:46,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-08-21 11:51:46,379 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:46,379 INFO L82 PathProgramCache]: Analyzing trace with hash 774079534, now seen corresponding path program 204 times [2021-08-21 11:51:46,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:46,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977865469] [2021-08-21 11:51:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:46,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:46,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:46,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977865469] [2021-08-21 11:51:46,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977865469] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:46,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:46,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:46,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427661614] [2021-08-21 11:51:46,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:46,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:46,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:46,776 INFO L87 Difference]: Start difference. First operand 5766 states and 15590 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:48,217 INFO L93 Difference]: Finished difference Result 11726 states and 31133 transitions. [2021-08-21 11:51:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:48,235 INFO L225 Difference]: With dead ends: 11726 [2021-08-21 11:51:48,235 INFO L226 Difference]: Without dead ends: 11726 [2021-08-21 11:51:48,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1253.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11726 states. [2021-08-21 11:51:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11726 to 5718. [2021-08-21 11:51:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7032890132960112) internal successors, (15452), 5717 states have internal predecessors, (15452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15452 transitions. [2021-08-21 11:51:48,348 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15452 transitions. Word has length 114 [2021-08-21 11:51:48,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:48,349 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15452 transitions. [2021-08-21 11:51:48,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15452 transitions. [2021-08-21 11:51:48,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:48,355 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:48,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:48,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-08-21 11:51:48,355 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:48,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:48,356 INFO L82 PathProgramCache]: Analyzing trace with hash 686698258, now seen corresponding path program 205 times [2021-08-21 11:51:48,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:48,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515102862] [2021-08-21 11:51:48,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:48,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:48,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:48,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:48,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515102862] [2021-08-21 11:51:48,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515102862] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:48,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:48,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:48,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836083590] [2021-08-21 11:51:48,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:48,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:48,756 INFO L87 Difference]: Start difference. First operand 5718 states and 15452 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:50,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:50,187 INFO L93 Difference]: Finished difference Result 11796 states and 31443 transitions. [2021-08-21 11:51:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:50,205 INFO L225 Difference]: With dead ends: 11796 [2021-08-21 11:51:50,205 INFO L226 Difference]: Without dead ends: 11796 [2021-08-21 11:51:50,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1189.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11796 states. [2021-08-21 11:51:50,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11796 to 5702. [2021-08-21 11:51:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7028070175438597) internal successors, (15406), 5701 states have internal predecessors, (15406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15406 transitions. [2021-08-21 11:51:50,358 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15406 transitions. Word has length 114 [2021-08-21 11:51:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15406 transitions. [2021-08-21 11:51:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15406 transitions. [2021-08-21 11:51:50,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:50,365 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:50,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:50,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-08-21 11:51:50,365 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:50,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:50,365 INFO L82 PathProgramCache]: Analyzing trace with hash 558830924, now seen corresponding path program 206 times [2021-08-21 11:51:50,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:50,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757257314] [2021-08-21 11:51:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:50,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:50,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:50,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757257314] [2021-08-21 11:51:50,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757257314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:50,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:50,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:50,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951898779] [2021-08-21 11:51:50,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:50,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:50,767 INFO L87 Difference]: Start difference. First operand 5702 states and 15406 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:52,164 INFO L93 Difference]: Finished difference Result 8651 states and 23151 transitions. [2021-08-21 11:51:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:52,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:52,177 INFO L225 Difference]: With dead ends: 8651 [2021-08-21 11:51:52,177 INFO L226 Difference]: Without dead ends: 8651 [2021-08-21 11:51:52,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1187.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8651 states. [2021-08-21 11:51:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8651 to 5558. [2021-08-21 11:51:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5556 states have (on average 2.697264218862491) internal successors, (14986), 5557 states have internal predecessors, (14986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 14986 transitions. [2021-08-21 11:51:52,275 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 14986 transitions. Word has length 114 [2021-08-21 11:51:52,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:52,275 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 14986 transitions. [2021-08-21 11:51:52,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 14986 transitions. [2021-08-21 11:51:52,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:52,283 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:52,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:52,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-08-21 11:51:52,283 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1197127696, now seen corresponding path program 207 times [2021-08-21 11:51:52,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:52,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644881907] [2021-08-21 11:51:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:52,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:52,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:52,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644881907] [2021-08-21 11:51:52,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644881907] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:52,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:52,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:52,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705194511] [2021-08-21 11:51:52,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:52,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:52,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:52,782 INFO L87 Difference]: Start difference. First operand 5558 states and 14986 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:54,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:54,328 INFO L93 Difference]: Finished difference Result 19437 states and 51763 transitions. [2021-08-21 11:51:54,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:54,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:54,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:54,360 INFO L225 Difference]: With dead ends: 19437 [2021-08-21 11:51:54,361 INFO L226 Difference]: Without dead ends: 19437 [2021-08-21 11:51:54,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1298.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:54,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19437 states. [2021-08-21 11:51:54,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19437 to 5734. [2021-08-21 11:51:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:51:54,532 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:51:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:54,533 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:51:54,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:51:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:54,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:54,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:54,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-08-21 11:51:54,539 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:54,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:54,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2026820112, now seen corresponding path program 208 times [2021-08-21 11:51:54,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:54,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146513931] [2021-08-21 11:51:54,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:54,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:54,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:54,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146513931] [2021-08-21 11:51:54,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146513931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:54,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:54,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:54,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803925698] [2021-08-21 11:51:54,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:54,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:54,929 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:56,465 INFO L93 Difference]: Finished difference Result 21865 states and 58120 transitions. [2021-08-21 11:51:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:56,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:56,500 INFO L225 Difference]: With dead ends: 21865 [2021-08-21 11:51:56,500 INFO L226 Difference]: Without dead ends: 21865 [2021-08-21 11:51:56,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1253.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21865 states. [2021-08-21 11:51:56,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21865 to 5750. [2021-08-21 11:51:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7032011134307585) internal successors, (15538), 5749 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15538 transitions. [2021-08-21 11:51:56,678 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15538 transitions. Word has length 114 [2021-08-21 11:51:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:56,678 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15538 transitions. [2021-08-21 11:51:56,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15538 transitions. [2021-08-21 11:51:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:56,685 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:56,685 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:56,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-08-21 11:51:56,685 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:56,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:56,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1029027086, now seen corresponding path program 209 times [2021-08-21 11:51:56,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:56,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295128392] [2021-08-21 11:51:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:56,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:57,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:57,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295128392] [2021-08-21 11:51:57,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295128392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:57,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:57,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:57,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868328585] [2021-08-21 11:51:57,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:57,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:57,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:57,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:57,060 INFO L87 Difference]: Start difference. First operand 5750 states and 15538 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:58,514 INFO L93 Difference]: Finished difference Result 20265 states and 53640 transitions. [2021-08-21 11:51:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:51:58,514 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:51:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:58,543 INFO L225 Difference]: With dead ends: 20265 [2021-08-21 11:51:58,543 INFO L226 Difference]: Without dead ends: 20265 [2021-08-21 11:51:58,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:51:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20265 states. [2021-08-21 11:51:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20265 to 5702. [2021-08-21 11:51:58,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:51:58,686 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:51:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:58,686 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:51:58,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:58,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:51:58,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:51:58,692 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:58,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:58,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-08-21 11:51:58,692 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:51:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:58,692 INFO L82 PathProgramCache]: Analyzing trace with hash 108654510, now seen corresponding path program 210 times [2021-08-21 11:51:58,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:58,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216236305] [2021-08-21 11:51:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:58,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:59,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:59,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216236305] [2021-08-21 11:51:59,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216236305] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:59,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:59,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:51:59,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925937745] [2021-08-21 11:51:59,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:51:59,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:51:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:51:59,083 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:00,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:00,596 INFO L93 Difference]: Finished difference Result 23085 states and 61087 transitions. [2021-08-21 11:52:00,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:00,596 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:00,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:00,629 INFO L225 Difference]: With dead ends: 23085 [2021-08-21 11:52:00,630 INFO L226 Difference]: Without dead ends: 23085 [2021-08-21 11:52:00,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1250.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2021-08-21 11:52:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 5734. [2021-08-21 11:52:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:00,790 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:00,791 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:00,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:00,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:00,796 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:00,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:00,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-08-21 11:52:00,796 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:00,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:00,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1130465588, now seen corresponding path program 211 times [2021-08-21 11:52:00,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:00,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154759240] [2021-08-21 11:52:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:00,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:01,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:01,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:01,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154759240] [2021-08-21 11:52:01,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154759240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:01,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:01,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:01,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449058682] [2021-08-21 11:52:01,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:01,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:01,182 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:02,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:02,678 INFO L93 Difference]: Finished difference Result 23858 states and 62819 transitions. [2021-08-21 11:52:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:02,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:02,715 INFO L225 Difference]: With dead ends: 23858 [2021-08-21 11:52:02,715 INFO L226 Difference]: Without dead ends: 23858 [2021-08-21 11:52:02,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1237.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23858 states. [2021-08-21 11:52:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23858 to 5718. [2021-08-21 11:52:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7022393282015393) internal successors, (15446), 5717 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15446 transitions. [2021-08-21 11:52:02,908 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15446 transitions. Word has length 114 [2021-08-21 11:52:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:02,908 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15446 transitions. [2021-08-21 11:52:02,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15446 transitions. [2021-08-21 11:52:02,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:02,914 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:02,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:02,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-08-21 11:52:02,914 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:02,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:02,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1954160112, now seen corresponding path program 212 times [2021-08-21 11:52:02,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:02,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92753475] [2021-08-21 11:52:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:02,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:03,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:03,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92753475] [2021-08-21 11:52:03,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92753475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:03,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:03,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:03,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911847822] [2021-08-21 11:52:03,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:03,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:03,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:03,311 INFO L87 Difference]: Start difference. First operand 5718 states and 15446 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:04,815 INFO L93 Difference]: Finished difference Result 23224 states and 61304 transitions. [2021-08-21 11:52:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:04,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:04,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:04,900 INFO L225 Difference]: With dead ends: 23224 [2021-08-21 11:52:04,900 INFO L226 Difference]: Without dead ends: 23224 [2021-08-21 11:52:04,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1284.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23224 states. [2021-08-21 11:52:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23224 to 5734. [2021-08-21 11:52:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:05,063 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:05,063 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:05,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:05,072 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:05,072 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:05,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-08-21 11:52:05,073 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1022141484, now seen corresponding path program 213 times [2021-08-21 11:52:05,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:05,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786677454] [2021-08-21 11:52:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:05,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:05,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:05,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786677454] [2021-08-21 11:52:05,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786677454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:05,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:05,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:05,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839631277] [2021-08-21 11:52:05,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:05,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:05,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:05,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:05,509 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:06,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:06,969 INFO L93 Difference]: Finished difference Result 20449 states and 54142 transitions. [2021-08-21 11:52:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:07,000 INFO L225 Difference]: With dead ends: 20449 [2021-08-21 11:52:07,000 INFO L226 Difference]: Without dead ends: 20449 [2021-08-21 11:52:07,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1267.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20449 states. [2021-08-21 11:52:07,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20449 to 5670. [2021-08-21 11:52:07,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:52:07,204 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:52:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:07,204 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:52:07,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:07,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:52:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:07,210 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:07,210 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:07,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-08-21 11:52:07,210 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:07,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:07,211 INFO L82 PathProgramCache]: Analyzing trace with hash -2133458222, now seen corresponding path program 214 times [2021-08-21 11:52:07,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:07,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317046391] [2021-08-21 11:52:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:07,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:07,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:07,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317046391] [2021-08-21 11:52:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317046391] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:07,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:07,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:07,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594566589] [2021-08-21 11:52:07,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:07,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:07,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:07,628 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:09,081 INFO L93 Difference]: Finished difference Result 19671 states and 52297 transitions. [2021-08-21 11:52:09,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:09,111 INFO L225 Difference]: With dead ends: 19671 [2021-08-21 11:52:09,111 INFO L226 Difference]: Without dead ends: 19671 [2021-08-21 11:52:09,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19671 states. [2021-08-21 11:52:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19671 to 5734. [2021-08-21 11:52:09,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:09,275 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:09,275 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:09,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:09,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:09,282 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:09,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:09,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-08-21 11:52:09,282 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:09,282 INFO L82 PathProgramCache]: Analyzing trace with hash 922388976, now seen corresponding path program 215 times [2021-08-21 11:52:09,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:09,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632441512] [2021-08-21 11:52:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:09,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:09,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:09,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632441512] [2021-08-21 11:52:09,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632441512] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:09,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:09,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:09,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977462636] [2021-08-21 11:52:09,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:09,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:09,697 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:11,219 INFO L93 Difference]: Finished difference Result 20444 states and 54029 transitions. [2021-08-21 11:52:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:11,220 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:11,254 INFO L225 Difference]: With dead ends: 20444 [2021-08-21 11:52:11,254 INFO L226 Difference]: Without dead ends: 20444 [2021-08-21 11:52:11,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1243.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20444 states. [2021-08-21 11:52:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20444 to 5718. [2021-08-21 11:52:11,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7022393282015393) internal successors, (15446), 5717 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:11,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15446 transitions. [2021-08-21 11:52:11,436 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15446 transitions. Word has length 114 [2021-08-21 11:52:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:11,437 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15446 transitions. [2021-08-21 11:52:11,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15446 transitions. [2021-08-21 11:52:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:11,443 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:11,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:11,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-08-21 11:52:11,443 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:11,444 INFO L82 PathProgramCache]: Analyzing trace with hash -287952620, now seen corresponding path program 216 times [2021-08-21 11:52:11,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:11,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298476121] [2021-08-21 11:52:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:11,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:11,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:11,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298476121] [2021-08-21 11:52:11,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298476121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:11,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:11,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:11,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940508970] [2021-08-21 11:52:11,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:11,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:11,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:11,864 INFO L87 Difference]: Start difference. First operand 5718 states and 15446 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:13,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:13,332 INFO L93 Difference]: Finished difference Result 23387 states and 61647 transitions. [2021-08-21 11:52:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:13,333 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:13,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:13,374 INFO L225 Difference]: With dead ends: 23387 [2021-08-21 11:52:13,374 INFO L226 Difference]: Without dead ends: 23387 [2021-08-21 11:52:13,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1267.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:13,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23387 states. [2021-08-21 11:52:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23387 to 5734. [2021-08-21 11:52:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:13,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:13,570 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:13,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:13,570 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:13,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:13,576 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:13,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:13,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-08-21 11:52:13,576 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:13,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:13,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1219971248, now seen corresponding path program 217 times [2021-08-21 11:52:13,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:13,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985422044] [2021-08-21 11:52:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:13,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:13,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:13,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985422044] [2021-08-21 11:52:13,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985422044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:13,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:13,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:13,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068192213] [2021-08-21 11:52:13,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:13,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:13,970 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:15,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:15,443 INFO L93 Difference]: Finished difference Result 20612 states and 54485 transitions. [2021-08-21 11:52:15,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:15,474 INFO L225 Difference]: With dead ends: 20612 [2021-08-21 11:52:15,474 INFO L226 Difference]: Without dead ends: 20612 [2021-08-21 11:52:15,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1269.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:15,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20612 states. [2021-08-21 11:52:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20612 to 5702. [2021-08-21 11:52:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:15,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:52:15,637 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:52:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:15,637 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:52:15,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:15,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:52:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:15,643 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:15,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:15,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-08-21 11:52:15,644 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:15,644 INFO L82 PathProgramCache]: Analyzing trace with hash -155194866, now seen corresponding path program 218 times [2021-08-21 11:52:15,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:15,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039065033] [2021-08-21 11:52:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:15,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:16,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:16,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039065033] [2021-08-21 11:52:16,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039065033] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:16,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:16,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:16,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274246390] [2021-08-21 11:52:16,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:16,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:16,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:16,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:16,057 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:17,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:17,592 INFO L93 Difference]: Finished difference Result 19794 states and 52468 transitions. [2021-08-21 11:52:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:17,592 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:17,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:17,622 INFO L225 Difference]: With dead ends: 19794 [2021-08-21 11:52:17,622 INFO L226 Difference]: Without dead ends: 19794 [2021-08-21 11:52:17,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1268.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:17,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19794 states. [2021-08-21 11:52:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19794 to 5750. [2021-08-21 11:52:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7032011134307585) internal successors, (15538), 5749 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:17,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15538 transitions. [2021-08-21 11:52:17,784 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15538 transitions. Word has length 114 [2021-08-21 11:52:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:17,785 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15538 transitions. [2021-08-21 11:52:17,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:17,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15538 transitions. [2021-08-21 11:52:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:17,791 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:17,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:17,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-08-21 11:52:17,792 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1087213494, now seen corresponding path program 219 times [2021-08-21 11:52:17,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:17,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516965488] [2021-08-21 11:52:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:17,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:18,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:18,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516965488] [2021-08-21 11:52:18,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516965488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:18,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:18,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:18,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971478187] [2021-08-21 11:52:18,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:18,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:18,205 INFO L87 Difference]: Start difference. First operand 5750 states and 15538 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:19,691 INFO L93 Difference]: Finished difference Result 19694 states and 52186 transitions. [2021-08-21 11:52:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:19,723 INFO L225 Difference]: With dead ends: 19694 [2021-08-21 11:52:19,724 INFO L226 Difference]: Without dead ends: 19694 [2021-08-21 11:52:19,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1267.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:19,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19694 states. [2021-08-21 11:52:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 5734. [2021-08-21 11:52:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:19,888 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:19,888 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:19,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:19,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:19,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:19,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-08-21 11:52:19,895 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:19,895 INFO L82 PathProgramCache]: Analyzing trace with hash -283948878, now seen corresponding path program 220 times [2021-08-21 11:52:19,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:19,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285571413] [2021-08-21 11:52:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:19,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:20,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:20,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285571413] [2021-08-21 11:52:20,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285571413] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:20,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:20,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:20,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410786522] [2021-08-21 11:52:20,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:20,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:20,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:20,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:20,299 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:21,845 INFO L93 Difference]: Finished difference Result 17237 states and 45852 transitions. [2021-08-21 11:52:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:21,871 INFO L225 Difference]: With dead ends: 17237 [2021-08-21 11:52:21,871 INFO L226 Difference]: Without dead ends: 17237 [2021-08-21 11:52:21,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1290.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17237 states. [2021-08-21 11:52:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17237 to 5606. [2021-08-21 11:52:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5604 states have (on average 2.698786581013562) internal successors, (15124), 5605 states have internal predecessors, (15124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 15124 transitions. [2021-08-21 11:52:22,015 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 15124 transitions. Word has length 114 [2021-08-21 11:52:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:22,015 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 15124 transitions. [2021-08-21 11:52:22,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 15124 transitions. [2021-08-21 11:52:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:22,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:22,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:22,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-08-21 11:52:22,022 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:22,022 INFO L82 PathProgramCache]: Analyzing trace with hash 359107056, now seen corresponding path program 221 times [2021-08-21 11:52:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:22,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845416003] [2021-08-21 11:52:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:22,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:22,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:22,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845416003] [2021-08-21 11:52:22,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845416003] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:22,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:22,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:22,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612038534] [2021-08-21 11:52:22,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:22,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:22,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:22,413 INFO L87 Difference]: Start difference. First operand 5606 states and 15124 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:23,947 INFO L93 Difference]: Finished difference Result 19789 states and 52661 transitions. [2021-08-21 11:52:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:23,980 INFO L225 Difference]: With dead ends: 19789 [2021-08-21 11:52:23,980 INFO L226 Difference]: Without dead ends: 19789 [2021-08-21 11:52:23,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1227.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:24,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19789 states. [2021-08-21 11:52:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19789 to 5686. [2021-08-21 11:52:24,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:52:24,172 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:52:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:24,172 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:52:24,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:52:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:24,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:24,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:24,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-08-21 11:52:24,179 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:24,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:24,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1430126544, now seen corresponding path program 222 times [2021-08-21 11:52:24,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:24,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965602555] [2021-08-21 11:52:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:24,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:24,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:24,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965602555] [2021-08-21 11:52:24,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965602555] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:24,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:24,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:24,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267162203] [2021-08-21 11:52:24,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:24,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:24,569 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:26,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:26,047 INFO L93 Difference]: Finished difference Result 22217 states and 59018 transitions. [2021-08-21 11:52:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:26,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:26,081 INFO L225 Difference]: With dead ends: 22217 [2021-08-21 11:52:26,082 INFO L226 Difference]: Without dead ends: 22217 [2021-08-21 11:52:26,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1227.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22217 states. [2021-08-21 11:52:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22217 to 5702. [2021-08-21 11:52:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:52:26,304 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:52:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:26,304 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:52:26,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:52:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:26,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:26,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:26,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-08-21 11:52:26,311 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:26,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:26,311 INFO L82 PathProgramCache]: Analyzing trace with hash 191006446, now seen corresponding path program 223 times [2021-08-21 11:52:26,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:26,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567672838] [2021-08-21 11:52:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:26,311 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:26,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:26,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:26,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567672838] [2021-08-21 11:52:26,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567672838] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:26,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:26,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:26,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608254408] [2021-08-21 11:52:26,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:26,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:26,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:26,698 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:28,227 INFO L93 Difference]: Finished difference Result 20617 states and 54538 transitions. [2021-08-21 11:52:28,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:28,227 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:28,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:28,260 INFO L225 Difference]: With dead ends: 20617 [2021-08-21 11:52:28,261 INFO L226 Difference]: Without dead ends: 20617 [2021-08-21 11:52:28,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1227.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20617 states. [2021-08-21 11:52:28,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20617 to 5654. [2021-08-21 11:52:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.700283085633404) internal successors, (15262), 5653 states have internal predecessors, (15262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15262 transitions. [2021-08-21 11:52:28,452 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15262 transitions. Word has length 114 [2021-08-21 11:52:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:28,452 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15262 transitions. [2021-08-21 11:52:28,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15262 transitions. [2021-08-21 11:52:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:28,461 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:28,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:28,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-08-21 11:52:28,462 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash -729366130, now seen corresponding path program 224 times [2021-08-21 11:52:28,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:28,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108083119] [2021-08-21 11:52:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:28,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:28,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:28,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:28,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108083119] [2021-08-21 11:52:28,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108083119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:28,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:28,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:28,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656645600] [2021-08-21 11:52:28,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:28,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:28,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:28,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:28,880 INFO L87 Difference]: Start difference. First operand 5654 states and 15262 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:30,399 INFO L93 Difference]: Finished difference Result 19895 states and 52827 transitions. [2021-08-21 11:52:30,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:30,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:30,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:30,432 INFO L225 Difference]: With dead ends: 19895 [2021-08-21 11:52:30,432 INFO L226 Difference]: Without dead ends: 19895 [2021-08-21 11:52:30,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1231.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19895 states. [2021-08-21 11:52:30,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19895 to 5686. [2021-08-21 11:52:30,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:30,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:52:30,607 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:52:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:30,608 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:52:30,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:52:30,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:30,614 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:30,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:30,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-08-21 11:52:30,614 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:30,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:30,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1968486228, now seen corresponding path program 225 times [2021-08-21 11:52:30,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:30,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38498155] [2021-08-21 11:52:30,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:30,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:31,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:31,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38498155] [2021-08-21 11:52:31,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38498155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:31,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:31,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:31,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858837048] [2021-08-21 11:52:31,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:31,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:31,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:31,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:31,153 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:32,618 INFO L93 Difference]: Finished difference Result 20668 states and 54559 transitions. [2021-08-21 11:52:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:32,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:32,651 INFO L225 Difference]: With dead ends: 20668 [2021-08-21 11:52:32,651 INFO L226 Difference]: Without dead ends: 20668 [2021-08-21 11:52:32,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1339.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20668 states. [2021-08-21 11:52:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20668 to 5670. [2021-08-21 11:52:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:52:32,834 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:52:32,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:32,834 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:52:32,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:52:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:32,841 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:32,841 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:32,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-08-21 11:52:32,841 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1116139472, now seen corresponding path program 226 times [2021-08-21 11:52:32,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:32,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645676834] [2021-08-21 11:52:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:32,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:33,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:33,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645676834] [2021-08-21 11:52:33,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645676834] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:33,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:33,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:33,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505095567] [2021-08-21 11:52:33,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:33,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:33,235 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:34,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:34,716 INFO L93 Difference]: Finished difference Result 20034 states and 53044 transitions. [2021-08-21 11:52:34,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:34,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:34,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:34,749 INFO L225 Difference]: With dead ends: 20034 [2021-08-21 11:52:34,749 INFO L226 Difference]: Without dead ends: 20034 [2021-08-21 11:52:34,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1266.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:34,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20034 states. [2021-08-21 11:52:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20034 to 5686. [2021-08-21 11:52:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:52:34,922 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:52:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:34,922 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:52:34,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:52:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:34,929 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:34,929 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:34,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-08-21 11:52:34,930 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash 184120844, now seen corresponding path program 227 times [2021-08-21 11:52:34,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:34,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62099103] [2021-08-21 11:52:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:34,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:35,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:35,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62099103] [2021-08-21 11:52:35,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62099103] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:35,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129068473] [2021-08-21 11:52:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:35,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:35,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:35,332 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:36,834 INFO L93 Difference]: Finished difference Result 17541 states and 46596 transitions. [2021-08-21 11:52:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:36,862 INFO L225 Difference]: With dead ends: 17541 [2021-08-21 11:52:36,862 INFO L226 Difference]: Without dead ends: 17541 [2021-08-21 11:52:36,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1288.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17541 states. [2021-08-21 11:52:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17541 to 5622. [2021-08-21 11:52:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 2.699288256227758) internal successors, (15170), 5621 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 15170 transitions. [2021-08-21 11:52:37,017 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 15170 transitions. Word has length 114 [2021-08-21 11:52:37,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:37,017 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 15170 transitions. [2021-08-21 11:52:37,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 15170 transitions. [2021-08-21 11:52:37,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:37,024 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:37,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:37,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-08-21 11:52:37,024 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:37,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1187583248, now seen corresponding path program 228 times [2021-08-21 11:52:37,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:37,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729869929] [2021-08-21 11:52:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:37,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:37,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:37,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729869929] [2021-08-21 11:52:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729869929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:37,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:37,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:37,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171802746] [2021-08-21 11:52:37,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:37,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:37,419 INFO L87 Difference]: Start difference. First operand 5622 states and 15170 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:38,895 INFO L93 Difference]: Finished difference Result 17971 states and 48064 transitions. [2021-08-21 11:52:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:38,924 INFO L225 Difference]: With dead ends: 17971 [2021-08-21 11:52:38,924 INFO L226 Difference]: Without dead ends: 17971 [2021-08-21 11:52:38,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1230.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17971 states. [2021-08-21 11:52:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17971 to 5670. [2021-08-21 11:52:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:52:39,082 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:52:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:39,082 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:52:39,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:52:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:39,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:39,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:39,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-08-21 11:52:39,089 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:39,089 INFO L82 PathProgramCache]: Analyzing trace with hash -116563760, now seen corresponding path program 229 times [2021-08-21 11:52:39,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:39,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055536669] [2021-08-21 11:52:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:39,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:39,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:39,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055536669] [2021-08-21 11:52:39,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055536669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:39,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:39,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:39,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109866400] [2021-08-21 11:52:39,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:39,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:39,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:39,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:39,473 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:40,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:40,992 INFO L93 Difference]: Finished difference Result 18043 states and 48196 transitions. [2021-08-21 11:52:40,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:41,021 INFO L225 Difference]: With dead ends: 18043 [2021-08-21 11:52:41,021 INFO L226 Difference]: Without dead ends: 18043 [2021-08-21 11:52:41,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1203.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18043 states. [2021-08-21 11:52:41,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18043 to 5686. [2021-08-21 11:52:41,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:52:41,174 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:52:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:41,175 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:52:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:52:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:41,181 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:41,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:41,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-08-21 11:52:41,181 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:41,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:41,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1355683858, now seen corresponding path program 230 times [2021-08-21 11:52:41,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:41,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028198396] [2021-08-21 11:52:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:41,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:41,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:41,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028198396] [2021-08-21 11:52:41,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028198396] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:41,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:41,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:41,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915210371] [2021-08-21 11:52:41,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:41,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:41,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:41,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:41,572 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:43,086 INFO L93 Difference]: Finished difference Result 17453 states and 46274 transitions. [2021-08-21 11:52:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:43,117 INFO L225 Difference]: With dead ends: 17453 [2021-08-21 11:52:43,117 INFO L226 Difference]: Without dead ends: 17453 [2021-08-21 11:52:43,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1223.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:43,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17453 states. [2021-08-21 11:52:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17453 to 5638. [2021-08-21 11:52:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5636 states have (on average 2.699787083037615) internal successors, (15216), 5637 states have internal predecessors, (15216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 15216 transitions. [2021-08-21 11:52:43,307 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 15216 transitions. Word has length 114 [2021-08-21 11:52:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:43,307 INFO L470 AbstractCegarLoop]: Abstraction has 5638 states and 15216 transitions. [2021-08-21 11:52:43,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 15216 transitions. [2021-08-21 11:52:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:43,314 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:43,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:43,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-08-21 11:52:43,314 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:43,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1443065134, now seen corresponding path program 231 times [2021-08-21 11:52:43,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:43,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141814296] [2021-08-21 11:52:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:43,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:43,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:43,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141814296] [2021-08-21 11:52:43,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141814296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:43,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:43,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:43,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419125910] [2021-08-21 11:52:43,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:43,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:43,712 INFO L87 Difference]: Start difference. First operand 5638 states and 15216 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:45,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:45,150 INFO L93 Difference]: Finished difference Result 14441 states and 38457 transitions. [2021-08-21 11:52:45,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:45,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:45,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:45,173 INFO L225 Difference]: With dead ends: 14441 [2021-08-21 11:52:45,173 INFO L226 Difference]: Without dead ends: 14441 [2021-08-21 11:52:45,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1197.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:45,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14441 states. [2021-08-21 11:52:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14441 to 5574. [2021-08-21 11:52:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.6977745872218235) internal successors, (15032), 5573 states have internal predecessors, (15032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15032 transitions. [2021-08-21 11:52:45,300 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15032 transitions. Word has length 114 [2021-08-21 11:52:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:45,300 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15032 transitions. [2021-08-21 11:52:45,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:45,300 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15032 transitions. [2021-08-21 11:52:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:45,306 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:45,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:45,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-08-21 11:52:45,307 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:45,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1800780306, now seen corresponding path program 232 times [2021-08-21 11:52:45,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:45,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900965091] [2021-08-21 11:52:45,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:45,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:45,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:45,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900965091] [2021-08-21 11:52:45,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900965091] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:45,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:45,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:45,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969909955] [2021-08-21 11:52:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:45,740 INFO L87 Difference]: Start difference. First operand 5574 states and 15032 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:47,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:47,209 INFO L93 Difference]: Finished difference Result 13090 states and 34742 transitions. [2021-08-21 11:52:47,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:47,209 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:47,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:47,230 INFO L225 Difference]: With dead ends: 13090 [2021-08-21 11:52:47,230 INFO L226 Difference]: Without dead ends: 13090 [2021-08-21 11:52:47,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1215.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-08-21 11:52:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 5734. [2021-08-21 11:52:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:47,352 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:47,352 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:47,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:47,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:47,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:47,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:47,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-08-21 11:52:47,358 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash -729760818, now seen corresponding path program 233 times [2021-08-21 11:52:47,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:47,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279609083] [2021-08-21 11:52:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:47,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:47,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:47,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:47,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279609083] [2021-08-21 11:52:47,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279609083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:47,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:47,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:47,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155468955] [2021-08-21 11:52:47,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:47,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:47,751 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:49,263 INFO L93 Difference]: Finished difference Result 15518 states and 41099 transitions. [2021-08-21 11:52:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:49,288 INFO L225 Difference]: With dead ends: 15518 [2021-08-21 11:52:49,288 INFO L226 Difference]: Without dead ends: 15518 [2021-08-21 11:52:49,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1221.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15518 states. [2021-08-21 11:52:49,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15518 to 5750. [2021-08-21 11:52:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7032011134307585) internal successors, (15538), 5749 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15538 transitions. [2021-08-21 11:52:49,424 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15538 transitions. Word has length 114 [2021-08-21 11:52:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:49,424 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15538 transitions. [2021-08-21 11:52:49,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15538 transitions. [2021-08-21 11:52:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:49,430 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:49,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:49,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-08-21 11:52:49,431 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:49,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:49,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1968880916, now seen corresponding path program 234 times [2021-08-21 11:52:49,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:49,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619351468] [2021-08-21 11:52:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:49,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:49,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:49,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619351468] [2021-08-21 11:52:49,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619351468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:49,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:49,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:49,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444032262] [2021-08-21 11:52:49,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:49,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:49,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:49,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:49,850 INFO L87 Difference]: Start difference. First operand 5750 states and 15538 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:51,318 INFO L93 Difference]: Finished difference Result 13918 states and 36619 transitions. [2021-08-21 11:52:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:51,319 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:51,340 INFO L225 Difference]: With dead ends: 13918 [2021-08-21 11:52:51,340 INFO L226 Difference]: Without dead ends: 13918 [2021-08-21 11:52:51,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1261.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:51,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13918 states. [2021-08-21 11:52:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13918 to 5702. [2021-08-21 11:52:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:52:51,466 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:52:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:51,466 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:52:51,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:52:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:51,472 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:51,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:51,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-08-21 11:52:51,472 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1405713804, now seen corresponding path program 235 times [2021-08-21 11:52:51,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:51,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457014904] [2021-08-21 11:52:51,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:51,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:51,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:51,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457014904] [2021-08-21 11:52:51,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457014904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:51,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:51,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:51,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062123817] [2021-08-21 11:52:51,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:51,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:51,872 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:53,382 INFO L93 Difference]: Finished difference Result 16738 states and 44066 transitions. [2021-08-21 11:52:53,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:53,383 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:53,410 INFO L225 Difference]: With dead ends: 16738 [2021-08-21 11:52:53,410 INFO L226 Difference]: Without dead ends: 16738 [2021-08-21 11:52:53,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1256.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:53,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16738 states. [2021-08-21 11:52:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16738 to 5734. [2021-08-21 11:52:53,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:53,559 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:53,560 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:53,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:53,566 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:53,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:53,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-08-21 11:52:53,566 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:53,567 INFO L82 PathProgramCache]: Analyzing trace with hash 166593706, now seen corresponding path program 236 times [2021-08-21 11:52:53,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:53,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234862706] [2021-08-21 11:52:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:53,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:53,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:53,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234862706] [2021-08-21 11:52:53,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234862706] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:53,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:53,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:53,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619562669] [2021-08-21 11:52:53,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:53,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:53,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:53,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:53,950 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:55,483 INFO L93 Difference]: Finished difference Result 17511 states and 45798 transitions. [2021-08-21 11:52:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:55,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:55,511 INFO L225 Difference]: With dead ends: 17511 [2021-08-21 11:52:55,511 INFO L226 Difference]: Without dead ends: 17511 [2021-08-21 11:52:55,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17511 states. [2021-08-21 11:52:55,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17511 to 5718. [2021-08-21 11:52:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7022393282015393) internal successors, (15446), 5717 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15446 transitions. [2021-08-21 11:52:55,669 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15446 transitions. Word has length 114 [2021-08-21 11:52:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:55,669 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15446 transitions. [2021-08-21 11:52:55,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15446 transitions. [2021-08-21 11:52:55,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:55,676 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:55,676 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:55,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-08-21 11:52:55,676 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:55,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:55,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1043747890, now seen corresponding path program 237 times [2021-08-21 11:52:55,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:55,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662371196] [2021-08-21 11:52:55,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:55,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:56,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:56,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:56,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662371196] [2021-08-21 11:52:56,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662371196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:56,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:56,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:56,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527697701] [2021-08-21 11:52:56,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:56,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:56,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:56,068 INFO L87 Difference]: Start difference. First operand 5718 states and 15446 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:57,560 INFO L93 Difference]: Finished difference Result 16877 states and 44283 transitions. [2021-08-21 11:52:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:57,560 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:57,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:57,589 INFO L225 Difference]: With dead ends: 16877 [2021-08-21 11:52:57,589 INFO L226 Difference]: Without dead ends: 16877 [2021-08-21 11:52:57,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1257.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16877 states. [2021-08-21 11:52:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16877 to 5734. [2021-08-21 11:52:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:52:57,771 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:52:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:57,772 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:52:57,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:52:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:57,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:57,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:57,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-08-21 11:52:57,779 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:57,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:57,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1975766518, now seen corresponding path program 238 times [2021-08-21 11:52:57,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:57,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261411795] [2021-08-21 11:52:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:57,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:58,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:58,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261411795] [2021-08-21 11:52:58,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261411795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:58,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:58,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:52:58,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688262915] [2021-08-21 11:52:58,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:52:58,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:52:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:52:58,175 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:59,669 INFO L93 Difference]: Finished difference Result 14102 states and 37121 transitions. [2021-08-21 11:52:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:52:59,669 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:52:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:59,693 INFO L225 Difference]: With dead ends: 14102 [2021-08-21 11:52:59,694 INFO L226 Difference]: Without dead ends: 14102 [2021-08-21 11:52:59,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1270.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:52:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2021-08-21 11:52:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 5670. [2021-08-21 11:52:59,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:52:59,834 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:52:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:59,834 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:52:59,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:52:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:52:59,841 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:59,841 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:59,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-08-21 11:52:59,841 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:52:59,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:59,841 INFO L82 PathProgramCache]: Analyzing trace with hash -836398928, now seen corresponding path program 239 times [2021-08-21 11:52:59,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:59,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763891692] [2021-08-21 11:52:59,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:59,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:00,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:00,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763891692] [2021-08-21 11:53:00,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763891692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:00,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:00,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:00,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562227205] [2021-08-21 11:53:00,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:00,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:00,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:00,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:00,257 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:01,749 INFO L93 Difference]: Finished difference Result 17266 states and 45536 transitions. [2021-08-21 11:53:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:01,777 INFO L225 Difference]: With dead ends: 17266 [2021-08-21 11:53:01,778 INFO L226 Difference]: Without dead ends: 17266 [2021-08-21 11:53:01,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1224.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17266 states. [2021-08-21 11:53:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17266 to 5734. [2021-08-21 11:53:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:53:01,927 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:53:01,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:01,927 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:53:01,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:01,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:53:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:01,934 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:01,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:01,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-08-21 11:53:01,935 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash -2075519026, now seen corresponding path program 240 times [2021-08-21 11:53:01,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:01,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794907915] [2021-08-21 11:53:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:01,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:02,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:02,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794907915] [2021-08-21 11:53:02,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794907915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:02,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:02,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:02,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505344482] [2021-08-21 11:53:02,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:02,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:02,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:02,326 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:03,807 INFO L93 Difference]: Finished difference Result 18039 states and 47268 transitions. [2021-08-21 11:53:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:03,808 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:03,836 INFO L225 Difference]: With dead ends: 18039 [2021-08-21 11:53:03,836 INFO L226 Difference]: Without dead ends: 18039 [2021-08-21 11:53:03,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1268.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18039 states. [2021-08-21 11:53:03,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18039 to 5718. [2021-08-21 11:53:03,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5716 states have (on average 2.7022393282015393) internal successors, (15446), 5717 states have internal predecessors, (15446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:03,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 15446 transitions. [2021-08-21 11:53:03,990 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 15446 transitions. Word has length 114 [2021-08-21 11:53:03,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:03,990 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 15446 transitions. [2021-08-21 11:53:03,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 15446 transitions. [2021-08-21 11:53:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:03,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:03,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:03,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-08-21 11:53:03,996 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1009106674, now seen corresponding path program 241 times [2021-08-21 11:53:03,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:03,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505656468] [2021-08-21 11:53:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:03,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:04,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:04,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505656468] [2021-08-21 11:53:04,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505656468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:04,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:04,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:04,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217499409] [2021-08-21 11:53:04,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:04,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:04,396 INFO L87 Difference]: Start difference. First operand 5718 states and 15446 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:05,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:05,965 INFO L93 Difference]: Finished difference Result 20982 states and 54886 transitions. [2021-08-21 11:53:05,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:05,965 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:06,000 INFO L225 Difference]: With dead ends: 20982 [2021-08-21 11:53:06,000 INFO L226 Difference]: Without dead ends: 20982 [2021-08-21 11:53:06,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1281.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:06,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20982 states. [2021-08-21 11:53:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20982 to 5734. [2021-08-21 11:53:06,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:06,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:53:06,187 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:53:06,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:06,187 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:53:06,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:53:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:06,194 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:06,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-08-21 11:53:06,194 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash 77088046, now seen corresponding path program 242 times [2021-08-21 11:53:06,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:06,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37848866] [2021-08-21 11:53:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:06,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:06,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:06,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37848866] [2021-08-21 11:53:06,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37848866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:06,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:06,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:06,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468810971] [2021-08-21 11:53:06,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:06,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:06,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:06,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:06,620 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:08,152 INFO L93 Difference]: Finished difference Result 18207 states and 47724 transitions. [2021-08-21 11:53:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:08,182 INFO L225 Difference]: With dead ends: 18207 [2021-08-21 11:53:08,182 INFO L226 Difference]: Without dead ends: 18207 [2021-08-21 11:53:08,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1293.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18207 states. [2021-08-21 11:53:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18207 to 5702. [2021-08-21 11:53:08,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:08,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:53:08,341 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:53:08,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:08,341 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:53:08,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:08,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:53:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:08,348 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:08,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:08,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-08-21 11:53:08,348 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:08,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1141864428, now seen corresponding path program 243 times [2021-08-21 11:53:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:08,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929427490] [2021-08-21 11:53:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:08,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:08,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:08,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:08,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929427490] [2021-08-21 11:53:08,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929427490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:08,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:08,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:08,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455550229] [2021-08-21 11:53:08,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:08,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:08,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:08,745 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:10,287 INFO L93 Difference]: Finished difference Result 17389 states and 45707 transitions. [2021-08-21 11:53:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:10,315 INFO L225 Difference]: With dead ends: 17389 [2021-08-21 11:53:10,315 INFO L226 Difference]: Without dead ends: 17389 [2021-08-21 11:53:10,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1278.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17389 states. [2021-08-21 11:53:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17389 to 5750. [2021-08-21 11:53:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 5748 states have (on average 2.7032011134307585) internal successors, (15538), 5749 states have internal predecessors, (15538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:10,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 15538 transitions. [2021-08-21 11:53:10,465 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 15538 transitions. Word has length 114 [2021-08-21 11:53:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:10,465 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 15538 transitions. [2021-08-21 11:53:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 15538 transitions. [2021-08-21 11:53:10,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:10,472 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:10,472 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:10,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-08-21 11:53:10,472 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash 209845800, now seen corresponding path program 244 times [2021-08-21 11:53:10,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:10,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327309262] [2021-08-21 11:53:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:10,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:10,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:10,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327309262] [2021-08-21 11:53:10,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327309262] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:10,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:10,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:10,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872287614] [2021-08-21 11:53:10,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:10,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:10,871 INFO L87 Difference]: Start difference. First operand 5750 states and 15538 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:12,401 INFO L93 Difference]: Finished difference Result 17289 states and 45425 transitions. [2021-08-21 11:53:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:12,401 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:12,429 INFO L225 Difference]: With dead ends: 17289 [2021-08-21 11:53:12,429 INFO L226 Difference]: Without dead ends: 17289 [2021-08-21 11:53:12,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1250.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17289 states. [2021-08-21 11:53:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17289 to 5734. [2021-08-21 11:53:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5734 states, 5732 states have (on average 2.702721563154222) internal successors, (15492), 5733 states have internal predecessors, (15492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5734 states to 5734 states and 15492 transitions. [2021-08-21 11:53:12,576 INFO L78 Accepts]: Start accepts. Automaton has 5734 states and 15492 transitions. Word has length 114 [2021-08-21 11:53:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:12,576 INFO L470 AbstractCegarLoop]: Abstraction has 5734 states and 15492 transitions. [2021-08-21 11:53:12,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5734 states and 15492 transitions. [2021-08-21 11:53:12,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:12,583 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:12,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:12,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-08-21 11:53:12,583 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:12,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:12,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1013110416, now seen corresponding path program 245 times [2021-08-21 11:53:12,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:12,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975758655] [2021-08-21 11:53:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:12,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:12,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:12,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975758655] [2021-08-21 11:53:12,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975758655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:12,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:12,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:12,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936860769] [2021-08-21 11:53:12,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:12,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:12,987 INFO L87 Difference]: Start difference. First operand 5734 states and 15492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:14,439 INFO L93 Difference]: Finished difference Result 14550 states and 38377 transitions. [2021-08-21 11:53:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:14,464 INFO L225 Difference]: With dead ends: 14550 [2021-08-21 11:53:14,464 INFO L226 Difference]: Without dead ends: 14550 [2021-08-21 11:53:14,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1246.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:14,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14550 states. [2021-08-21 11:53:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14550 to 5606. [2021-08-21 11:53:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5604 states have (on average 2.698786581013562) internal successors, (15124), 5605 states have internal predecessors, (15124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 15124 transitions. [2021-08-21 11:53:14,648 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 15124 transitions. Word has length 114 [2021-08-21 11:53:14,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:14,648 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 15124 transitions. [2021-08-21 11:53:14,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:14,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 15124 transitions. [2021-08-21 11:53:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:14,654 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:14,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:14,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-08-21 11:53:14,654 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:14,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:14,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2094464786, now seen corresponding path program 246 times [2021-08-21 11:53:14,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:14,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541400159] [2021-08-21 11:53:14,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:14,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:15,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:15,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541400159] [2021-08-21 11:53:15,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541400159] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:15,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:15,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:15,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532464719] [2021-08-21 11:53:15,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:15,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:15,040 INFO L87 Difference]: Start difference. First operand 5606 states and 15124 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:16,460 INFO L93 Difference]: Finished difference Result 12604 states and 33368 transitions. [2021-08-21 11:53:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:16,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:16,482 INFO L225 Difference]: With dead ends: 12604 [2021-08-21 11:53:16,483 INFO L226 Difference]: Without dead ends: 12604 [2021-08-21 11:53:16,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1228.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12604 states. [2021-08-21 11:53:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12604 to 5686. [2021-08-21 11:53:16,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:53:16,608 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:53:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:53:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:53:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:16,615 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:16,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:16,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-08-21 11:53:16,616 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:16,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash 855344688, now seen corresponding path program 247 times [2021-08-21 11:53:16,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:16,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793761411] [2021-08-21 11:53:16,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:16,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:17,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:17,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793761411] [2021-08-21 11:53:17,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793761411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:17,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:17,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:17,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594276405] [2021-08-21 11:53:17,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:17,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:17,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:17,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:17,032 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:18,448 INFO L93 Difference]: Finished difference Result 13377 states and 35100 transitions. [2021-08-21 11:53:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:18,448 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:18,470 INFO L225 Difference]: With dead ends: 13377 [2021-08-21 11:53:18,470 INFO L226 Difference]: Without dead ends: 13377 [2021-08-21 11:53:18,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1233.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13377 states. [2021-08-21 11:53:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13377 to 5670. [2021-08-21 11:53:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:18,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:53:18,596 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:53:18,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:18,596 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:53:18,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:18,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:53:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:18,603 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:18,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-08-21 11:53:18,603 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash -354996908, now seen corresponding path program 248 times [2021-08-21 11:53:18,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:18,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088114635] [2021-08-21 11:53:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:18,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:18,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:18,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088114635] [2021-08-21 11:53:18,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088114635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:18,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:18,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:18,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293586135] [2021-08-21 11:53:18,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:18,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:18,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:18,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:18,993 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:20,470 INFO L93 Difference]: Finished difference Result 16320 states and 42718 transitions. [2021-08-21 11:53:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:20,495 INFO L225 Difference]: With dead ends: 16320 [2021-08-21 11:53:20,495 INFO L226 Difference]: Without dead ends: 16320 [2021-08-21 11:53:20,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1273.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:20,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16320 states. [2021-08-21 11:53:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16320 to 5686. [2021-08-21 11:53:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:53:20,636 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:53:20,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:20,636 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:53:20,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:20,636 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:53:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:20,642 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:20,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:20,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-08-21 11:53:20,642 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:20,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1287015536, now seen corresponding path program 249 times [2021-08-21 11:53:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:20,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321104337] [2021-08-21 11:53:20,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:20,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:21,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:21,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321104337] [2021-08-21 11:53:21,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321104337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:21,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:21,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:21,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078747274] [2021-08-21 11:53:21,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:21,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:21,039 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:22,552 INFO L93 Difference]: Finished difference Result 13545 states and 35556 transitions. [2021-08-21 11:53:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:22,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:22,574 INFO L225 Difference]: With dead ends: 13545 [2021-08-21 11:53:22,574 INFO L226 Difference]: Without dead ends: 13545 [2021-08-21 11:53:22,575 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1300.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13545 states. [2021-08-21 11:53:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13545 to 5654. [2021-08-21 11:53:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 5652 states have (on average 2.700283085633404) internal successors, (15262), 5653 states have internal predecessors, (15262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:22,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 15262 transitions. [2021-08-21 11:53:22,702 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 15262 transitions. Word has length 114 [2021-08-21 11:53:22,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:22,702 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 15262 transitions. [2021-08-21 11:53:22,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:22,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 15262 transitions. [2021-08-21 11:53:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:22,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:22,709 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:22,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-08-21 11:53:22,709 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash -222239154, now seen corresponding path program 250 times [2021-08-21 11:53:22,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:22,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896637844] [2021-08-21 11:53:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:22,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:23,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:23,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896637844] [2021-08-21 11:53:23,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896637844] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:23,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:23,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:23,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200240483] [2021-08-21 11:53:23,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:23,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:23,110 INFO L87 Difference]: Start difference. First operand 5654 states and 15262 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:24,652 INFO L93 Difference]: Finished difference Result 16800 states and 44050 transitions. [2021-08-21 11:53:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:24,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:24,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:24,680 INFO L225 Difference]: With dead ends: 16800 [2021-08-21 11:53:24,680 INFO L226 Difference]: Without dead ends: 16800 [2021-08-21 11:53:24,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1272.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:24,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16800 states. [2021-08-21 11:53:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16800 to 5702. [2021-08-21 11:53:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5700 states have (on average 2.7017543859649122) internal successors, (15400), 5701 states have internal predecessors, (15400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 15400 transitions. [2021-08-21 11:53:24,830 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 15400 transitions. Word has length 114 [2021-08-21 11:53:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:24,830 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 15400 transitions. [2021-08-21 11:53:24,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 15400 transitions. [2021-08-21 11:53:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:24,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:24,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:24,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-08-21 11:53:24,839 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1154257782, now seen corresponding path program 251 times [2021-08-21 11:53:24,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:24,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011065599] [2021-08-21 11:53:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:24,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:25,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:25,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011065599] [2021-08-21 11:53:25,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011065599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:25,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:25,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:25,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057246705] [2021-08-21 11:53:25,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:25,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:25,255 INFO L87 Difference]: Start difference. First operand 5702 states and 15400 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:26,708 INFO L93 Difference]: Finished difference Result 16700 states and 43768 transitions. [2021-08-21 11:53:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:26,710 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:26,782 INFO L225 Difference]: With dead ends: 16700 [2021-08-21 11:53:26,782 INFO L226 Difference]: Without dead ends: 16700 [2021-08-21 11:53:26,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1252.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2021-08-21 11:53:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 5686. [2021-08-21 11:53:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:53:26,908 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:53:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:26,909 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:53:26,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:53:26,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:26,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:26,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:26,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-08-21 11:53:26,916 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -350993166, now seen corresponding path program 252 times [2021-08-21 11:53:26,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:26,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364699475] [2021-08-21 11:53:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:26,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:26,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:27,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:27,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:27,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364699475] [2021-08-21 11:53:27,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364699475] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:27,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:27,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:27,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86650931] [2021-08-21 11:53:27,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:27,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:27,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:27,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:27,324 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:28,784 INFO L93 Difference]: Finished difference Result 13961 states and 36720 transitions. [2021-08-21 11:53:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:28,804 INFO L225 Difference]: With dead ends: 13961 [2021-08-21 11:53:28,804 INFO L226 Difference]: Without dead ends: 13961 [2021-08-21 11:53:28,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1241.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:28,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13961 states. [2021-08-21 11:53:28,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13961 to 5622. [2021-08-21 11:53:28,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5622 states, 5620 states have (on average 2.699288256227758) internal successors, (15170), 5621 states have internal predecessors, (15170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5622 states to 5622 states and 15170 transitions. [2021-08-21 11:53:28,911 INFO L78 Accepts]: Start accepts. Automaton has 5622 states and 15170 transitions. Word has length 114 [2021-08-21 11:53:28,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:28,911 INFO L470 AbstractCegarLoop]: Abstraction has 5622 states and 15170 transitions. [2021-08-21 11:53:28,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:28,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5622 states and 15170 transitions. [2021-08-21 11:53:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:28,916 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:28,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:28,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-08-21 11:53:28,917 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:28,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:28,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1181532012, now seen corresponding path program 253 times [2021-08-21 11:53:28,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:28,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358557147] [2021-08-21 11:53:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:28,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:29,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:29,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358557147] [2021-08-21 11:53:29,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358557147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:29,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:29,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:29,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576267197] [2021-08-21 11:53:29,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:29,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:29,327 INFO L87 Difference]: Start difference. First operand 5622 states and 15170 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:30,727 INFO L93 Difference]: Finished difference Result 12695 states and 33447 transitions. [2021-08-21 11:53:30,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:30,727 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:30,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:30,745 INFO L225 Difference]: With dead ends: 12695 [2021-08-21 11:53:30,745 INFO L226 Difference]: Without dead ends: 12695 [2021-08-21 11:53:30,745 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1230.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12695 states. [2021-08-21 11:53:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12695 to 5686. [2021-08-21 11:53:30,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5686 states, 5684 states have (on average 2.7012667135819846) internal successors, (15354), 5685 states have internal predecessors, (15354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 15354 transitions. [2021-08-21 11:53:30,841 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 15354 transitions. Word has length 114 [2021-08-21 11:53:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:30,841 INFO L470 AbstractCegarLoop]: Abstraction has 5686 states and 15354 transitions. [2021-08-21 11:53:30,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 15354 transitions. [2021-08-21 11:53:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:30,846 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:30,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:30,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-08-21 11:53:30,846 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:30,847 INFO L82 PathProgramCache]: Analyzing trace with hash 249513384, now seen corresponding path program 254 times [2021-08-21 11:53:30,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:30,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30982917] [2021-08-21 11:53:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:30,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:31,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:31,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30982917] [2021-08-21 11:53:31,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30982917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:31,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:31,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:31,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814552940] [2021-08-21 11:53:31,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:31,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:31,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:31,267 INFO L87 Difference]: Start difference. First operand 5686 states and 15354 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:32,717 INFO L93 Difference]: Finished difference Result 12595 states and 33165 transitions. [2021-08-21 11:53:32,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:32,718 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:32,735 INFO L225 Difference]: With dead ends: 12595 [2021-08-21 11:53:32,736 INFO L226 Difference]: Without dead ends: 12595 [2021-08-21 11:53:32,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1229.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12595 states. [2021-08-21 11:53:32,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12595 to 5670. [2021-08-21 11:53:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5668 states have (on average 2.700776287932251) internal successors, (15308), 5669 states have internal predecessors, (15308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 15308 transitions. [2021-08-21 11:53:32,831 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 15308 transitions. Word has length 114 [2021-08-21 11:53:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:32,831 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 15308 transitions. [2021-08-21 11:53:32,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 15308 transitions. [2021-08-21 11:53:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:32,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:32,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:32,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-08-21 11:53:32,837 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:32,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:32,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1052778000, now seen corresponding path program 255 times [2021-08-21 11:53:32,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:32,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344788009] [2021-08-21 11:53:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:32,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:33,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:33,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344788009] [2021-08-21 11:53:33,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344788009] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:33,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962226433] [2021-08-21 11:53:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:33,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:33,239 INFO L87 Difference]: Start difference. First operand 5670 states and 15308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:34,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:34,733 INFO L93 Difference]: Finished difference Result 12883 states and 33993 transitions. [2021-08-21 11:53:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:34,753 INFO L225 Difference]: With dead ends: 12883 [2021-08-21 11:53:34,753 INFO L226 Difference]: Without dead ends: 12883 [2021-08-21 11:53:34,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1266.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12883 states. [2021-08-21 11:53:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12883 to 5638. [2021-08-21 11:53:34,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5638 states, 5636 states have (on average 2.699787083037615) internal successors, (15216), 5637 states have internal predecessors, (15216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:34,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5638 states to 5638 states and 15216 transitions. [2021-08-21 11:53:34,873 INFO L78 Accepts]: Start accepts. Automaton has 5638 states and 15216 transitions. Word has length 114 [2021-08-21 11:53:34,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:34,873 INFO L470 AbstractCegarLoop]: Abstraction has 5638 states and 15216 transitions. [2021-08-21 11:53:34,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:34,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5638 states and 15216 transitions. [2021-08-21 11:53:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:34,879 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:34,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:34,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-08-21 11:53:34,880 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:34,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:34,880 INFO L82 PathProgramCache]: Analyzing trace with hash 366288114, now seen corresponding path program 256 times [2021-08-21 11:53:34,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:34,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954321435] [2021-08-21 11:53:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:34,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:35,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:35,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954321435] [2021-08-21 11:53:35,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954321435] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:35,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:35,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:35,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631757163] [2021-08-21 11:53:35,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:35,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:35,298 INFO L87 Difference]: Start difference. First operand 5638 states and 15216 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:36,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:36,729 INFO L93 Difference]: Finished difference Result 9728 states and 25781 transitions. [2021-08-21 11:53:36,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:36,729 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:36,743 INFO L225 Difference]: With dead ends: 9728 [2021-08-21 11:53:36,743 INFO L226 Difference]: Without dead ends: 9728 [2021-08-21 11:53:36,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1260.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:36,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9728 states. [2021-08-21 11:53:36,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9728 to 5566. [2021-08-21 11:53:36,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5564 states have (on average 2.695902228612509) internal successors, (15000), 5565 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15000 transitions. [2021-08-21 11:53:36,843 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15000 transitions. Word has length 114 [2021-08-21 11:53:36,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:36,844 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15000 transitions. [2021-08-21 11:53:36,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15000 transitions. [2021-08-21 11:53:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:36,850 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:36,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:36,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-08-21 11:53:36,850 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:36,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1602489748, now seen corresponding path program 257 times [2021-08-21 11:53:36,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:36,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960480428] [2021-08-21 11:53:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:36,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:37,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:37,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960480428] [2021-08-21 11:53:37,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960480428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:37,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:37,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:37,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131282663] [2021-08-21 11:53:37,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:37,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:37,244 INFO L87 Difference]: Start difference. First operand 5566 states and 15000 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:38,670 INFO L93 Difference]: Finished difference Result 13427 states and 35668 transitions. [2021-08-21 11:53:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:38,736 INFO L225 Difference]: With dead ends: 13427 [2021-08-21 11:53:38,736 INFO L226 Difference]: Without dead ends: 13427 [2021-08-21 11:53:38,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1222.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:38,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2021-08-21 11:53:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 5694. [2021-08-21 11:53:38,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:53:38,842 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:53:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:38,843 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:53:38,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:53:38,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:38,849 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:38,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:38,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-08-21 11:53:38,849 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:38,850 INFO L82 PathProgramCache]: Analyzing trace with hash -531470260, now seen corresponding path program 258 times [2021-08-21 11:53:38,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:38,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128958221] [2021-08-21 11:53:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:38,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:39,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:39,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128958221] [2021-08-21 11:53:39,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128958221] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:39,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:39,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:39,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700752701] [2021-08-21 11:53:39,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:39,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:39,298 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:40,757 INFO L93 Difference]: Finished difference Result 15855 states and 42025 transitions. [2021-08-21 11:53:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:40,783 INFO L225 Difference]: With dead ends: 15855 [2021-08-21 11:53:40,783 INFO L226 Difference]: Without dead ends: 15855 [2021-08-21 11:53:40,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1247.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15855 states. [2021-08-21 11:53:40,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15855 to 5710. [2021-08-21 11:53:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5708 states have (on average 2.7004204625087596) internal successors, (15414), 5709 states have internal predecessors, (15414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 15414 transitions. [2021-08-21 11:53:40,930 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 15414 transitions. Word has length 114 [2021-08-21 11:53:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:40,930 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 15414 transitions. [2021-08-21 11:53:40,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 15414 transitions. [2021-08-21 11:53:40,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:40,937 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:40,937 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:40,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-08-21 11:53:40,937 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1770590358, now seen corresponding path program 259 times [2021-08-21 11:53:40,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:40,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481991042] [2021-08-21 11:53:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:40,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:41,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:41,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481991042] [2021-08-21 11:53:41,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481991042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:41,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:41,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:41,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406982970] [2021-08-21 11:53:41,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:41,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:41,346 INFO L87 Difference]: Start difference. First operand 5710 states and 15414 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:42,764 INFO L93 Difference]: Finished difference Result 14255 states and 37545 transitions. [2021-08-21 11:53:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:42,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:42,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:42,789 INFO L225 Difference]: With dead ends: 14255 [2021-08-21 11:53:42,789 INFO L226 Difference]: Without dead ends: 14255 [2021-08-21 11:53:42,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1227.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14255 states. [2021-08-21 11:53:42,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14255 to 5662. [2021-08-21 11:53:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.698939929328622) internal successors, (15276), 5661 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15276 transitions. [2021-08-21 11:53:42,919 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15276 transitions. Word has length 114 [2021-08-21 11:53:42,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:42,919 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15276 transitions. [2021-08-21 11:53:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15276 transitions. [2021-08-21 11:53:42,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:42,925 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:42,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:42,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-08-21 11:53:42,926 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:42,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1604004362, now seen corresponding path program 260 times [2021-08-21 11:53:42,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:42,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631118510] [2021-08-21 11:53:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:42,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:43,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:43,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631118510] [2021-08-21 11:53:43,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631118510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:43,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:43,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:43,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220434993] [2021-08-21 11:53:43,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:43,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:43,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:43,334 INFO L87 Difference]: Start difference. First operand 5662 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:44,756 INFO L93 Difference]: Finished difference Result 17075 states and 44992 transitions. [2021-08-21 11:53:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:44,756 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:44,783 INFO L225 Difference]: With dead ends: 17075 [2021-08-21 11:53:44,783 INFO L226 Difference]: Without dead ends: 17075 [2021-08-21 11:53:44,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1225.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2021-08-21 11:53:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 5694. [2021-08-21 11:53:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:53:44,933 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:53:44,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:44,933 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:53:44,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:44,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:53:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:44,940 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:44,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:44,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-08-21 11:53:44,940 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 364884264, now seen corresponding path program 261 times [2021-08-21 11:53:44,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:44,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630070870] [2021-08-21 11:53:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:44,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:45,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:45,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630070870] [2021-08-21 11:53:45,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630070870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:45,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:45,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:45,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519682627] [2021-08-21 11:53:45,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:45,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:45,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:45,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:45,397 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:46,857 INFO L93 Difference]: Finished difference Result 17848 states and 46724 transitions. [2021-08-21 11:53:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:46,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:46,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:46,886 INFO L225 Difference]: With dead ends: 17848 [2021-08-21 11:53:46,887 INFO L226 Difference]: Without dead ends: 17848 [2021-08-21 11:53:46,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1296.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:46,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17848 states. [2021-08-21 11:53:47,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17848 to 5678. [2021-08-21 11:53:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5676 states have (on average 2.6994362226920368) internal successors, (15322), 5677 states have internal predecessors, (15322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:47,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 15322 transitions. [2021-08-21 11:53:47,050 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 15322 transitions. Word has length 114 [2021-08-21 11:53:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:47,050 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 15322 transitions. [2021-08-21 11:53:47,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 15322 transitions. [2021-08-21 11:53:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:47,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:47,056 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:47,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-08-21 11:53:47,057 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:47,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:47,057 INFO L82 PathProgramCache]: Analyzing trace with hash -845457332, now seen corresponding path program 262 times [2021-08-21 11:53:47,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:47,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253786745] [2021-08-21 11:53:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:47,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:47,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:47,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253786745] [2021-08-21 11:53:47,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253786745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:47,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:47,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:47,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080431189] [2021-08-21 11:53:47,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:47,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:47,447 INFO L87 Difference]: Start difference. First operand 5678 states and 15322 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:48,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:48,906 INFO L93 Difference]: Finished difference Result 17214 states and 45209 transitions. [2021-08-21 11:53:48,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:48,906 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:48,932 INFO L225 Difference]: With dead ends: 17214 [2021-08-21 11:53:48,932 INFO L226 Difference]: Without dead ends: 17214 [2021-08-21 11:53:48,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1275.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17214 states. [2021-08-21 11:53:49,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17214 to 5694. [2021-08-21 11:53:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:49,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:53:49,080 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:53:49,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:49,080 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:53:49,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:49,080 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:53:49,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:49,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:49,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:49,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-08-21 11:53:49,087 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1777475960, now seen corresponding path program 263 times [2021-08-21 11:53:49,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:49,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927923068] [2021-08-21 11:53:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:49,088 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:49,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:49,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927923068] [2021-08-21 11:53:49,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927923068] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:49,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:49,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:49,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62679712] [2021-08-21 11:53:49,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:49,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:49,520 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:50,964 INFO L93 Difference]: Finished difference Result 14439 states and 38047 transitions. [2021-08-21 11:53:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:50,964 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:50,987 INFO L225 Difference]: With dead ends: 14439 [2021-08-21 11:53:50,987 INFO L226 Difference]: Without dead ends: 14439 [2021-08-21 11:53:50,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1295.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14439 states. [2021-08-21 11:53:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14439 to 5630. [2021-08-21 11:53:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.6979388770433546) internal successors, (15184), 5629 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15184 transitions. [2021-08-21 11:53:51,129 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15184 transitions. Word has length 114 [2021-08-21 11:53:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:51,129 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15184 transitions. [2021-08-21 11:53:51,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15184 transitions. [2021-08-21 11:53:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:51,135 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:51,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:51,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-08-21 11:53:51,135 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash -638108370, now seen corresponding path program 264 times [2021-08-21 11:53:51,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:51,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369942155] [2021-08-21 11:53:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:51,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:51,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:51,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369942155] [2021-08-21 11:53:51,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369942155] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:51,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:51,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:51,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465817325] [2021-08-21 11:53:51,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:51,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:51,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:51,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:51,522 INFO L87 Difference]: Start difference. First operand 5630 states and 15184 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:52,999 INFO L93 Difference]: Finished difference Result 13661 states and 36202 transitions. [2021-08-21 11:53:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:52,999 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:53,020 INFO L225 Difference]: With dead ends: 13661 [2021-08-21 11:53:53,020 INFO L226 Difference]: Without dead ends: 13661 [2021-08-21 11:53:53,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1241.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13661 states. [2021-08-21 11:53:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13661 to 5694. [2021-08-21 11:53:53,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:53,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:53:53,163 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:53:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:53,163 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:53:53,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:53:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:53,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:53,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:53,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-08-21 11:53:53,170 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1877228468, now seen corresponding path program 265 times [2021-08-21 11:53:53,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:53,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623829646] [2021-08-21 11:53:53,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:53,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:53,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:53,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:53,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623829646] [2021-08-21 11:53:53,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623829646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:53,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:53,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:53,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189814304] [2021-08-21 11:53:53,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:53,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:53,556 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:54,982 INFO L93 Difference]: Finished difference Result 14434 states and 37934 transitions. [2021-08-21 11:53:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:55,006 INFO L225 Difference]: With dead ends: 14434 [2021-08-21 11:53:55,006 INFO L226 Difference]: Without dead ends: 14434 [2021-08-21 11:53:55,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1239.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14434 states. [2021-08-21 11:53:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14434 to 5678. [2021-08-21 11:53:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5676 states have (on average 2.6994362226920368) internal successors, (15322), 5677 states have internal predecessors, (15322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:55,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 15322 transitions. [2021-08-21 11:53:55,137 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 15322 transitions. Word has length 114 [2021-08-21 11:53:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:55,137 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 15322 transitions. [2021-08-21 11:53:55,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 15322 transitions. [2021-08-21 11:53:55,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:55,143 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:55,143 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:55,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-08-21 11:53:55,143 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:55,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1207397232, now seen corresponding path program 266 times [2021-08-21 11:53:55,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:55,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816156215] [2021-08-21 11:53:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:55,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:55,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:55,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816156215] [2021-08-21 11:53:55,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816156215] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:55,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:55,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:55,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635887649] [2021-08-21 11:53:55,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:55,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:55,566 INFO L87 Difference]: Start difference. First operand 5678 states and 15322 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:57,008 INFO L93 Difference]: Finished difference Result 17377 states and 45552 transitions. [2021-08-21 11:53:57,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:57,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:57,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:57,038 INFO L225 Difference]: With dead ends: 17377 [2021-08-21 11:53:57,038 INFO L226 Difference]: Without dead ends: 17377 [2021-08-21 11:53:57,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1245.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17377 states. [2021-08-21 11:53:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17377 to 5694. [2021-08-21 11:53:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:53:57,194 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:53:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:57,195 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:53:57,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:53:57,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:57,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:57,201 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:57,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-08-21 11:53:57,201 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash 275378604, now seen corresponding path program 267 times [2021-08-21 11:53:57,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:57,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654511987] [2021-08-21 11:53:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:57,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:57,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:57,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654511987] [2021-08-21 11:53:57,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654511987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:57,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:57,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:57,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138863880] [2021-08-21 11:53:57,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:57,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:57,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:57,624 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:59,084 INFO L93 Difference]: Finished difference Result 14602 states and 38390 transitions. [2021-08-21 11:53:59,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:53:59,085 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:53:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:59,108 INFO L225 Difference]: With dead ends: 14602 [2021-08-21 11:53:59,108 INFO L226 Difference]: Without dead ends: 14602 [2021-08-21 11:53:59,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1245.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:53:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14602 states. [2021-08-21 11:53:59,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14602 to 5662. [2021-08-21 11:53:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5662 states, 5660 states have (on average 2.698939929328622) internal successors, (15276), 5661 states have internal predecessors, (15276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5662 states to 5662 states and 15276 transitions. [2021-08-21 11:53:59,236 INFO L78 Accepts]: Start accepts. Automaton has 5662 states and 15276 transitions. Word has length 114 [2021-08-21 11:53:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:59,236 INFO L470 AbstractCegarLoop]: Abstraction has 5662 states and 15276 transitions. [2021-08-21 11:53:59,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5662 states and 15276 transitions. [2021-08-21 11:53:59,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:53:59,242 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:59,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:59,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-08-21 11:53:59,243 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:53:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:59,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1340154986, now seen corresponding path program 268 times [2021-08-21 11:53:59,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:59,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435519621] [2021-08-21 11:53:59,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:59,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:59,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:59,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435519621] [2021-08-21 11:53:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435519621] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:59,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:59,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:53:59,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146073319] [2021-08-21 11:53:59,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:53:59,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:53:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:53:59,636 INFO L87 Difference]: Start difference. First operand 5662 states and 15276 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:01,082 INFO L93 Difference]: Finished difference Result 13784 states and 36373 transitions. [2021-08-21 11:54:01,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:01,083 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:01,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:01,103 INFO L225 Difference]: With dead ends: 13784 [2021-08-21 11:54:01,103 INFO L226 Difference]: Without dead ends: 13784 [2021-08-21 11:54:01,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1270.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13784 states. [2021-08-21 11:54:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13784 to 5710. [2021-08-21 11:54:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5708 states have (on average 2.7004204625087596) internal successors, (15414), 5709 states have internal predecessors, (15414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 15414 transitions. [2021-08-21 11:54:01,224 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 15414 transitions. Word has length 114 [2021-08-21 11:54:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:01,224 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 15414 transitions. [2021-08-21 11:54:01,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 15414 transitions. [2021-08-21 11:54:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:01,230 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:01,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:01,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-08-21 11:54:01,231 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:01,231 INFO L82 PathProgramCache]: Analyzing trace with hash 408136358, now seen corresponding path program 269 times [2021-08-21 11:54:01,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:01,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798834694] [2021-08-21 11:54:01,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:01,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:01,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:01,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798834694] [2021-08-21 11:54:01,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798834694] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:01,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:01,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:01,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673090217] [2021-08-21 11:54:01,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:01,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:01,628 INFO L87 Difference]: Start difference. First operand 5710 states and 15414 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:03,112 INFO L93 Difference]: Finished difference Result 13684 states and 36091 transitions. [2021-08-21 11:54:03,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:03,137 INFO L225 Difference]: With dead ends: 13684 [2021-08-21 11:54:03,137 INFO L226 Difference]: Without dead ends: 13684 [2021-08-21 11:54:03,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1270.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:03,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13684 states. [2021-08-21 11:54:03,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13684 to 5694. [2021-08-21 11:54:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5694 states, 5692 states have (on average 2.6999297259311312) internal successors, (15368), 5693 states have internal predecessors, (15368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5694 states to 5694 states and 15368 transitions. [2021-08-21 11:54:03,274 INFO L78 Accepts]: Start accepts. Automaton has 5694 states and 15368 transitions. Word has length 114 [2021-08-21 11:54:03,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:03,274 INFO L470 AbstractCegarLoop]: Abstraction has 5694 states and 15368 transitions. [2021-08-21 11:54:03,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:03,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5694 states and 15368 transitions. [2021-08-21 11:54:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:03,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:03,280 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:03,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-08-21 11:54:03,281 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:03,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1211400974, now seen corresponding path program 270 times [2021-08-21 11:54:03,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:03,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781013287] [2021-08-21 11:54:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:03,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:03,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:03,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781013287] [2021-08-21 11:54:03,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781013287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:03,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:03,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:03,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288926949] [2021-08-21 11:54:03,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:03,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:03,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:03,689 INFO L87 Difference]: Start difference. First operand 5694 states and 15368 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:05,181 INFO L93 Difference]: Finished difference Result 11227 states and 29757 transitions. [2021-08-21 11:54:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:05,181 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:05,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:05,198 INFO L225 Difference]: With dead ends: 11227 [2021-08-21 11:54:05,198 INFO L226 Difference]: Without dead ends: 11227 [2021-08-21 11:54:05,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1238.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:05,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11227 states. [2021-08-21 11:54:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11227 to 5566. [2021-08-21 11:54:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5564 states have (on average 2.695902228612509) internal successors, (15000), 5565 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15000 transitions. [2021-08-21 11:54:05,310 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15000 transitions. Word has length 114 [2021-08-21 11:54:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:05,310 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15000 transitions. [2021-08-21 11:54:05,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15000 transitions. [2021-08-21 11:54:05,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:05,316 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:05,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:05,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-08-21 11:54:05,317 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1854456908, now seen corresponding path program 271 times [2021-08-21 11:54:05,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:05,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20240065] [2021-08-21 11:54:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:05,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:05,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:05,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20240065] [2021-08-21 11:54:05,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20240065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:05,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:05,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:05,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718451555] [2021-08-21 11:54:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:05,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:05,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:05,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:05,729 INFO L87 Difference]: Start difference. First operand 5566 states and 15000 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:07,201 INFO L93 Difference]: Finished difference Result 13779 states and 36566 transitions. [2021-08-21 11:54:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:07,201 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:07,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:07,222 INFO L225 Difference]: With dead ends: 13779 [2021-08-21 11:54:07,222 INFO L226 Difference]: Without dead ends: 13779 [2021-08-21 11:54:07,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1219.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13779 states. [2021-08-21 11:54:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13779 to 5630. [2021-08-21 11:54:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.6979388770433546) internal successors, (15184), 5629 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15184 transitions. [2021-08-21 11:54:07,353 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15184 transitions. Word has length 114 [2021-08-21 11:54:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:07,353 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15184 transitions. [2021-08-21 11:54:07,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15184 transitions. [2021-08-21 11:54:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:07,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:07,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:07,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-08-21 11:54:07,360 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:07,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1369490900, now seen corresponding path program 272 times [2021-08-21 11:54:07,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:07,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597651772] [2021-08-21 11:54:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:07,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:07,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:07,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597651772] [2021-08-21 11:54:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597651772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:07,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:07,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032186893] [2021-08-21 11:54:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:07,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:07,766 INFO L87 Difference]: Start difference. First operand 5630 states and 15184 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:09,195 INFO L93 Difference]: Finished difference Result 16207 states and 42923 transitions. [2021-08-21 11:54:09,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:09,222 INFO L225 Difference]: With dead ends: 16207 [2021-08-21 11:54:09,222 INFO L226 Difference]: Without dead ends: 16207 [2021-08-21 11:54:09,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1222.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2021-08-21 11:54:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 5646. [2021-08-21 11:54:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5646 states, 5644 states have (on average 2.6984408221119773) internal successors, (15230), 5645 states have internal predecessors, (15230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5646 states to 5646 states and 15230 transitions. [2021-08-21 11:54:09,374 INFO L78 Accepts]: Start accepts. Automaton has 5646 states and 15230 transitions. Word has length 114 [2021-08-21 11:54:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:09,374 INFO L470 AbstractCegarLoop]: Abstraction has 5646 states and 15230 transitions. [2021-08-21 11:54:09,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 5646 states and 15230 transitions. [2021-08-21 11:54:09,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:09,380 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:09,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:09,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-08-21 11:54:09,381 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1686356298, now seen corresponding path program 273 times [2021-08-21 11:54:09,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:09,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407283491] [2021-08-21 11:54:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:09,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:09,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:09,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407283491] [2021-08-21 11:54:09,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407283491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:09,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:09,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:09,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023483712] [2021-08-21 11:54:09,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:09,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:09,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:09,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:09,834 INFO L87 Difference]: Start difference. First operand 5646 states and 15230 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:11,310 INFO L93 Difference]: Finished difference Result 14607 states and 38443 transitions. [2021-08-21 11:54:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:11,332 INFO L225 Difference]: With dead ends: 14607 [2021-08-21 11:54:11,332 INFO L226 Difference]: Without dead ends: 14607 [2021-08-21 11:54:11,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1268.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14607 states. [2021-08-21 11:54:11,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14607 to 5598. [2021-08-21 11:54:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5596 states have (on average 2.696926375982845) internal successors, (15092), 5597 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15092 transitions. [2021-08-21 11:54:11,474 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15092 transitions. Word has length 114 [2021-08-21 11:54:11,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:11,474 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 15092 transitions. [2021-08-21 11:54:11,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15092 transitions. [2021-08-21 11:54:11,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:11,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:11,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:11,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-08-21 11:54:11,480 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:11,480 INFO L82 PathProgramCache]: Analyzing trace with hash 765983722, now seen corresponding path program 274 times [2021-08-21 11:54:11,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:11,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357121284] [2021-08-21 11:54:11,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:11,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:11,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:11,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357121284] [2021-08-21 11:54:11,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357121284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:11,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:11,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:11,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967983387] [2021-08-21 11:54:11,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:11,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:11,868 INFO L87 Difference]: Start difference. First operand 5598 states and 15092 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:13,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:13,335 INFO L93 Difference]: Finished difference Result 13885 states and 36732 transitions. [2021-08-21 11:54:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:13,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:13,360 INFO L225 Difference]: With dead ends: 13885 [2021-08-21 11:54:13,360 INFO L226 Difference]: Without dead ends: 13885 [2021-08-21 11:54:13,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1278.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:13,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13885 states. [2021-08-21 11:54:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13885 to 5630. [2021-08-21 11:54:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.6979388770433546) internal successors, (15184), 5629 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15184 transitions. [2021-08-21 11:54:13,510 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15184 transitions. Word has length 114 [2021-08-21 11:54:13,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:13,510 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15184 transitions. [2021-08-21 11:54:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15184 transitions. [2021-08-21 11:54:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:13,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:13,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:13,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-08-21 11:54:13,517 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:13,518 INFO L82 PathProgramCache]: Analyzing trace with hash -473136376, now seen corresponding path program 275 times [2021-08-21 11:54:13,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:13,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500774130] [2021-08-21 11:54:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:13,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:13,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:13,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500774130] [2021-08-21 11:54:13,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500774130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:13,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:13,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:13,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763555540] [2021-08-21 11:54:13,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:13,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:13,967 INFO L87 Difference]: Start difference. First operand 5630 states and 15184 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:15,483 INFO L93 Difference]: Finished difference Result 14658 states and 38464 transitions. [2021-08-21 11:54:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:15,506 INFO L225 Difference]: With dead ends: 14658 [2021-08-21 11:54:15,507 INFO L226 Difference]: Without dead ends: 14658 [2021-08-21 11:54:15,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1292.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14658 states. [2021-08-21 11:54:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14658 to 5614. [2021-08-21 11:54:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5612 states have (on average 2.6974340698503205) internal successors, (15138), 5613 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 15138 transitions. [2021-08-21 11:54:15,642 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 15138 transitions. Word has length 114 [2021-08-21 11:54:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:15,642 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 15138 transitions. [2021-08-21 11:54:15,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:15,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 15138 transitions. [2021-08-21 11:54:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:15,649 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:15,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:15,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-08-21 11:54:15,649 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1683477972, now seen corresponding path program 276 times [2021-08-21 11:54:15,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:15,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036508777] [2021-08-21 11:54:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:15,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:16,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:16,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036508777] [2021-08-21 11:54:16,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036508777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:16,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:16,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:16,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790756907] [2021-08-21 11:54:16,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:16,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:16,043 INFO L87 Difference]: Start difference. First operand 5614 states and 15138 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:17,547 INFO L93 Difference]: Finished difference Result 14024 states and 36949 transitions. [2021-08-21 11:54:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:17,548 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:17,570 INFO L225 Difference]: With dead ends: 14024 [2021-08-21 11:54:17,571 INFO L226 Difference]: Without dead ends: 14024 [2021-08-21 11:54:17,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1277.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:17,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14024 states. [2021-08-21 11:54:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14024 to 5630. [2021-08-21 11:54:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 2.6979388770433546) internal successors, (15184), 5629 states have internal predecessors, (15184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 15184 transitions. [2021-08-21 11:54:17,704 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 15184 transitions. Word has length 114 [2021-08-21 11:54:17,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:17,704 INFO L470 AbstractCegarLoop]: Abstraction has 5630 states and 15184 transitions. [2021-08-21 11:54:17,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 15184 transitions. [2021-08-21 11:54:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:17,711 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:17,711 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:17,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-08-21 11:54:17,711 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:17,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:17,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1679470696, now seen corresponding path program 277 times [2021-08-21 11:54:17,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:17,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108642369] [2021-08-21 11:54:17,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:17,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:18,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:18,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108642369] [2021-08-21 11:54:18,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108642369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:18,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:18,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:18,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206905473] [2021-08-21 11:54:18,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:18,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:18,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:18,105 INFO L87 Difference]: Start difference. First operand 5630 states and 15184 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:19,563 INFO L93 Difference]: Finished difference Result 11531 states and 30501 transitions. [2021-08-21 11:54:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:19,580 INFO L225 Difference]: With dead ends: 11531 [2021-08-21 11:54:19,581 INFO L226 Difference]: Without dead ends: 11531 [2021-08-21 11:54:19,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1247.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:19,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11531 states. [2021-08-21 11:54:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11531 to 5566. [2021-08-21 11:54:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5564 states have (on average 2.695902228612509) internal successors, (15000), 5565 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:19,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15000 transitions. [2021-08-21 11:54:19,723 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15000 transitions. Word has length 114 [2021-08-21 11:54:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:19,723 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15000 transitions. [2021-08-21 11:54:19,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15000 transitions. [2021-08-21 11:54:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:19,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:19,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:19,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-08-21 11:54:19,730 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:19,730 INFO L82 PathProgramCache]: Analyzing trace with hash 307766604, now seen corresponding path program 278 times [2021-08-21 11:54:19,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:19,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913172333] [2021-08-21 11:54:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:19,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:20,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:20,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913172333] [2021-08-21 11:54:20,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913172333] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:20,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:20,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:20,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740742148] [2021-08-21 11:54:20,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:20,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:20,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:20,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:20,121 INFO L87 Difference]: Start difference. First operand 5566 states and 15000 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:21,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:21,531 INFO L93 Difference]: Finished difference Result 11961 states and 31969 transitions. [2021-08-21 11:54:21,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:21,531 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:21,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:21,549 INFO L225 Difference]: With dead ends: 11961 [2021-08-21 11:54:21,549 INFO L226 Difference]: Without dead ends: 11961 [2021-08-21 11:54:21,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1210.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11961 states. [2021-08-21 11:54:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11961 to 5598. [2021-08-21 11:54:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5598 states, 5596 states have (on average 2.696926375982845) internal successors, (15092), 5597 states have internal predecessors, (15092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5598 states to 5598 states and 15092 transitions. [2021-08-21 11:54:21,673 INFO L78 Accepts]: Start accepts. Automaton has 5598 states and 15092 transitions. Word has length 114 [2021-08-21 11:54:21,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:21,673 INFO L470 AbstractCegarLoop]: Abstraction has 5598 states and 15092 transitions. [2021-08-21 11:54:21,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:21,673 INFO L276 IsEmpty]: Start isEmpty. Operand 5598 states and 15092 transitions. [2021-08-21 11:54:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:21,680 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:21,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:21,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-08-21 11:54:21,680 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:21,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:21,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1378786092, now seen corresponding path program 279 times [2021-08-21 11:54:21,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:21,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515807343] [2021-08-21 11:54:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:21,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:22,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:22,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515807343] [2021-08-21 11:54:22,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515807343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:22,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:22,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:22,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358189348] [2021-08-21 11:54:22,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:22,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:22,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:22,129 INFO L87 Difference]: Start difference. First operand 5598 states and 15092 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:23,565 INFO L93 Difference]: Finished difference Result 12033 states and 32101 transitions. [2021-08-21 11:54:23,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:23,565 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:23,583 INFO L225 Difference]: With dead ends: 12033 [2021-08-21 11:54:23,583 INFO L226 Difference]: Without dead ends: 12033 [2021-08-21 11:54:23,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1241.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12033 states. [2021-08-21 11:54:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12033 to 5614. [2021-08-21 11:54:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5612 states have (on average 2.6974340698503205) internal successors, (15138), 5613 states have internal predecessors, (15138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 15138 transitions. [2021-08-21 11:54:23,694 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 15138 transitions. Word has length 114 [2021-08-21 11:54:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:23,694 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 15138 transitions. [2021-08-21 11:54:23,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 15138 transitions. [2021-08-21 11:54:23,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:23,700 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:23,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:23,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-08-21 11:54:23,701 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash 139665994, now seen corresponding path program 280 times [2021-08-21 11:54:23,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:23,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029222348] [2021-08-21 11:54:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:23,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:24,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:24,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029222348] [2021-08-21 11:54:24,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029222348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:24,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:24,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:24,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203241326] [2021-08-21 11:54:24,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:24,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:24,097 INFO L87 Difference]: Start difference. First operand 5614 states and 15138 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:25,548 INFO L93 Difference]: Finished difference Result 11443 states and 30179 transitions. [2021-08-21 11:54:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:25,549 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:25,566 INFO L225 Difference]: With dead ends: 11443 [2021-08-21 11:54:25,566 INFO L226 Difference]: Without dead ends: 11443 [2021-08-21 11:54:25,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1267.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:25,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2021-08-21 11:54:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 5566. [2021-08-21 11:54:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5564 states have (on average 2.695902228612509) internal successors, (15000), 5565 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 15000 transitions. [2021-08-21 11:54:25,678 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 15000 transitions. Word has length 114 [2021-08-21 11:54:25,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:25,678 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 15000 transitions. [2021-08-21 11:54:25,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 15000 transitions. [2021-08-21 11:54:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:25,684 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:25,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:25,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-08-21 11:54:25,684 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:25,685 INFO L82 PathProgramCache]: Analyzing trace with hash 52284718, now seen corresponding path program 281 times [2021-08-21 11:54:25,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:25,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91027879] [2021-08-21 11:54:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:25,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:26,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:26,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91027879] [2021-08-21 11:54:26,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91027879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:26,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:26,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:26,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061692794] [2021-08-21 11:54:26,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:26,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:26,084 INFO L87 Difference]: Start difference. First operand 5566 states and 15000 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:27,508 INFO L93 Difference]: Finished difference Result 8431 states and 22362 transitions. [2021-08-21 11:54:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:27,509 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:27,522 INFO L225 Difference]: With dead ends: 8431 [2021-08-21 11:54:27,522 INFO L226 Difference]: Without dead ends: 8431 [2021-08-21 11:54:27,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1231.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:27,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2021-08-21 11:54:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 5414. [2021-08-21 11:54:27,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5414 states, 5412 states have (on average 2.690317812269032) internal successors, (14560), 5413 states have internal predecessors, (14560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5414 states to 5414 states and 14560 transitions. [2021-08-21 11:54:27,618 INFO L78 Accepts]: Start accepts. Automaton has 5414 states and 14560 transitions. Word has length 114 [2021-08-21 11:54:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:27,618 INFO L470 AbstractCegarLoop]: Abstraction has 5414 states and 14560 transitions. [2021-08-21 11:54:27,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5414 states and 14560 transitions. [2021-08-21 11:54:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:27,625 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:27,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:27,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-08-21 11:54:27,625 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:27,625 INFO L82 PathProgramCache]: Analyzing trace with hash -305430454, now seen corresponding path program 282 times [2021-08-21 11:54:27,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:27,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452550258] [2021-08-21 11:54:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:27,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:28,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:28,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452550258] [2021-08-21 11:54:28,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452550258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:28,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:28,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:28,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840059256] [2021-08-21 11:54:28,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:28,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:28,057 INFO L87 Difference]: Start difference. First operand 5414 states and 14560 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:29,571 INFO L93 Difference]: Finished difference Result 12895 states and 34044 transitions. [2021-08-21 11:54:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:29,571 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:29,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:29,589 INFO L225 Difference]: With dead ends: 12895 [2021-08-21 11:54:29,590 INFO L226 Difference]: Without dead ends: 12895 [2021-08-21 11:54:29,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1257.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:29,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12895 states. [2021-08-21 11:54:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12895 to 5574. [2021-08-21 11:54:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:29,697 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:29,697 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:29,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:29,704 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:29,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:29,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-08-21 11:54:29,704 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:29,704 INFO L82 PathProgramCache]: Analyzing trace with hash 765589034, now seen corresponding path program 283 times [2021-08-21 11:54:29,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:29,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177715133] [2021-08-21 11:54:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:29,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:30,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:30,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:30,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177715133] [2021-08-21 11:54:30,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177715133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:30,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:30,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:30,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145190191] [2021-08-21 11:54:30,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:30,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:30,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:30,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:30,099 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:31,590 INFO L93 Difference]: Finished difference Result 15323 states and 40401 transitions. [2021-08-21 11:54:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:31,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:31,615 INFO L225 Difference]: With dead ends: 15323 [2021-08-21 11:54:31,615 INFO L226 Difference]: Without dead ends: 15323 [2021-08-21 11:54:31,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1229.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15323 states. [2021-08-21 11:54:31,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15323 to 5590. [2021-08-21 11:54:31,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5588 states have (on average 2.69613457408733) internal successors, (15066), 5589 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 15066 transitions. [2021-08-21 11:54:31,755 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 15066 transitions. Word has length 114 [2021-08-21 11:54:31,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:31,755 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 15066 transitions. [2021-08-21 11:54:31,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 15066 transitions. [2021-08-21 11:54:31,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:31,762 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:31,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:31,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-08-21 11:54:31,762 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash -473531064, now seen corresponding path program 284 times [2021-08-21 11:54:31,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:31,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405957557] [2021-08-21 11:54:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:31,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:32,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:32,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405957557] [2021-08-21 11:54:32,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405957557] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:32,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:32,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:32,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141871384] [2021-08-21 11:54:32,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:32,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:32,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:32,171 INFO L87 Difference]: Start difference. First operand 5590 states and 15066 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:33,626 INFO L93 Difference]: Finished difference Result 13723 states and 35921 transitions. [2021-08-21 11:54:33,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:33,649 INFO L225 Difference]: With dead ends: 13723 [2021-08-21 11:54:33,649 INFO L226 Difference]: Without dead ends: 13723 [2021-08-21 11:54:33,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1249.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13723 states. [2021-08-21 11:54:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13723 to 5542. [2021-08-21 11:54:33,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5540 states have (on average 2.6945848375451265) internal successors, (14928), 5541 states have internal predecessors, (14928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 14928 transitions. [2021-08-21 11:54:33,787 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 14928 transitions. Word has length 114 [2021-08-21 11:54:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:33,787 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 14928 transitions. [2021-08-21 11:54:33,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:33,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 14928 transitions. [2021-08-21 11:54:33,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:33,793 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:33,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:33,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-08-21 11:54:33,794 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:33,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1393903640, now seen corresponding path program 285 times [2021-08-21 11:54:33,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:33,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225752506] [2021-08-21 11:54:33,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:33,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:34,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:34,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:34,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225752506] [2021-08-21 11:54:34,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225752506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:34,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:34,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:34,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927404525] [2021-08-21 11:54:34,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:34,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:34,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:34,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:34,226 INFO L87 Difference]: Start difference. First operand 5542 states and 14928 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:35,676 INFO L93 Difference]: Finished difference Result 16543 states and 43368 transitions. [2021-08-21 11:54:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:35,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:35,704 INFO L225 Difference]: With dead ends: 16543 [2021-08-21 11:54:35,704 INFO L226 Difference]: Without dead ends: 16543 [2021-08-21 11:54:35,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1227.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16543 states. [2021-08-21 11:54:35,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16543 to 5574. [2021-08-21 11:54:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:35,861 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:35,862 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:35,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:35,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:35,868 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:35,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:35,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-08-21 11:54:35,869 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:35,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:35,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1661943558, now seen corresponding path program 286 times [2021-08-21 11:54:35,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:35,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246290687] [2021-08-21 11:54:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:35,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:36,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:36,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246290687] [2021-08-21 11:54:36,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246290687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:36,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:36,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:36,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325527995] [2021-08-21 11:54:36,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:36,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:36,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:36,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:36,288 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:37,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:37,744 INFO L93 Difference]: Finished difference Result 17316 states and 45100 transitions. [2021-08-21 11:54:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:37,744 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:37,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:37,771 INFO L225 Difference]: With dead ends: 17316 [2021-08-21 11:54:37,771 INFO L226 Difference]: Without dead ends: 17316 [2021-08-21 11:54:37,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1259.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17316 states. [2021-08-21 11:54:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17316 to 5558. [2021-08-21 11:54:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5556 states have (on average 2.695104391648668) internal successors, (14974), 5557 states have internal predecessors, (14974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 14974 transitions. [2021-08-21 11:54:37,924 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 14974 transitions. Word has length 114 [2021-08-21 11:54:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:37,924 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 14974 transitions. [2021-08-21 11:54:37,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 14974 transitions. [2021-08-21 11:54:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:37,931 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:37,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:37,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-08-21 11:54:37,931 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash 451601962, now seen corresponding path program 287 times [2021-08-21 11:54:37,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:37,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344119735] [2021-08-21 11:54:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:37,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:38,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:38,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344119735] [2021-08-21 11:54:38,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344119735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:38,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:38,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:38,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912396669] [2021-08-21 11:54:38,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:38,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:38,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:38,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:38,319 INFO L87 Difference]: Start difference. First operand 5558 states and 14974 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:39,777 INFO L93 Difference]: Finished difference Result 16682 states and 43585 transitions. [2021-08-21 11:54:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:39,804 INFO L225 Difference]: With dead ends: 16682 [2021-08-21 11:54:39,804 INFO L226 Difference]: Without dead ends: 16682 [2021-08-21 11:54:39,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1263.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16682 states. [2021-08-21 11:54:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16682 to 5574. [2021-08-21 11:54:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:39,951 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:39,951 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:39,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:39,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:39,957 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:39,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:39,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-08-21 11:54:39,958 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:39,958 INFO L82 PathProgramCache]: Analyzing trace with hash -480416666, now seen corresponding path program 288 times [2021-08-21 11:54:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:39,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668843957] [2021-08-21 11:54:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:39,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:40,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:40,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668843957] [2021-08-21 11:54:40,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668843957] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:40,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:40,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:40,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005717135] [2021-08-21 11:54:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:40,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:40,355 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:41,841 INFO L93 Difference]: Finished difference Result 13907 states and 36423 transitions. [2021-08-21 11:54:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:41,842 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:41,864 INFO L225 Difference]: With dead ends: 13907 [2021-08-21 11:54:41,864 INFO L226 Difference]: Without dead ends: 13907 [2021-08-21 11:54:41,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1273.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:41,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13907 states. [2021-08-21 11:54:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13907 to 5510. [2021-08-21 11:54:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5508 states have (on average 2.693536673928831) internal successors, (14836), 5509 states have internal predecessors, (14836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 14836 transitions. [2021-08-21 11:54:41,994 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 14836 transitions. Word has length 114 [2021-08-21 11:54:41,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:41,994 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 14836 transitions. [2021-08-21 11:54:41,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:41,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 14836 transitions. [2021-08-21 11:54:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:42,000 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:42,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:42,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-08-21 11:54:42,001 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash 658950924, now seen corresponding path program 289 times [2021-08-21 11:54:42,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:42,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881968228] [2021-08-21 11:54:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:42,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:42,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:42,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881968228] [2021-08-21 11:54:42,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881968228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:42,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:42,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:42,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513485765] [2021-08-21 11:54:42,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:42,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:42,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:42,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:42,389 INFO L87 Difference]: Start difference. First operand 5510 states and 14836 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:43,880 INFO L93 Difference]: Finished difference Result 17071 states and 44838 transitions. [2021-08-21 11:54:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:43,880 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:43,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:43,908 INFO L225 Difference]: With dead ends: 17071 [2021-08-21 11:54:43,908 INFO L226 Difference]: Without dead ends: 17071 [2021-08-21 11:54:43,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1231.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17071 states. [2021-08-21 11:54:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17071 to 5574. [2021-08-21 11:54:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:44,082 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:44,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:44,082 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:44,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:44,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:44,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:44,089 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:44,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-08-21 11:54:44,089 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:44,089 INFO L82 PathProgramCache]: Analyzing trace with hash -580169174, now seen corresponding path program 290 times [2021-08-21 11:54:44,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:44,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708803948] [2021-08-21 11:54:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:44,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:44,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:44,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708803948] [2021-08-21 11:54:44,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708803948] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:44,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:44,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719040848] [2021-08-21 11:54:44,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:44,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:44,473 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:45,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:45,917 INFO L93 Difference]: Finished difference Result 17844 states and 46570 transitions. [2021-08-21 11:54:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:45,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:45,946 INFO L225 Difference]: With dead ends: 17844 [2021-08-21 11:54:45,946 INFO L226 Difference]: Without dead ends: 17844 [2021-08-21 11:54:45,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1232.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:45,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17844 states. [2021-08-21 11:54:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17844 to 5558. [2021-08-21 11:54:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5556 states have (on average 2.695104391648668) internal successors, (14974), 5557 states have internal predecessors, (14974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 14974 transitions. [2021-08-21 11:54:46,100 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 14974 transitions. Word has length 114 [2021-08-21 11:54:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:46,100 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 14974 transitions. [2021-08-21 11:54:46,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 14974 transitions. [2021-08-21 11:54:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:46,106 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:46,106 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:46,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-08-21 11:54:46,106 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1790510770, now seen corresponding path program 291 times [2021-08-21 11:54:46,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:46,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867856011] [2021-08-21 11:54:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:46,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:46,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:46,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867856011] [2021-08-21 11:54:46,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867856011] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:46,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:46,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:46,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749051225] [2021-08-21 11:54:46,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:46,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:46,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:46,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:46,514 INFO L87 Difference]: Start difference. First operand 5558 states and 14974 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:47,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:47,980 INFO L93 Difference]: Finished difference Result 20787 states and 54188 transitions. [2021-08-21 11:54:47,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:47,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:47,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:48,013 INFO L225 Difference]: With dead ends: 20787 [2021-08-21 11:54:48,013 INFO L226 Difference]: Without dead ends: 20787 [2021-08-21 11:54:48,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1246.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20787 states. [2021-08-21 11:54:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20787 to 5574. [2021-08-21 11:54:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:48,189 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:48,189 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:48,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:48,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:48,196 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:48,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:48,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-08-21 11:54:48,196 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1572437898, now seen corresponding path program 292 times [2021-08-21 11:54:48,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:48,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774552630] [2021-08-21 11:54:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:48,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:48,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:48,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774552630] [2021-08-21 11:54:48,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774552630] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:48,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:48,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:48,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048221193] [2021-08-21 11:54:48,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:48,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:48,624 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:50,069 INFO L93 Difference]: Finished difference Result 18012 states and 47026 transitions. [2021-08-21 11:54:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:50,096 INFO L225 Difference]: With dead ends: 18012 [2021-08-21 11:54:50,096 INFO L226 Difference]: Without dead ends: 18012 [2021-08-21 11:54:50,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1276.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18012 states. [2021-08-21 11:54:50,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18012 to 5542. [2021-08-21 11:54:50,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5540 states have (on average 2.6945848375451265) internal successors, (14928), 5541 states have internal predecessors, (14928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 14928 transitions. [2021-08-21 11:54:50,250 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 14928 transitions. Word has length 114 [2021-08-21 11:54:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:50,250 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 14928 transitions. [2021-08-21 11:54:50,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 14928 transitions. [2021-08-21 11:54:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:50,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:50,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:50,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-08-21 11:54:50,257 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:50,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1657753016, now seen corresponding path program 293 times [2021-08-21 11:54:50,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:50,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306979414] [2021-08-21 11:54:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:50,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:50,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:50,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306979414] [2021-08-21 11:54:50,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306979414] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:50,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:50,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:50,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681086573] [2021-08-21 11:54:50,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:50,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:50,656 INFO L87 Difference]: Start difference. First operand 5542 states and 14928 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:52,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:52,136 INFO L93 Difference]: Finished difference Result 17194 states and 45009 transitions. [2021-08-21 11:54:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:52,136 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:52,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:52,165 INFO L225 Difference]: With dead ends: 17194 [2021-08-21 11:54:52,165 INFO L226 Difference]: Without dead ends: 17194 [2021-08-21 11:54:52,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1274.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17194 states. [2021-08-21 11:54:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17194 to 5590. [2021-08-21 11:54:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5588 states have (on average 2.69613457408733) internal successors, (15066), 5589 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:52,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 15066 transitions. [2021-08-21 11:54:52,318 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 15066 transitions. Word has length 114 [2021-08-21 11:54:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:52,318 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 15066 transitions. [2021-08-21 11:54:52,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 15066 transitions. [2021-08-21 11:54:52,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:52,325 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:52,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:52,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-08-21 11:54:52,325 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1705195652, now seen corresponding path program 294 times [2021-08-21 11:54:52,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:52,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445092089] [2021-08-21 11:54:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:52,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:52,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:52,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445092089] [2021-08-21 11:54:52,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445092089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:52,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:52,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:52,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786373455] [2021-08-21 11:54:52,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:52,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:52,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:52,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:52,724 INFO L87 Difference]: Start difference. First operand 5590 states and 15066 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:54,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:54,233 INFO L93 Difference]: Finished difference Result 17094 states and 44727 transitions. [2021-08-21 11:54:54,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:54,233 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:54,260 INFO L225 Difference]: With dead ends: 17094 [2021-08-21 11:54:54,260 INFO L226 Difference]: Without dead ends: 17094 [2021-08-21 11:54:54,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1237.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2021-08-21 11:54:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 5574. [2021-08-21 11:54:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5574 states, 5572 states have (on average 2.69562096195262) internal successors, (15020), 5573 states have internal predecessors, (15020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5574 states to 5574 states and 15020 transitions. [2021-08-21 11:54:54,409 INFO L78 Accepts]: Start accepts. Automaton has 5574 states and 15020 transitions. Word has length 114 [2021-08-21 11:54:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:54,410 INFO L470 AbstractCegarLoop]: Abstraction has 5574 states and 15020 transitions. [2021-08-21 11:54:54,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:54,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5574 states and 15020 transitions. [2021-08-21 11:54:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:54,416 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:54,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:54,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-08-21 11:54:54,416 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:54,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1786507028, now seen corresponding path program 295 times [2021-08-21 11:54:54,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:54,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657238790] [2021-08-21 11:54:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:54,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:54,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:54,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657238790] [2021-08-21 11:54:54,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657238790] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:54,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:54,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:54,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173715752] [2021-08-21 11:54:54,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:54,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:54,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:54,859 INFO L87 Difference]: Start difference. First operand 5574 states and 15020 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:56,326 INFO L93 Difference]: Finished difference Result 14355 states and 37679 transitions. [2021-08-21 11:54:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:56,352 INFO L225 Difference]: With dead ends: 14355 [2021-08-21 11:54:56,352 INFO L226 Difference]: Without dead ends: 14355 [2021-08-21 11:54:56,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1284.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:56,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14355 states. [2021-08-21 11:54:56,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14355 to 5446. [2021-08-21 11:54:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5446 states, 5444 states have (on average 2.691403379867744) internal successors, (14652), 5445 states have internal predecessors, (14652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5446 states to 5446 states and 14652 transitions. [2021-08-21 11:54:56,488 INFO L78 Accepts]: Start accepts. Automaton has 5446 states and 14652 transitions. Word has length 114 [2021-08-21 11:54:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:56,489 INFO L470 AbstractCegarLoop]: Abstraction has 5446 states and 14652 transitions. [2021-08-21 11:54:56,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5446 states and 14652 transitions. [2021-08-21 11:54:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:56,495 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:56,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:56,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-08-21 11:54:56,495 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:56,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:56,495 INFO L82 PathProgramCache]: Analyzing trace with hash -705152658, now seen corresponding path program 296 times [2021-08-21 11:54:56,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:56,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855730891] [2021-08-21 11:54:56,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:56,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:56,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:56,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855730891] [2021-08-21 11:54:56,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855730891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:56,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:56,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:56,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83782335] [2021-08-21 11:54:56,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:56,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:56,888 INFO L87 Difference]: Start difference. First operand 5446 states and 14652 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:58,332 INFO L93 Difference]: Finished difference Result 12409 states and 32670 transitions. [2021-08-21 11:54:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:54:58,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:54:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:58,351 INFO L225 Difference]: With dead ends: 12409 [2021-08-21 11:54:58,352 INFO L226 Difference]: Without dead ends: 12409 [2021-08-21 11:54:58,352 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1231.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:54:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12409 states. [2021-08-21 11:54:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12409 to 5526. [2021-08-21 11:54:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5524 states have (on average 2.6940622737146995) internal successors, (14882), 5525 states have internal predecessors, (14882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 14882 transitions. [2021-08-21 11:54:58,474 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 14882 transitions. Word has length 114 [2021-08-21 11:54:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:58,474 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 14882 transitions. [2021-08-21 11:54:58,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 14882 transitions. [2021-08-21 11:54:58,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:54:58,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:58,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:58,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-08-21 11:54:58,481 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:54:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:58,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1944272756, now seen corresponding path program 297 times [2021-08-21 11:54:58,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:58,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950104150] [2021-08-21 11:54:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:58,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:58,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:58,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950104150] [2021-08-21 11:54:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950104150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:58,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:54:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804255006] [2021-08-21 11:54:58,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:54:58,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:58,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:54:58,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:54:58,867 INFO L87 Difference]: Start difference. First operand 5526 states and 14882 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:00,349 INFO L93 Difference]: Finished difference Result 13182 states and 34402 transitions. [2021-08-21 11:55:00,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:00,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:00,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:00,374 INFO L225 Difference]: With dead ends: 13182 [2021-08-21 11:55:00,374 INFO L226 Difference]: Without dead ends: 13182 [2021-08-21 11:55:00,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1230.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13182 states. [2021-08-21 11:55:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13182 to 5510. [2021-08-21 11:55:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5508 states have (on average 2.693536673928831) internal successors, (14836), 5509 states have internal predecessors, (14836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 14836 transitions. [2021-08-21 11:55:00,509 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 14836 transitions. Word has length 114 [2021-08-21 11:55:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:00,555 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 14836 transitions. [2021-08-21 11:55:00,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:00,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 14836 transitions. [2021-08-21 11:55:00,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:00,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:00,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:00,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-08-21 11:55:00,561 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:00,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1140352944, now seen corresponding path program 298 times [2021-08-21 11:55:00,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:00,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026392441] [2021-08-21 11:55:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:00,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:00,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:00,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:00,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026392441] [2021-08-21 11:55:00,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026392441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:00,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:00,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:00,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588114357] [2021-08-21 11:55:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:00,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:00,951 INFO L87 Difference]: Start difference. First operand 5510 states and 14836 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:02,457 INFO L93 Difference]: Finished difference Result 16125 states and 42020 transitions. [2021-08-21 11:55:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:02,458 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:02,485 INFO L225 Difference]: With dead ends: 16125 [2021-08-21 11:55:02,486 INFO L226 Difference]: Without dead ends: 16125 [2021-08-21 11:55:02,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1256.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:02,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2021-08-21 11:55:02,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 5526. [2021-08-21 11:55:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5524 states have (on average 2.6940622737146995) internal successors, (14882), 5525 states have internal predecessors, (14882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 14882 transitions. [2021-08-21 11:55:02,641 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 14882 transitions. Word has length 114 [2021-08-21 11:55:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:02,642 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 14882 transitions. [2021-08-21 11:55:02,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 14882 transitions. [2021-08-21 11:55:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:02,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:02,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:02,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-08-21 11:55:02,648 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash 208334316, now seen corresponding path program 299 times [2021-08-21 11:55:02,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:02,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997539093] [2021-08-21 11:55:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:02,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:03,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:03,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997539093] [2021-08-21 11:55:03,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997539093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:03,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:03,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:03,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261706877] [2021-08-21 11:55:03,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:03,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:03,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:03,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:03,100 INFO L87 Difference]: Start difference. First operand 5526 states and 14882 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:04,578 INFO L93 Difference]: Finished difference Result 13350 states and 34858 transitions. [2021-08-21 11:55:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:04,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:04,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:04,600 INFO L225 Difference]: With dead ends: 13350 [2021-08-21 11:55:04,600 INFO L226 Difference]: Without dead ends: 13350 [2021-08-21 11:55:04,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1268.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13350 states. [2021-08-21 11:55:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13350 to 5494. [2021-08-21 11:55:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5492 states have (on average 2.6930080116533137) internal successors, (14790), 5493 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 14790 transitions. [2021-08-21 11:55:04,730 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 14790 transitions. Word has length 114 [2021-08-21 11:55:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:04,730 INFO L470 AbstractCegarLoop]: Abstraction has 5494 states and 14790 transitions. [2021-08-21 11:55:04,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 14790 transitions. [2021-08-21 11:55:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:04,737 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:04,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:04,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-08-21 11:55:04,737 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1273110698, now seen corresponding path program 300 times [2021-08-21 11:55:04,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:04,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846337681] [2021-08-21 11:55:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:04,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:05,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:05,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846337681] [2021-08-21 11:55:05,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846337681] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:05,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:05,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:05,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498367003] [2021-08-21 11:55:05,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:05,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:05,175 INFO L87 Difference]: Start difference. First operand 5494 states and 14790 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:06,737 INFO L93 Difference]: Finished difference Result 16605 states and 43352 transitions. [2021-08-21 11:55:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:06,764 INFO L225 Difference]: With dead ends: 16605 [2021-08-21 11:55:06,765 INFO L226 Difference]: Without dead ends: 16605 [2021-08-21 11:55:06,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1362.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16605 states. [2021-08-21 11:55:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16605 to 5542. [2021-08-21 11:55:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 5540 states have (on average 2.6945848375451265) internal successors, (14928), 5541 states have internal predecessors, (14928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 14928 transitions. [2021-08-21 11:55:06,914 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 14928 transitions. Word has length 114 [2021-08-21 11:55:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:06,914 INFO L470 AbstractCegarLoop]: Abstraction has 5542 states and 14928 transitions. [2021-08-21 11:55:06,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 14928 transitions. [2021-08-21 11:55:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:06,921 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:06,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:06,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-08-21 11:55:06,921 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:06,921 INFO L82 PathProgramCache]: Analyzing trace with hash 341092070, now seen corresponding path program 301 times [2021-08-21 11:55:06,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:06,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699638822] [2021-08-21 11:55:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:06,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:07,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:07,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699638822] [2021-08-21 11:55:07,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699638822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:07,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:07,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:07,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524150381] [2021-08-21 11:55:07,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:07,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:07,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:07,361 INFO L87 Difference]: Start difference. First operand 5542 states and 14928 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:08,882 INFO L93 Difference]: Finished difference Result 16505 states and 43070 transitions. [2021-08-21 11:55:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:08,908 INFO L225 Difference]: With dead ends: 16505 [2021-08-21 11:55:08,908 INFO L226 Difference]: Without dead ends: 16505 [2021-08-21 11:55:08,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1305.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16505 states. [2021-08-21 11:55:09,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16505 to 5526. [2021-08-21 11:55:09,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5524 states have (on average 2.6940622737146995) internal successors, (14882), 5525 states have internal predecessors, (14882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 14882 transitions. [2021-08-21 11:55:09,055 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 14882 transitions. Word has length 114 [2021-08-21 11:55:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:09,056 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 14882 transitions. [2021-08-21 11:55:09,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 14882 transitions. [2021-08-21 11:55:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:09,062 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:09,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:09,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-08-21 11:55:09,062 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1144356686, now seen corresponding path program 302 times [2021-08-21 11:55:09,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:09,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327297547] [2021-08-21 11:55:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:09,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:09,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:09,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:09,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327297547] [2021-08-21 11:55:09,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327297547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:09,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:09,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:09,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610809052] [2021-08-21 11:55:09,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:09,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:09,471 INFO L87 Difference]: Start difference. First operand 5526 states and 14882 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:10,947 INFO L93 Difference]: Finished difference Result 13766 states and 36022 transitions. [2021-08-21 11:55:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:10,970 INFO L225 Difference]: With dead ends: 13766 [2021-08-21 11:55:10,970 INFO L226 Difference]: Without dead ends: 13766 [2021-08-21 11:55:10,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1276.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13766 states. [2021-08-21 11:55:11,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13766 to 5462. [2021-08-21 11:55:11,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5462 states, 5460 states have (on average 2.691941391941392) internal successors, (14698), 5461 states have internal predecessors, (14698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5462 states to 5462 states and 14698 transitions. [2021-08-21 11:55:11,103 INFO L78 Accepts]: Start accepts. Automaton has 5462 states and 14698 transitions. Word has length 114 [2021-08-21 11:55:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:11,103 INFO L470 AbstractCegarLoop]: Abstraction has 5462 states and 14698 transitions. [2021-08-21 11:55:11,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5462 states and 14698 transitions. [2021-08-21 11:55:11,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:11,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:11,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:11,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-08-21 11:55:11,110 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:11,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1618085432, now seen corresponding path program 303 times [2021-08-21 11:55:11,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:11,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637699358] [2021-08-21 11:55:11,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:11,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:11,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:11,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637699358] [2021-08-21 11:55:11,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637699358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:11,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:11,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:11,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470918730] [2021-08-21 11:55:11,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:11,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:11,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:11,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:11,532 INFO L87 Difference]: Start difference. First operand 5462 states and 14698 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:13,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:13,015 INFO L93 Difference]: Finished difference Result 12500 states and 32749 transitions. [2021-08-21 11:55:13,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:13,016 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:13,036 INFO L225 Difference]: With dead ends: 12500 [2021-08-21 11:55:13,036 INFO L226 Difference]: Without dead ends: 12500 [2021-08-21 11:55:13,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1273.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:13,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12500 states. [2021-08-21 11:55:13,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12500 to 5526. [2021-08-21 11:55:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5524 states have (on average 2.6940622737146995) internal successors, (14882), 5525 states have internal predecessors, (14882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 14882 transitions. [2021-08-21 11:55:13,157 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 14882 transitions. Word has length 114 [2021-08-21 11:55:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:13,158 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 14882 transitions. [2021-08-21 11:55:13,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 14882 transitions. [2021-08-21 11:55:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:13,164 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:13,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:13,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-08-21 11:55:13,165 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:13,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:13,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1744863236, now seen corresponding path program 304 times [2021-08-21 11:55:13,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:13,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680018057] [2021-08-21 11:55:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:13,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:13,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:13,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680018057] [2021-08-21 11:55:13,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680018057] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:13,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:13,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:13,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971537590] [2021-08-21 11:55:13,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:13,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:13,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:13,580 INFO L87 Difference]: Start difference. First operand 5526 states and 14882 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:15,070 INFO L93 Difference]: Finished difference Result 12400 states and 32467 transitions. [2021-08-21 11:55:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:15,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:15,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:15,093 INFO L225 Difference]: With dead ends: 12400 [2021-08-21 11:55:15,093 INFO L226 Difference]: Without dead ends: 12400 [2021-08-21 11:55:15,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1268.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:15,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12400 states. [2021-08-21 11:55:15,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12400 to 5510. [2021-08-21 11:55:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5508 states have (on average 2.693536673928831) internal successors, (14836), 5509 states have internal predecessors, (14836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 14836 transitions. [2021-08-21 11:55:15,239 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 14836 transitions. Word has length 114 [2021-08-21 11:55:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:15,239 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 14836 transitions. [2021-08-21 11:55:15,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 14836 transitions. [2021-08-21 11:55:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:15,275 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:15,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:15,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-08-21 11:55:15,275 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:15,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1746839444, now seen corresponding path program 305 times [2021-08-21 11:55:15,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:15,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68709905] [2021-08-21 11:55:15,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:15,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:15,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:15,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68709905] [2021-08-21 11:55:15,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68709905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:15,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:15,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:15,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289938439] [2021-08-21 11:55:15,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:15,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:15,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:15,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:15,710 INFO L87 Difference]: Start difference. First operand 5510 states and 14836 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:17,251 INFO L93 Difference]: Finished difference Result 12688 states and 33295 transitions. [2021-08-21 11:55:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:17,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:17,272 INFO L225 Difference]: With dead ends: 12688 [2021-08-21 11:55:17,272 INFO L226 Difference]: Without dead ends: 12688 [2021-08-21 11:55:17,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1325.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12688 states. [2021-08-21 11:55:17,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12688 to 5478. [2021-08-21 11:55:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5476 states have (on average 2.6924762600438275) internal successors, (14744), 5477 states have internal predecessors, (14744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 14744 transitions. [2021-08-21 11:55:17,387 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 14744 transitions. Word has length 114 [2021-08-21 11:55:17,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:17,387 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 14744 transitions. [2021-08-21 11:55:17,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:17,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 14744 transitions. [2021-08-21 11:55:17,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:17,393 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:17,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:17,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-08-21 11:55:17,393 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:17,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1861637966, now seen corresponding path program 306 times [2021-08-21 11:55:17,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:17,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683571551] [2021-08-21 11:55:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:17,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:17,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:17,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:17,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683571551] [2021-08-21 11:55:17,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683571551] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:17,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:17,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:17,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049484867] [2021-08-21 11:55:17,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:17,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:17,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:17,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:17,864 INFO L87 Difference]: Start difference. First operand 5478 states and 14744 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:19,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:19,301 INFO L93 Difference]: Finished difference Result 9533 states and 25083 transitions. [2021-08-21 11:55:19,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:19,301 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:19,316 INFO L225 Difference]: With dead ends: 9533 [2021-08-21 11:55:19,316 INFO L226 Difference]: Without dead ends: 9533 [2021-08-21 11:55:19,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1259.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9533 states. [2021-08-21 11:55:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9533 to 5398. [2021-08-21 11:55:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5396 states have (on average 2.689770200148258) internal successors, (14514), 5397 states have internal predecessors, (14514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 14514 transitions. [2021-08-21 11:55:19,417 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 14514 transitions. Word has length 114 [2021-08-21 11:55:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:19,417 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 14514 transitions. [2021-08-21 11:55:19,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 14514 transitions. [2021-08-21 11:55:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:19,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:19,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:19,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-08-21 11:55:19,424 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 352927888, now seen corresponding path program 307 times [2021-08-21 11:55:19,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:19,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570344174] [2021-08-21 11:55:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:19,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:19,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:19,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570344174] [2021-08-21 11:55:19,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570344174] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:19,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:19,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:19,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098242064] [2021-08-21 11:55:19,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:19,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:19,817 INFO L87 Difference]: Start difference. First operand 5398 states and 14514 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:21,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:21,250 INFO L93 Difference]: Finished difference Result 7064 states and 18601 transitions. [2021-08-21 11:55:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:21,250 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:21,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:21,261 INFO L225 Difference]: With dead ends: 7064 [2021-08-21 11:55:21,262 INFO L226 Difference]: Without dead ends: 7064 [2021-08-21 11:55:21,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1259.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2021-08-21 11:55:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 5222. [2021-08-21 11:55:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:21,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:21,352 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:21,352 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:21,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:21,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:21,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:21,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-08-21 11:55:21,359 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1423947376, now seen corresponding path program 308 times [2021-08-21 11:55:21,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:21,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507576671] [2021-08-21 11:55:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:21,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:21,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:21,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:21,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507576671] [2021-08-21 11:55:21,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507576671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:21,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:21,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:21,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025213516] [2021-08-21 11:55:21,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:21,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:21,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:21,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:21,768 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:23,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:23,231 INFO L93 Difference]: Finished difference Result 9492 states and 24958 transitions. [2021-08-21 11:55:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:23,231 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:23,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:23,245 INFO L225 Difference]: With dead ends: 9492 [2021-08-21 11:55:23,245 INFO L226 Difference]: Without dead ends: 9492 [2021-08-21 11:55:23,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1260.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-08-21 11:55:23,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 5238. [2021-08-21 11:55:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5236 states have (on average 2.6829640947288005) internal successors, (14048), 5237 states have internal predecessors, (14048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14048 transitions. [2021-08-21 11:55:23,343 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14048 transitions. Word has length 114 [2021-08-21 11:55:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:23,343 INFO L470 AbstractCegarLoop]: Abstraction has 5238 states and 14048 transitions. [2021-08-21 11:55:23,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14048 transitions. [2021-08-21 11:55:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:23,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:23,352 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:23,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-08-21 11:55:23,352 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:23,352 INFO L82 PathProgramCache]: Analyzing trace with hash 184827278, now seen corresponding path program 309 times [2021-08-21 11:55:23,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:23,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111801000] [2021-08-21 11:55:23,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:23,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:23,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:23,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:23,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111801000] [2021-08-21 11:55:23,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111801000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:23,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:23,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:23,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415230788] [2021-08-21 11:55:23,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:23,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:23,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:23,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:23,741 INFO L87 Difference]: Start difference. First operand 5238 states and 14048 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:25,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:25,178 INFO L93 Difference]: Finished difference Result 7892 states and 20478 transitions. [2021-08-21 11:55:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:25,178 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:25,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:25,190 INFO L225 Difference]: With dead ends: 7892 [2021-08-21 11:55:25,190 INFO L226 Difference]: Without dead ends: 7892 [2021-08-21 11:55:25,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1226.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:25,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2021-08-21 11:55:25,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 5190. [2021-08-21 11:55:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5188 states have (on average 2.6811873554356205) internal successors, (13910), 5189 states have internal predecessors, (13910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 13910 transitions. [2021-08-21 11:55:25,306 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 13910 transitions. Word has length 114 [2021-08-21 11:55:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:25,307 INFO L470 AbstractCegarLoop]: Abstraction has 5190 states and 13910 transitions. [2021-08-21 11:55:25,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:25,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 13910 transitions. [2021-08-21 11:55:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:25,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:25,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:25,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-08-21 11:55:25,313 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash -735545298, now seen corresponding path program 310 times [2021-08-21 11:55:25,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:25,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331571087] [2021-08-21 11:55:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:25,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:25,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:25,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331571087] [2021-08-21 11:55:25,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331571087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:25,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:25,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932276061] [2021-08-21 11:55:25,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:25,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:25,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:25,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:25,770 INFO L87 Difference]: Start difference. First operand 5190 states and 13910 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:27,159 INFO L93 Difference]: Finished difference Result 10712 states and 27925 transitions. [2021-08-21 11:55:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:27,175 INFO L225 Difference]: With dead ends: 10712 [2021-08-21 11:55:27,175 INFO L226 Difference]: Without dead ends: 10712 [2021-08-21 11:55:27,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1259.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:27,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states. [2021-08-21 11:55:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 5222. [2021-08-21 11:55:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:27,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:27,285 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:27,285 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:27,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:27,291 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:27,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:27,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-08-21 11:55:27,292 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:27,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1974665396, now seen corresponding path program 311 times [2021-08-21 11:55:27,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:27,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122914584] [2021-08-21 11:55:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:27,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:27,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:27,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122914584] [2021-08-21 11:55:27,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122914584] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:27,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:27,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:27,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126899384] [2021-08-21 11:55:27,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:27,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:27,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:27,722 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:29,180 INFO L93 Difference]: Finished difference Result 11485 states and 29657 transitions. [2021-08-21 11:55:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:29,198 INFO L225 Difference]: With dead ends: 11485 [2021-08-21 11:55:29,198 INFO L226 Difference]: Without dead ends: 11485 [2021-08-21 11:55:29,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1269.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11485 states. [2021-08-21 11:55:29,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11485 to 5206. [2021-08-21 11:55:29,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 5204 states have (on average 2.681783243658724) internal successors, (13956), 5205 states have internal predecessors, (13956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 13956 transitions. [2021-08-21 11:55:29,312 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 13956 transitions. Word has length 114 [2021-08-21 11:55:29,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:29,312 INFO L470 AbstractCegarLoop]: Abstraction has 5206 states and 13956 transitions. [2021-08-21 11:55:29,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:29,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 13956 transitions. [2021-08-21 11:55:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:29,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:29,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:29,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-08-21 11:55:29,319 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:29,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1109960304, now seen corresponding path program 312 times [2021-08-21 11:55:29,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:29,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131728906] [2021-08-21 11:55:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:29,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:29,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:29,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131728906] [2021-08-21 11:55:29,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131728906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:29,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:29,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:29,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51798145] [2021-08-21 11:55:29,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:29,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:29,713 INFO L87 Difference]: Start difference. First operand 5206 states and 13956 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:31,180 INFO L93 Difference]: Finished difference Result 10851 states and 28142 transitions. [2021-08-21 11:55:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:31,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:31,199 INFO L225 Difference]: With dead ends: 10851 [2021-08-21 11:55:31,199 INFO L226 Difference]: Without dead ends: 10851 [2021-08-21 11:55:31,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1291.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:31,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2021-08-21 11:55:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 5222. [2021-08-21 11:55:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:31,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:31,323 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:31,323 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:31,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:31,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:31,329 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:31,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:31,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-08-21 11:55:31,329 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:31,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:31,330 INFO L82 PathProgramCache]: Analyzing trace with hash 177941676, now seen corresponding path program 313 times [2021-08-21 11:55:31,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:31,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715337352] [2021-08-21 11:55:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:31,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:31,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:31,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715337352] [2021-08-21 11:55:31,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715337352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:31,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:31,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:31,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802235384] [2021-08-21 11:55:31,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:31,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:31,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:31,738 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:33,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:33,157 INFO L93 Difference]: Finished difference Result 8076 states and 20980 transitions. [2021-08-21 11:55:33,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:33,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:33,170 INFO L225 Difference]: With dead ends: 8076 [2021-08-21 11:55:33,170 INFO L226 Difference]: Without dead ends: 8076 [2021-08-21 11:55:33,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1285.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8076 states. [2021-08-21 11:55:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8076 to 5158. [2021-08-21 11:55:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5156 states have (on average 2.6799844840961984) internal successors, (13818), 5157 states have internal predecessors, (13818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:33,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 13818 transitions. [2021-08-21 11:55:33,262 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 13818 transitions. Word has length 114 [2021-08-21 11:55:33,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:33,262 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 13818 transitions. [2021-08-21 11:55:33,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:33,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 13818 transitions. [2021-08-21 11:55:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:33,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:33,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:33,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-08-21 11:55:33,269 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:33,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1317309266, now seen corresponding path program 314 times [2021-08-21 11:55:33,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:33,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562199245] [2021-08-21 11:55:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:33,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:33,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:33,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562199245] [2021-08-21 11:55:33,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562199245] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:33,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:33,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:33,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843458857] [2021-08-21 11:55:33,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:33,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:33,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:33,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:33,668 INFO L87 Difference]: Start difference. First operand 5158 states and 13818 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:35,112 INFO L93 Difference]: Finished difference Result 11240 states and 29395 transitions. [2021-08-21 11:55:35,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:35,112 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:35,169 INFO L225 Difference]: With dead ends: 11240 [2021-08-21 11:55:35,169 INFO L226 Difference]: Without dead ends: 11240 [2021-08-21 11:55:35,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1236.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11240 states. [2021-08-21 11:55:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11240 to 5222. [2021-08-21 11:55:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:35,250 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:35,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:35,250 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:35,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:35,255 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:35,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:35,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-08-21 11:55:35,256 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:35,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash 78189168, now seen corresponding path program 315 times [2021-08-21 11:55:35,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:35,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650350414] [2021-08-21 11:55:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:35,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:35,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:35,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650350414] [2021-08-21 11:55:35,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650350414] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:35,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:35,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:35,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568553617] [2021-08-21 11:55:35,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:35,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:35,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:35,677 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:37,206 INFO L93 Difference]: Finished difference Result 12013 states and 31127 transitions. [2021-08-21 11:55:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:37,224 INFO L225 Difference]: With dead ends: 12013 [2021-08-21 11:55:37,224 INFO L226 Difference]: Without dead ends: 12013 [2021-08-21 11:55:37,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1299.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12013 states. [2021-08-21 11:55:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12013 to 5206. [2021-08-21 11:55:37,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 5204 states have (on average 2.681783243658724) internal successors, (13956), 5205 states have internal predecessors, (13956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 13956 transitions. [2021-08-21 11:55:37,348 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 13956 transitions. Word has length 114 [2021-08-21 11:55:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:37,348 INFO L470 AbstractCegarLoop]: Abstraction has 5206 states and 13956 transitions. [2021-08-21 11:55:37,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 13956 transitions. [2021-08-21 11:55:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:37,354 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:37,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:37,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-08-21 11:55:37,354 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:37,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1132152428, now seen corresponding path program 316 times [2021-08-21 11:55:37,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:37,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663394328] [2021-08-21 11:55:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:37,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:37,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:37,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663394328] [2021-08-21 11:55:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663394328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:37,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:37,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:37,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978410889] [2021-08-21 11:55:37,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:37,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:37,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:37,809 INFO L87 Difference]: Start difference. First operand 5206 states and 13956 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:39,312 INFO L93 Difference]: Finished difference Result 14956 states and 38745 transitions. [2021-08-21 11:55:39,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:39,313 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:39,336 INFO L225 Difference]: With dead ends: 14956 [2021-08-21 11:55:39,337 INFO L226 Difference]: Without dead ends: 14956 [2021-08-21 11:55:39,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1283.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:39,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14956 states. [2021-08-21 11:55:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14956 to 5222. [2021-08-21 11:55:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:39,477 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:39,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:39,477 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:39,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:39,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:39,483 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:39,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:39,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-08-21 11:55:39,483 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2064171056, now seen corresponding path program 317 times [2021-08-21 11:55:39,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:39,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122407820] [2021-08-21 11:55:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:39,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:39,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:39,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122407820] [2021-08-21 11:55:39,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122407820] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:39,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:39,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:39,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207052141] [2021-08-21 11:55:39,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:39,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:39,906 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:41,322 INFO L93 Difference]: Finished difference Result 12181 states and 31583 transitions. [2021-08-21 11:55:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:41,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:41,342 INFO L225 Difference]: With dead ends: 12181 [2021-08-21 11:55:41,342 INFO L226 Difference]: Without dead ends: 12181 [2021-08-21 11:55:41,342 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1284.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12181 states. [2021-08-21 11:55:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12181 to 5190. [2021-08-21 11:55:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5188 states have (on average 2.6811873554356205) internal successors, (13910), 5189 states have internal predecessors, (13910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 13910 transitions. [2021-08-21 11:55:41,468 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 13910 transitions. Word has length 114 [2021-08-21 11:55:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:41,468 INFO L470 AbstractCegarLoop]: Abstraction has 5190 states and 13910 transitions. [2021-08-21 11:55:41,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 13910 transitions. [2021-08-21 11:55:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:41,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:41,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:41,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-08-21 11:55:41,475 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash -999394674, now seen corresponding path program 318 times [2021-08-21 11:55:41,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:41,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193618107] [2021-08-21 11:55:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:41,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:41,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:41,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193618107] [2021-08-21 11:55:41,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193618107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:41,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:41,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:41,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242587851] [2021-08-21 11:55:41,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:41,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:41,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:41,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:41,869 INFO L87 Difference]: Start difference. First operand 5190 states and 13910 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:43,385 INFO L93 Difference]: Finished difference Result 11363 states and 29566 transitions. [2021-08-21 11:55:43,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:43,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:43,403 INFO L225 Difference]: With dead ends: 11363 [2021-08-21 11:55:43,403 INFO L226 Difference]: Without dead ends: 11363 [2021-08-21 11:55:43,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1283.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:43,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11363 states. [2021-08-21 11:55:43,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11363 to 5238. [2021-08-21 11:55:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5238 states, 5236 states have (on average 2.6829640947288005) internal successors, (14048), 5237 states have internal predecessors, (14048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5238 states to 5238 states and 14048 transitions. [2021-08-21 11:55:43,523 INFO L78 Accepts]: Start accepts. Automaton has 5238 states and 14048 transitions. Word has length 114 [2021-08-21 11:55:43,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:43,523 INFO L470 AbstractCegarLoop]: Abstraction has 5238 states and 14048 transitions. [2021-08-21 11:55:43,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 5238 states and 14048 transitions. [2021-08-21 11:55:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:43,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:43,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:43,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-08-21 11:55:43,529 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1931413302, now seen corresponding path program 319 times [2021-08-21 11:55:43,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:43,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509898179] [2021-08-21 11:55:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:43,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:43,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:43,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509898179] [2021-08-21 11:55:43,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509898179] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:43,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:43,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:43,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475115187] [2021-08-21 11:55:43,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:43,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:43,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:43,940 INFO L87 Difference]: Start difference. First operand 5238 states and 14048 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:45,404 INFO L93 Difference]: Finished difference Result 11263 states and 29284 transitions. [2021-08-21 11:55:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:45,422 INFO L225 Difference]: With dead ends: 11263 [2021-08-21 11:55:45,422 INFO L226 Difference]: Without dead ends: 11263 [2021-08-21 11:55:45,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1276.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-08-21 11:55:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 5222. [2021-08-21 11:55:45,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 5220 states have (on average 2.682375478927203) internal successors, (14002), 5221 states have internal predecessors, (14002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 14002 transitions. [2021-08-21 11:55:45,543 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 14002 transitions. Word has length 114 [2021-08-21 11:55:45,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:45,543 INFO L470 AbstractCegarLoop]: Abstraction has 5222 states and 14002 transitions. [2021-08-21 11:55:45,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 14002 transitions. [2021-08-21 11:55:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:45,550 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:45,550 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:45,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-08-21 11:55:45,551 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:45,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:45,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1128148686, now seen corresponding path program 320 times [2021-08-21 11:55:45,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:45,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124811226] [2021-08-21 11:55:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:45,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:45,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:45,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124811226] [2021-08-21 11:55:45,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124811226] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:45,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:45,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:45,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256805849] [2021-08-21 11:55:45,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:45,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:45,959 INFO L87 Difference]: Start difference. First operand 5222 states and 14002 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:47,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:47,377 INFO L93 Difference]: Finished difference Result 8524 states and 22236 transitions. [2021-08-21 11:55:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:47,377 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:47,391 INFO L225 Difference]: With dead ends: 8524 [2021-08-21 11:55:47,391 INFO L226 Difference]: Without dead ends: 8524 [2021-08-21 11:55:47,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1257.8ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:47,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8524 states. [2021-08-21 11:55:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8524 to 5094. [2021-08-21 11:55:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5094 states, 5092 states have (on average 2.6775333857030637) internal successors, (13634), 5093 states have internal predecessors, (13634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5094 states to 5094 states and 13634 transitions. [2021-08-21 11:55:47,511 INFO L78 Accepts]: Start accepts. Automaton has 5094 states and 13634 transitions. Word has length 114 [2021-08-21 11:55:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:47,511 INFO L470 AbstractCegarLoop]: Abstraction has 5094 states and 13634 transitions. [2021-08-21 11:55:47,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5094 states and 13634 transitions. [2021-08-21 11:55:47,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:47,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:47,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:47,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-08-21 11:55:47,517 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash -46794316, now seen corresponding path program 321 times [2021-08-21 11:55:47,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:47,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117390975] [2021-08-21 11:55:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:47,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:47,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:47,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117390975] [2021-08-21 11:55:47,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117390975] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:47,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:47,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:47,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55935666] [2021-08-21 11:55:47,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:47,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:47,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:47,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:47,939 INFO L87 Difference]: Start difference. First operand 5094 states and 13634 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:49,384 INFO L93 Difference]: Finished difference Result 11768 states and 30865 transitions. [2021-08-21 11:55:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:49,402 INFO L225 Difference]: With dead ends: 11768 [2021-08-21 11:55:49,402 INFO L226 Difference]: Without dead ends: 11768 [2021-08-21 11:55:49,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1236.7ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:49,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11768 states. [2021-08-21 11:55:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11768 to 5174. [2021-08-21 11:55:49,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5172 states have (on average 2.680587780355762) internal successors, (13864), 5173 states have internal predecessors, (13864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 13864 transitions. [2021-08-21 11:55:49,521 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 13864 transitions. Word has length 114 [2021-08-21 11:55:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:49,521 INFO L470 AbstractCegarLoop]: Abstraction has 5174 states and 13864 transitions. [2021-08-21 11:55:49,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 13864 transitions. [2021-08-21 11:55:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:49,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:49,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:49,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-08-21 11:55:49,527 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:49,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:49,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1285914414, now seen corresponding path program 322 times [2021-08-21 11:55:49,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:49,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530451656] [2021-08-21 11:55:49,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:49,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:49,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:49,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530451656] [2021-08-21 11:55:49,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530451656] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:49,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:49,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:49,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813292156] [2021-08-21 11:55:49,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:49,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:49,946 INFO L87 Difference]: Start difference. First operand 5174 states and 13864 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:51,398 INFO L93 Difference]: Finished difference Result 12541 states and 32597 transitions. [2021-08-21 11:55:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:51,422 INFO L225 Difference]: With dead ends: 12541 [2021-08-21 11:55:51,422 INFO L226 Difference]: Without dead ends: 12541 [2021-08-21 11:55:51,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1266.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-08-21 11:55:51,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 5158. [2021-08-21 11:55:51,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5156 states have (on average 2.6799844840961984) internal successors, (13818), 5157 states have internal predecessors, (13818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 13818 transitions. [2021-08-21 11:55:51,551 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 13818 transitions. Word has length 114 [2021-08-21 11:55:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:51,551 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 13818 transitions. [2021-08-21 11:55:51,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 13818 transitions. [2021-08-21 11:55:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:51,558 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:51,558 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:51,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-08-21 11:55:51,558 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:51,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1798711286, now seen corresponding path program 323 times [2021-08-21 11:55:51,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:51,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341911508] [2021-08-21 11:55:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:51,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:51,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:51,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:51,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341911508] [2021-08-21 11:55:51,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341911508] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:51,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:51,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:51,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255887847] [2021-08-21 11:55:51,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:51,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:51,965 INFO L87 Difference]: Start difference. First operand 5158 states and 13818 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:53,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:53,442 INFO L93 Difference]: Finished difference Result 15484 states and 40215 transitions. [2021-08-21 11:55:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:53,443 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:53,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:53,466 INFO L225 Difference]: With dead ends: 15484 [2021-08-21 11:55:53,467 INFO L226 Difference]: Without dead ends: 15484 [2021-08-21 11:55:53,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1304.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15484 states. [2021-08-21 11:55:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15484 to 5174. [2021-08-21 11:55:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5172 states have (on average 2.680587780355762) internal successors, (13864), 5173 states have internal predecessors, (13864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 13864 transitions. [2021-08-21 11:55:53,595 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 13864 transitions. Word has length 114 [2021-08-21 11:55:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:53,595 INFO L470 AbstractCegarLoop]: Abstraction has 5174 states and 13864 transitions. [2021-08-21 11:55:53,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:53,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 13864 transitions. [2021-08-21 11:55:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:53,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:53,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:53,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-08-21 11:55:53,601 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:53,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 866692658, now seen corresponding path program 324 times [2021-08-21 11:55:53,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:53,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967112205] [2021-08-21 11:55:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:53,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:54,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:54,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967112205] [2021-08-21 11:55:54,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967112205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:54,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:54,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:54,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932597938] [2021-08-21 11:55:54,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:54,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:54,005 INFO L87 Difference]: Start difference. First operand 5174 states and 13864 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:55,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:55,459 INFO L93 Difference]: Finished difference Result 12709 states and 33053 transitions. [2021-08-21 11:55:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:55,459 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:55,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:55,478 INFO L225 Difference]: With dead ends: 12709 [2021-08-21 11:55:55,478 INFO L226 Difference]: Without dead ends: 12709 [2021-08-21 11:55:55,478 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1294.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:55,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12709 states. [2021-08-21 11:55:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12709 to 5142. [2021-08-21 11:55:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5142 states, 5140 states have (on average 2.6793774319066146) internal successors, (13772), 5141 states have internal predecessors, (13772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 13772 transitions. [2021-08-21 11:55:55,594 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 13772 transitions. Word has length 114 [2021-08-21 11:55:55,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:55,594 INFO L470 AbstractCegarLoop]: Abstraction has 5142 states and 13772 transitions. [2021-08-21 11:55:55,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:55,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 13772 transitions. [2021-08-21 11:55:55,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:55,600 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:55,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:55,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-08-21 11:55:55,600 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:55,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:55,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1931469040, now seen corresponding path program 325 times [2021-08-21 11:55:55,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:55,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812588373] [2021-08-21 11:55:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:55,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:56,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:56,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812588373] [2021-08-21 11:55:56,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812588373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:56,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:56,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:56,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658010908] [2021-08-21 11:55:56,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:56,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:56,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:56,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:56,024 INFO L87 Difference]: Start difference. First operand 5142 states and 13772 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:57,574 INFO L93 Difference]: Finished difference Result 15964 states and 41547 transitions. [2021-08-21 11:55:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:57,574 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:57,600 INFO L225 Difference]: With dead ends: 15964 [2021-08-21 11:55:57,601 INFO L226 Difference]: Without dead ends: 15964 [2021-08-21 11:55:57,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1302.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2021-08-21 11:55:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 5190. [2021-08-21 11:55:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5190 states, 5188 states have (on average 2.6811873554356205) internal successors, (13910), 5189 states have internal predecessors, (13910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5190 states to 5190 states and 13910 transitions. [2021-08-21 11:55:57,752 INFO L78 Accepts]: Start accepts. Automaton has 5190 states and 13910 transitions. Word has length 114 [2021-08-21 11:55:57,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:57,752 INFO L470 AbstractCegarLoop]: Abstraction has 5190 states and 13910 transitions. [2021-08-21 11:55:57,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5190 states and 13910 transitions. [2021-08-21 11:55:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:57,758 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:57,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:57,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-08-21 11:55:57,759 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash 999450412, now seen corresponding path program 326 times [2021-08-21 11:55:57,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:57,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620782724] [2021-08-21 11:55:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:57,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:58,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:58,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620782724] [2021-08-21 11:55:58,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620782724] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:58,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:58,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:55:58,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401237132] [2021-08-21 11:55:58,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:55:58,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:58,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:55:58,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:55:58,195 INFO L87 Difference]: Start difference. First operand 5190 states and 13910 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:59,709 INFO L93 Difference]: Finished difference Result 15864 states and 41265 transitions. [2021-08-21 11:55:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:55:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:55:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:59,735 INFO L225 Difference]: With dead ends: 15864 [2021-08-21 11:55:59,735 INFO L226 Difference]: Without dead ends: 15864 [2021-08-21 11:55:59,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1251.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:55:59,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15864 states. [2021-08-21 11:55:59,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15864 to 5174. [2021-08-21 11:55:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5172 states have (on average 2.680587780355762) internal successors, (13864), 5173 states have internal predecessors, (13864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 13864 transitions. [2021-08-21 11:55:59,879 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 13864 transitions. Word has length 114 [2021-08-21 11:55:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:59,879 INFO L470 AbstractCegarLoop]: Abstraction has 5174 states and 13864 transitions. [2021-08-21 11:55:59,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 13864 transitions. [2021-08-21 11:55:59,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:55:59,886 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:59,886 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:59,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-08-21 11:55:59,886 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:55:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:59,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1802715028, now seen corresponding path program 327 times [2021-08-21 11:55:59,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:59,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285294337] [2021-08-21 11:55:59,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:59,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:00,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:00,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285294337] [2021-08-21 11:56:00,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285294337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:00,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:00,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:00,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877286594] [2021-08-21 11:56:00,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:00,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:00,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:00,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:00,291 INFO L87 Difference]: Start difference. First operand 5174 states and 13864 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:01,716 INFO L93 Difference]: Finished difference Result 13125 states and 34217 transitions. [2021-08-21 11:56:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:01,717 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:01,739 INFO L225 Difference]: With dead ends: 13125 [2021-08-21 11:56:01,739 INFO L226 Difference]: Without dead ends: 13125 [2021-08-21 11:56:01,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1238.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:01,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2021-08-21 11:56:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 5110. [2021-08-21 11:56:01,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5108 states have (on average 2.678151918559123) internal successors, (13680), 5109 states have internal predecessors, (13680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:01,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 13680 transitions. [2021-08-21 11:56:01,864 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 13680 transitions. Word has length 114 [2021-08-21 11:56:01,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:01,864 INFO L470 AbstractCegarLoop]: Abstraction has 5110 states and 13680 transitions. [2021-08-21 11:56:01,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 13680 transitions. [2021-08-21 11:56:01,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:01,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:01,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:01,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-08-21 11:56:01,902 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:01,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:01,902 INFO L82 PathProgramCache]: Analyzing trace with hash -959727090, now seen corresponding path program 328 times [2021-08-21 11:56:01,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:01,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994980101] [2021-08-21 11:56:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:01,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:01,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:02,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:02,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994980101] [2021-08-21 11:56:02,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994980101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:02,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:02,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:02,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032081787] [2021-08-21 11:56:02,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:02,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:02,306 INFO L87 Difference]: Start difference. First operand 5110 states and 13680 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:03,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:03,722 INFO L93 Difference]: Finished difference Result 11859 states and 30944 transitions. [2021-08-21 11:56:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:03,740 INFO L225 Difference]: With dead ends: 11859 [2021-08-21 11:56:03,740 INFO L226 Difference]: Without dead ends: 11859 [2021-08-21 11:56:03,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1246.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2021-08-21 11:56:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 5174. [2021-08-21 11:56:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5174 states, 5172 states have (on average 2.680587780355762) internal successors, (13864), 5173 states have internal predecessors, (13864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5174 states to 5174 states and 13864 transitions. [2021-08-21 11:56:03,849 INFO L78 Accepts]: Start accepts. Automaton has 5174 states and 13864 transitions. Word has length 114 [2021-08-21 11:56:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:03,849 INFO L470 AbstractCegarLoop]: Abstraction has 5174 states and 13864 transitions. [2021-08-21 11:56:03,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 5174 states and 13864 transitions. [2021-08-21 11:56:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:03,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:03,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:03,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-08-21 11:56:03,856 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:03,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:03,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1891745718, now seen corresponding path program 329 times [2021-08-21 11:56:03,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:03,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925965623] [2021-08-21 11:56:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:03,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:04,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:04,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925965623] [2021-08-21 11:56:04,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925965623] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:04,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:04,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:04,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966096187] [2021-08-21 11:56:04,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:04,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:04,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:04,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:04,292 INFO L87 Difference]: Start difference. First operand 5174 states and 13864 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:05,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:05,703 INFO L93 Difference]: Finished difference Result 11759 states and 30662 transitions. [2021-08-21 11:56:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:05,720 INFO L225 Difference]: With dead ends: 11759 [2021-08-21 11:56:05,721 INFO L226 Difference]: Without dead ends: 11759 [2021-08-21 11:56:05,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1272.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11759 states. [2021-08-21 11:56:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11759 to 5158. [2021-08-21 11:56:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5158 states, 5156 states have (on average 2.6799844840961984) internal successors, (13818), 5157 states have internal predecessors, (13818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5158 states to 5158 states and 13818 transitions. [2021-08-21 11:56:05,824 INFO L78 Accepts]: Start accepts. Automaton has 5158 states and 13818 transitions. Word has length 114 [2021-08-21 11:56:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:05,825 INFO L470 AbstractCegarLoop]: Abstraction has 5158 states and 13818 transitions. [2021-08-21 11:56:05,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5158 states and 13818 transitions. [2021-08-21 11:56:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:05,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:05,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:05,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-08-21 11:56:05,830 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:05,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:05,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1088481102, now seen corresponding path program 330 times [2021-08-21 11:56:05,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:05,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988060865] [2021-08-21 11:56:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:05,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:06,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:06,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988060865] [2021-08-21 11:56:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988060865] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:06,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:06,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:06,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283981034] [2021-08-21 11:56:06,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:06,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:06,243 INFO L87 Difference]: Start difference. First operand 5158 states and 13818 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:07,733 INFO L93 Difference]: Finished difference Result 12047 states and 31490 transitions. [2021-08-21 11:56:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:07,752 INFO L225 Difference]: With dead ends: 12047 [2021-08-21 11:56:07,752 INFO L226 Difference]: Without dead ends: 12047 [2021-08-21 11:56:07,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1277.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12047 states. [2021-08-21 11:56:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12047 to 5126. [2021-08-21 11:56:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5124 states have (on average 2.678766588602654) internal successors, (13726), 5125 states have internal predecessors, (13726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:07,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 13726 transitions. [2021-08-21 11:56:07,863 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 13726 transitions. Word has length 114 [2021-08-21 11:56:07,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:07,863 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 13726 transitions. [2021-08-21 11:56:07,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:07,864 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 13726 transitions. [2021-08-21 11:56:07,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:07,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:07,869 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:07,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-08-21 11:56:07,869 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:07,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1774970988, now seen corresponding path program 331 times [2021-08-21 11:56:07,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:07,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35199504] [2021-08-21 11:56:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:07,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:08,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:08,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35199504] [2021-08-21 11:56:08,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35199504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:08,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:08,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:08,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64264286] [2021-08-21 11:56:08,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:08,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:08,277 INFO L87 Difference]: Start difference. First operand 5126 states and 13726 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:09,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:09,707 INFO L93 Difference]: Finished difference Result 8892 states and 23278 transitions. [2021-08-21 11:56:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:09,707 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:09,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:09,720 INFO L225 Difference]: With dead ends: 8892 [2021-08-21 11:56:09,721 INFO L226 Difference]: Without dead ends: 8892 [2021-08-21 11:56:09,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1261.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2021-08-21 11:56:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 5062. [2021-08-21 11:56:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5060 states have (on average 2.676284584980237) internal successors, (13542), 5061 states have internal predecessors, (13542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 13542 transitions. [2021-08-21 11:56:09,811 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 13542 transitions. Word has length 114 [2021-08-21 11:56:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:09,812 INFO L470 AbstractCegarLoop]: Abstraction has 5062 states and 13542 transitions. [2021-08-21 11:56:09,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:09,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 13542 transitions. [2021-08-21 11:56:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:09,817 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:09,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:09,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-08-21 11:56:09,818 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:09,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1460601706, now seen corresponding path program 332 times [2021-08-21 11:56:09,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:09,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24206546] [2021-08-21 11:56:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:09,818 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:10,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:10,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24206546] [2021-08-21 11:56:10,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24206546] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:10,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:10,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:10,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347850358] [2021-08-21 11:56:10,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:10,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:10,205 INFO L87 Difference]: Start difference. First operand 5062 states and 13542 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:11,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:11,600 INFO L93 Difference]: Finished difference Result 6546 states and 17135 transitions. [2021-08-21 11:56:11,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:11,601 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:11,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:11,611 INFO L225 Difference]: With dead ends: 6546 [2021-08-21 11:56:11,611 INFO L226 Difference]: Without dead ends: 6546 [2021-08-21 11:56:11,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1226.1ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6546 states. [2021-08-21 11:56:11,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6546 to 4974. [2021-08-21 11:56:11,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4974 states, 4972 states have (on average 2.6721641190667738) internal successors, (13286), 4973 states have internal predecessors, (13286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4974 states to 4974 states and 13286 transitions. [2021-08-21 11:56:11,716 INFO L78 Accepts]: Start accepts. Automaton has 4974 states and 13286 transitions. Word has length 114 [2021-08-21 11:56:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:11,716 INFO L470 AbstractCegarLoop]: Abstraction has 4974 states and 13286 transitions. [2021-08-21 11:56:11,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4974 states and 13286 transitions. [2021-08-21 11:56:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:11,722 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:11,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:11,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-08-21 11:56:11,722 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:11,723 INFO L82 PathProgramCache]: Analyzing trace with hash 221481608, now seen corresponding path program 333 times [2021-08-21 11:56:11,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:11,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600779204] [2021-08-21 11:56:11,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:11,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:12,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:12,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600779204] [2021-08-21 11:56:12,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600779204] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:12,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:12,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:12,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959027354] [2021-08-21 11:56:12,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:12,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:12,108 INFO L87 Difference]: Start difference. First operand 4974 states and 13286 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:13,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:13,468 INFO L93 Difference]: Finished difference Result 7319 states and 18867 transitions. [2021-08-21 11:56:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-21 11:56:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-21 11:56:13,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:13,480 INFO L225 Difference]: With dead ends: 7319 [2021-08-21 11:56:13,480 INFO L226 Difference]: Without dead ends: 7319 [2021-08-21 11:56:13,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1225.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-21 11:56:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2021-08-21 11:56:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 4958. [2021-08-21 11:56:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4958 states, 4956 states have (on average 2.671509281678773) internal successors, (13240), 4957 states have internal predecessors, (13240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:13,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4958 states to 4958 states and 13240 transitions. [2021-08-21 11:56:13,557 INFO L78 Accepts]: Start accepts. Automaton has 4958 states and 13240 transitions. Word has length 114 [2021-08-21 11:56:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:13,558 INFO L470 AbstractCegarLoop]: Abstraction has 4958 states and 13240 transitions. [2021-08-21 11:56:13,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 4958 states and 13240 transitions. [2021-08-21 11:56:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-21 11:56:13,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:13,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:13,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-08-21 11:56:13,563 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-08-21 11:56:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:13,563 INFO L82 PathProgramCache]: Analyzing trace with hash -988859988, now seen corresponding path program 334 times [2021-08-21 11:56:13,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:13,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225250612] [2021-08-21 11:56:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:13,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:13,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:13,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225250612] [2021-08-21 11:56:13,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225250612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:13,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:13,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-21 11:56:13,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141216741] [2021-08-21 11:56:13,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 11:56:13,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:13,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 11:56:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-21 11:56:13,991 INFO L87 Difference]: Start difference. First operand 4958 states and 13240 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-08-21 11:56:14,723 WARN L223 SmtUtils]: Removed 2 from assertion stack [2021-08-21 11:56:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-21 11:56:14,724 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-08-21 11:56:14,724 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. [2021-08-21 11:56:14,725 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,725 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,725 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:14,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:56:14,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:56:14,730 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:56:14,731 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:56:14,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:56:14 BasicIcfg [2021-08-21 11:56:14,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:56:14,734 INFO L168 Benchmark]: Toolchain (without parser) took 703313.86 ms. Allocated memory was 188.7 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 150.4 MB in the beginning and 945.8 MB in the end (delta: -795.4 MB). Peak memory consumption was 353.5 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,734 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 188.7 MB. Free memory was 170.7 MB in the beginning and 170.5 MB in the end (delta: 139.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:56:14,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 830.38 ms. Allocated memory is still 188.7 MB. Free memory was 150.1 MB in the beginning and 125.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.44 ms. Allocated memory is still 188.7 MB. Free memory was 125.8 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,735 INFO L168 Benchmark]: Boogie Preprocessor took 52.32 ms. Allocated memory is still 188.7 MB. Free memory was 122.6 MB in the beginning and 120.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,736 INFO L168 Benchmark]: RCFGBuilder took 710.28 ms. Allocated memory is still 188.7 MB. Free memory was 120.0 MB in the beginning and 71.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,736 INFO L168 Benchmark]: TraceAbstraction took 701631.31 ms. Allocated memory was 188.7 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 71.3 MB in the beginning and 945.8 MB in the end (delta: -874.6 MB). Peak memory consumption was 274.7 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:14,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 188.7 MB. Free memory was 170.7 MB in the beginning and 170.5 MB in the end (delta: 139.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 830.38 ms. Allocated memory is still 188.7 MB. Free memory was 150.1 MB in the beginning and 125.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.44 ms. Allocated memory is still 188.7 MB. Free memory was 125.8 MB in the beginning and 122.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.32 ms. Allocated memory is still 188.7 MB. Free memory was 122.6 MB in the beginning and 120.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.28 ms. Allocated memory is still 188.7 MB. Free memory was 120.0 MB in the beginning and 71.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 701631.31 ms. Allocated memory was 188.7 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 71.3 MB in the beginning and 945.8 MB in the end (delta: -874.6 MB). Peak memory consumption was 274.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1727]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - TimeoutResultAtElement [Line: 1726]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4958states) and FLOYD_HOARE automaton (currently 13 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 56 for 61ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 178 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 701441.4ms, OverallIterations: 339, TraceHistogramMax: 1, EmptinessCheckTime: 2476.0ms, AutomataDifference: 503748.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 253.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 127756 SDtfs, 386162 SDslu, 693708 SDs, 0 SdLazy, 178154 SolverSat, 1937 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94512.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12120 GetRequests, 1990 SyntacticMatches, 14 SemanticMatches, 10115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19684 ImplicationChecksByTransitivity, 420699.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9274occurred in iteration=0, InterpolantAutomatonStates: 5766, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48809.5ms AutomataMinimizationTime, 338 MinimizatonAttempts, 3112668 StatesRemovedByMinimization, 337 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 581.1ms SsaConstructionTime, 4107.1ms SatisfiabilityAnalysisTime, 137522.8ms InterpolantComputationTime, 38360 NumberOfCodeBlocks, 38360 NumberOfCodeBlocksAsserted, 339 NumberOfCheckSat, 38021 ConstructedInterpolants, 0 QuantifiedInterpolants, 240292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 339 InterpolantComputations, 339 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown