/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 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 13:52:41,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 13:52:41,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 13:52:41,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 13:52:41,519 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 [2021-08-06 13:52:41,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 13:52:41,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 13:52:41,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-06 13:52:41,553 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-06 13:52:41,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 13:52:41,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 13:52:41,557 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 13:52:41,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 13:52:41,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 13:52:41,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 13:52:41,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 13:52:41,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 13:52:41,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 13:52:41,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 13:52:41,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 13:52:41,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 13:52:41,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 13:52:41,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 13:52:41,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 13:52:41,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 13:52:41,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 13:52:41,560 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 13:52:41,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 13:52:41,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:41,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 13:52:41,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 13:52:41,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 13:52:41,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 13:52:41,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 13:52:41,561 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 13:52:41,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 13:52:41,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 13:52:41,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 13:52:41,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 13:52:41,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 13:52:41,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-06 13:52:41,927 INFO L275 PluginConnector]: CDTParser initialized [2021-08-06 13:52:41,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2021-08-06 13:52:42,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e031f1295/df69c0f451a74f38848a19b95ce8f396/FLAG8d423b544 [2021-08-06 13:52:42,585 INFO L306 CDTParser]: Found 1 translation units. [2021-08-06 13:52:42,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2021-08-06 13:52:42,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e031f1295/df69c0f451a74f38848a19b95ce8f396/FLAG8d423b544 [2021-08-06 13:52:42,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e031f1295/df69c0f451a74f38848a19b95ce8f396 [2021-08-06 13:52:42,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 13:52:42,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-06 13:52:42,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:42,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-06 13:52:42,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-06 13:52:42,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:42" (1/1) ... [2021-08-06 13:52:42,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eda8bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:42, skipping insertion in model container [2021-08-06 13:52:42,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.08 01:52:42" (1/1) ... [2021-08-06 13:52:42,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-06 13:52:42,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-06 13:52:43,469 WARN L224 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] [2021-08-06 13:52:43,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:43,500 INFO L203 MainTranslator]: Completed pre-run [2021-08-06 13:52:43,572 WARN L224 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] [2021-08-06 13:52:43,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-06 13:52:43,693 INFO L208 MainTranslator]: Completed translation [2021-08-06 13:52:43,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43 WrapperNode [2021-08-06 13:52:43,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-06 13:52:43,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:43,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 13:52:43,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 13:52:43,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 13:52:43,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 13:52:43,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 13:52:43,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 13:52:43,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 13:52:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 13:52:43,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 13:52:43,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 13:52:43,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (1/1) ... [2021-08-06 13:52:43,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 13:52:43,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 13:52:43,859 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) [2021-08-06 13:52:43,865 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 [2021-08-06 13:52:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-06 13:52:43,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 13:52:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-08-06 13:52:43,900 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-06 13:52:43,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-06 13:52:43,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-06 13:52:43,902 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 13:52:44,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 13:52:44,454 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-08-06 13:52:44,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:44 BoogieIcfgContainer [2021-08-06 13:52:44,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 13:52:44,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 13:52:44,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 13:52:44,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 13:52:44,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.08 01:52:42" (1/3) ... [2021-08-06 13:52:44,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5be8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:44, skipping insertion in model container [2021-08-06 13:52:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.08 01:52:43" (2/3) ... [2021-08-06 13:52:44,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d5be8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 01:52:44, skipping insertion in model container [2021-08-06 13:52:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 01:52:44" (3/3) ... [2021-08-06 13:52:44,463 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2021-08-06 13:52:44,468 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 13:52:44,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 13:52:44,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-06 13:52:44,469 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 13:52:44,518 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,518 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,519 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,520 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,521 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,522 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,523 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,524 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,525 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,526 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,527 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,528 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,529 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,530 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,531 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,532 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,533 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,534 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,535 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,536 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,537 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,538 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,541 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,542 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,542 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,542 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,542 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,542 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,543 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,548 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,549 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,550 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,550 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,550 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,550 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-06 13:52:44,562 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-06 13:52:44,599 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 13:52:44,620 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 [2021-08-06 13:52:44,620 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-06 13:52:44,633 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 167 places, 171 transitions, 364 flow [2021-08-06 13:52:44,879 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9349 states, 9339 states have (on average 2.8488060820216297) internal successors, (26605), 9348 states have internal predecessors, (26605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 9349 states, 9339 states have (on average 2.8488060820216297) internal successors, (26605), 9348 states have internal predecessors, (26605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-06 13:52:44,931 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:44,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:44,933 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)] === [2021-08-06 13:52:44,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -988927327, now seen corresponding path program 1 times [2021-08-06 13:52:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:44,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153542506] [2021-08-06 13:52:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:44,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:45,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:45,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153542506] [2021-08-06 13:52:45,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153542506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:45,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:45,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:45,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323613949] [2021-08-06 13:52:45,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:45,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:45,537 INFO L87 Difference]: Start difference. First operand has 9349 states, 9339 states have (on average 2.8488060820216297) internal successors, (26605), 9348 states have internal predecessors, (26605), 0 states have call successors, (0), 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) [2021-08-06 13:52:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:45,979 INFO L93 Difference]: Finished difference Result 8893 states and 24854 transitions. [2021-08-06 13:52:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 13:52:45,983 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 [2021-08-06 13:52:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:46,053 INFO L225 Difference]: With dead ends: 8893 [2021-08-06 13:52:46,053 INFO L226 Difference]: Without dead ends: 7312 [2021-08-06 13:52:46,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 153.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 13:52:46,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2021-08-06 13:52:46,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 7311. [2021-08-06 13:52:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 7304 states have (on average 2.7836801752464404) internal successors, (20332), 7310 states have internal predecessors, (20332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 20332 transitions. [2021-08-06 13:52:46,426 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 20332 transitions. Word has length 36 [2021-08-06 13:52:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:46,427 INFO L470 AbstractCegarLoop]: Abstraction has 7311 states and 20332 transitions. [2021-08-06 13:52:46,428 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) [2021-08-06 13:52:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 20332 transitions. [2021-08-06 13:52:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-06 13:52:46,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:46,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:46,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 13:52:46,430 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)] === [2021-08-06 13:52:46,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:46,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1449842663, now seen corresponding path program 1 times [2021-08-06 13:52:46,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:46,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327750544] [2021-08-06 13:52:46,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:46,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:46,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:46,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327750544] [2021-08-06 13:52:46,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327750544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:46,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:46,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:46,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242811246] [2021-08-06 13:52:46,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:46,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:46,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:46,609 INFO L87 Difference]: Start difference. First operand 7311 states and 20332 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) [2021-08-06 13:52:46,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:46,925 INFO L93 Difference]: Finished difference Result 7313 states and 20334 transitions. [2021-08-06 13:52:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 13:52:46,925 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 [2021-08-06 13:52:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:46,966 INFO L225 Difference]: With dead ends: 7313 [2021-08-06 13:52:46,966 INFO L226 Difference]: Without dead ends: 7313 [2021-08-06 13:52:46,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-06 13:52:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7313 states. [2021-08-06 13:52:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7313 to 7309. [2021-08-06 13:52:47,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7309 states, 7303 states have (on average 2.7837874845953716) internal successors, (20330), 7308 states have internal predecessors, (20330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7309 states to 7309 states and 20330 transitions. [2021-08-06 13:52:47,235 INFO L78 Accepts]: Start accepts. Automaton has 7309 states and 20330 transitions. Word has length 42 [2021-08-06 13:52:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:47,236 INFO L470 AbstractCegarLoop]: Abstraction has 7309 states and 20330 transitions. [2021-08-06 13:52:47,236 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) [2021-08-06 13:52:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 7309 states and 20330 transitions. [2021-08-06 13:52:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-06 13:52:47,240 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:47,240 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:47,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 13:52:47,241 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)] === [2021-08-06 13:52:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:47,249 INFO L82 PathProgramCache]: Analyzing trace with hash 53531805, now seen corresponding path program 1 times [2021-08-06 13:52:47,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:47,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965041451] [2021-08-06 13:52:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:47,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:47,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:47,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:47,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965041451] [2021-08-06 13:52:47,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965041451] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:47,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:47,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:47,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221979358] [2021-08-06 13:52:47,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:47,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:47,451 INFO L87 Difference]: Start difference. First operand 7309 states and 20330 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) [2021-08-06 13:52:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:47,907 INFO L93 Difference]: Finished difference Result 10560 states and 29296 transitions. [2021-08-06 13:52:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 13:52:47,907 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 [2021-08-06 13:52:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:47,953 INFO L225 Difference]: With dead ends: 10560 [2021-08-06 13:52:47,953 INFO L226 Difference]: Without dead ends: 10560 [2021-08-06 13:52:47,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 110.4ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-06 13:52:47,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10560 states. [2021-08-06 13:52:48,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10560 to 8145. [2021-08-06 13:52:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8145 states, 8140 states have (on average 2.784029484029484) internal successors, (22662), 8144 states have internal predecessors, (22662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8145 states to 8145 states and 22662 transitions. [2021-08-06 13:52:48,307 INFO L78 Accepts]: Start accepts. Automaton has 8145 states and 22662 transitions. Word has length 60 [2021-08-06 13:52:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:48,308 INFO L470 AbstractCegarLoop]: Abstraction has 8145 states and 22662 transitions. [2021-08-06 13:52:48,308 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) [2021-08-06 13:52:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8145 states and 22662 transitions. [2021-08-06 13:52:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-06 13:52:48,311 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:48,312 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] [2021-08-06 13:52:48,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 13:52:48,312 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)] === [2021-08-06 13:52:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:48,313 INFO L82 PathProgramCache]: Analyzing trace with hash 143085669, now seen corresponding path program 1 times [2021-08-06 13:52:48,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:48,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948914146] [2021-08-06 13:52:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:48,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:48,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:48,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948914146] [2021-08-06 13:52:48,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948914146] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:48,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:48,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 13:52:48,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693296407] [2021-08-06 13:52:48,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 13:52:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 13:52:48,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-06 13:52:48,440 INFO L87 Difference]: Start difference. First operand 8145 states and 22662 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) [2021-08-06 13:52:48,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:48,737 INFO L93 Difference]: Finished difference Result 11396 states and 31467 transitions. [2021-08-06 13:52:48,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 13:52:48,737 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 [2021-08-06 13:52:48,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:48,773 INFO L225 Difference]: With dead ends: 11396 [2021-08-06 13:52:48,773 INFO L226 Difference]: Without dead ends: 9607 [2021-08-06 13:52:48,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-06 13:52:48,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2021-08-06 13:52:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9285. [2021-08-06 13:52:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 9281 states have (on average 2.7852602090291994) internal successors, (25850), 9284 states have internal predecessors, (25850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 25850 transitions. [2021-08-06 13:52:49,124 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 25850 transitions. Word has length 66 [2021-08-06 13:52:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:49,124 INFO L470 AbstractCegarLoop]: Abstraction has 9285 states and 25850 transitions. [2021-08-06 13:52:49,124 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) [2021-08-06 13:52:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 25850 transitions. [2021-08-06 13:52:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-06 13:52:49,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:49,139 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] [2021-08-06 13:52:49,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 13:52:49,140 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)] === [2021-08-06 13:52:49,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:49,141 INFO L82 PathProgramCache]: Analyzing trace with hash -463030957, now seen corresponding path program 1 times [2021-08-06 13:52:49,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:49,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60615014] [2021-08-06 13:52:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:49,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:49,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:49,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:49,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60615014] [2021-08-06 13:52:49,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60615014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:49,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:49,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 13:52:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130953294] [2021-08-06 13:52:49,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 13:52:49,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 13:52:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-06 13:52:49,370 INFO L87 Difference]: Start difference. First operand 9285 states and 25850 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) [2021-08-06 13:52:49,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:49,420 INFO L93 Difference]: Finished difference Result 3460 states and 9340 transitions. [2021-08-06 13:52:49,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 13:52:49,421 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 [2021-08-06 13:52:49,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:49,431 INFO L225 Difference]: With dead ends: 3460 [2021-08-06 13:52:49,431 INFO L226 Difference]: Without dead ends: 3460 [2021-08-06 13:52:49,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-06 13:52:49,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-08-06 13:52:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3460. [2021-08-06 13:52:49,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3460 states, 3458 states have (on average 2.700983227299017) internal successors, (9340), 3459 states have internal predecessors, (9340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3460 states to 3460 states and 9340 transitions. [2021-08-06 13:52:49,532 INFO L78 Accepts]: Start accepts. Automaton has 3460 states and 9340 transitions. Word has length 80 [2021-08-06 13:52:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 3460 states and 9340 transitions. [2021-08-06 13:52:49,533 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) [2021-08-06 13:52:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3460 states and 9340 transitions. [2021-08-06 13:52:49,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:52:49,545 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:49,545 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] [2021-08-06 13:52:49,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 13:52:49,546 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)] === [2021-08-06 13:52:49,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:49,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1571535378, now seen corresponding path program 1 times [2021-08-06 13:52:49,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:49,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009709938] [2021-08-06 13:52:49,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:49,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:51,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:51,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:51,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009709938] [2021-08-06 13:52:51,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009709938] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:51,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:51,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-08-06 13:52:51,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590547368] [2021-08-06 13:52:51,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-08-06 13:52:51,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-08-06 13:52:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-08-06 13:52:51,478 INFO L87 Difference]: Start difference. First operand 3460 states and 9340 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:55,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:55,654 INFO L93 Difference]: Finished difference Result 5735 states and 15457 transitions. [2021-08-06 13:52:55,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-06 13:52:55,656 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:52:55,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:55,672 INFO L225 Difference]: With dead ends: 5735 [2021-08-06 13:52:55,672 INFO L226 Difference]: Without dead ends: 5685 [2021-08-06 13:52:55,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 2834.7ms TimeCoverageRelationStatistics Valid=793, Invalid=3239, Unknown=0, NotChecked=0, Total=4032 [2021-08-06 13:52:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2021-08-06 13:52:55,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 5590. [2021-08-06 13:52:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5588 states have (on average 2.7222619899785254) internal successors, (15212), 5589 states have internal predecessors, (15212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 15212 transitions. [2021-08-06 13:52:55,809 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 15212 transitions. Word has length 114 [2021-08-06 13:52:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:55,810 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 15212 transitions. [2021-08-06 13:52:55,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 15212 transitions. [2021-08-06 13:52:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:52:55,826 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:55,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:55,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 13:52:55,826 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)] === [2021-08-06 13:52:55,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:55,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1499204940, now seen corresponding path program 1 times [2021-08-06 13:52:55,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:55,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174623578] [2021-08-06 13:52:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:55,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:56,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:56,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174623578] [2021-08-06 13:52:56,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174623578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:56,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:56,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-08-06 13:52:56,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882677869] [2021-08-06 13:52:56,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-06 13:52:56,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-06 13:52:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-08-06 13:52:56,769 INFO L87 Difference]: Start difference. First operand 5590 states and 15212 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) [2021-08-06 13:52:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:52:58,805 INFO L93 Difference]: Finished difference Result 7132 states and 19364 transitions. [2021-08-06 13:52:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 13:52:58,806 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 [2021-08-06 13:52:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:52:58,827 INFO L225 Difference]: With dead ends: 7132 [2021-08-06 13:52:58,827 INFO L226 Difference]: Without dead ends: 7132 [2021-08-06 13:52:58,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1586.3ms TimeCoverageRelationStatistics Valid=398, Invalid=1324, Unknown=0, NotChecked=0, Total=1722 [2021-08-06 13:52:58,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2021-08-06 13:52:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 6598. [2021-08-06 13:52:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6598 states, 6596 states have (on average 2.7283201940570043) internal successors, (17996), 6597 states have internal predecessors, (17996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:52:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6598 states to 6598 states and 17996 transitions. [2021-08-06 13:52:59,025 INFO L78 Accepts]: Start accepts. Automaton has 6598 states and 17996 transitions. Word has length 114 [2021-08-06 13:52:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:52:59,025 INFO L470 AbstractCegarLoop]: Abstraction has 6598 states and 17996 transitions. [2021-08-06 13:52:59,026 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) [2021-08-06 13:52:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 6598 states and 17996 transitions. [2021-08-06 13:52:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:52:59,044 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:52:59,044 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:52:59,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 13:52:59,044 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)] === [2021-08-06 13:52:59,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:52:59,045 INFO L82 PathProgramCache]: Analyzing trace with hash 191855392, now seen corresponding path program 2 times [2021-08-06 13:52:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:52:59,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705051660] [2021-08-06 13:52:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:52:59,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:52:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:52:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:52:59,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:52:59,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705051660] [2021-08-06 13:52:59,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705051660] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:52:59,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:52:59,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:52:59,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166593339] [2021-08-06 13:52:59,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:52:59,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:52:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:52:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:52:59,844 INFO L87 Difference]: Start difference. First operand 6598 states and 17996 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) [2021-08-06 13:53:01,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:01,150 INFO L93 Difference]: Finished difference Result 8097 states and 21651 transitions. [2021-08-06 13:53:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:53:01,154 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 [2021-08-06 13:53:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:01,176 INFO L225 Difference]: With dead ends: 8097 [2021-08-06 13:53:01,177 INFO L226 Difference]: Without dead ends: 8097 [2021-08-06 13:53:01,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1121.2ms TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8097 states. [2021-08-06 13:53:01,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8097 to 7648. [2021-08-06 13:53:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7646 states have (on average 2.7019356526288254) internal successors, (20659), 7647 states have internal predecessors, (20659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 20659 transitions. [2021-08-06 13:53:01,369 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 20659 transitions. Word has length 114 [2021-08-06 13:53:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:01,369 INFO L470 AbstractCegarLoop]: Abstraction has 7648 states and 20659 transitions. [2021-08-06 13:53:01,369 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) [2021-08-06 13:53:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 20659 transitions. [2021-08-06 13:53:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:01,391 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:01,392 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] [2021-08-06 13:53:01,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 13:53:01,392 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)] === [2021-08-06 13:53:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:01,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1201366320, now seen corresponding path program 3 times [2021-08-06 13:53:01,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:01,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905611454] [2021-08-06 13:53:01,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:01,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:02,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:02,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:02,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905611454] [2021-08-06 13:53:02,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905611454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:02,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:02,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:02,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078162876] [2021-08-06 13:53:02,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:02,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:02,152 INFO L87 Difference]: Start difference. First operand 7648 states and 20659 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) [2021-08-06 13:53:03,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:03,485 INFO L93 Difference]: Finished difference Result 8716 states and 22954 transitions. [2021-08-06 13:53:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:03,486 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 [2021-08-06 13:53:03,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:03,504 INFO L225 Difference]: With dead ends: 8716 [2021-08-06 13:53:03,504 INFO L226 Difference]: Without dead ends: 8716 [2021-08-06 13:53:03,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1098.2ms TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:03,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8716 states. [2021-08-06 13:53:03,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8716 to 7837. [2021-08-06 13:53:03,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7837 states, 7835 states have (on average 2.69189534141672) internal successors, (21091), 7836 states have internal predecessors, (21091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:03,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 21091 transitions. [2021-08-06 13:53:03,717 INFO L78 Accepts]: Start accepts. Automaton has 7837 states and 21091 transitions. Word has length 114 [2021-08-06 13:53:03,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:03,717 INFO L470 AbstractCegarLoop]: Abstraction has 7837 states and 21091 transitions. [2021-08-06 13:53:03,717 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) [2021-08-06 13:53:03,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7837 states and 21091 transitions. [2021-08-06 13:53:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:03,735 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:03,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:03,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 13:53:03,735 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)] === [2021-08-06 13:53:03,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:03,736 INFO L82 PathProgramCache]: Analyzing trace with hash -472806764, now seen corresponding path program 4 times [2021-08-06 13:53:03,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:03,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367761301] [2021-08-06 13:53:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:03,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:04,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:04,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367761301] [2021-08-06 13:53:04,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367761301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:04,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:04,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:04,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039376688] [2021-08-06 13:53:04,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:04,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:04,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:04,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:04,371 INFO L87 Difference]: Start difference. First operand 7837 states and 21091 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) [2021-08-06 13:53:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:05,649 INFO L93 Difference]: Finished difference Result 9268 states and 24209 transitions. [2021-08-06 13:53:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:05,650 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 [2021-08-06 13:53:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:05,664 INFO L225 Difference]: With dead ends: 9268 [2021-08-06 13:53:05,664 INFO L226 Difference]: Without dead ends: 9268 [2021-08-06 13:53:05,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1062.4ms TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2021-08-06 13:53:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 7916. [2021-08-06 13:53:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7916 states, 7914 states have (on average 2.689284811726055) internal successors, (21283), 7915 states have internal predecessors, (21283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7916 states to 7916 states and 21283 transitions. [2021-08-06 13:53:05,875 INFO L78 Accepts]: Start accepts. Automaton has 7916 states and 21283 transitions. Word has length 114 [2021-08-06 13:53:05,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:05,875 INFO L470 AbstractCegarLoop]: Abstraction has 7916 states and 21283 transitions. [2021-08-06 13:53:05,875 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) [2021-08-06 13:53:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7916 states and 21283 transitions. [2021-08-06 13:53:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:05,892 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:05,893 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:05,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 13:53:05,893 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)] === [2021-08-06 13:53:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2082933298, now seen corresponding path program 5 times [2021-08-06 13:53:05,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:05,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848607373] [2021-08-06 13:53:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:05,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:06,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:06,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848607373] [2021-08-06 13:53:06,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848607373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:06,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:06,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:06,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090707829] [2021-08-06 13:53:06,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:06,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:06,517 INFO L87 Difference]: Start difference. First operand 7916 states and 21283 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) [2021-08-06 13:53:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:07,846 INFO L93 Difference]: Finished difference Result 9505 states and 24785 transitions. [2021-08-06 13:53:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:07,847 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 [2021-08-06 13:53:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:07,864 INFO L225 Difference]: With dead ends: 9505 [2021-08-06 13:53:07,864 INFO L226 Difference]: Without dead ends: 9505 [2021-08-06 13:53:07,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1062.1ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:07,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2021-08-06 13:53:08,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 8074. [2021-08-06 13:53:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8072 states have (on average 2.684217046580773) internal successors, (21667), 8073 states have internal predecessors, (21667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 21667 transitions. [2021-08-06 13:53:08,064 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 21667 transitions. Word has length 114 [2021-08-06 13:53:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:08,065 INFO L470 AbstractCegarLoop]: Abstraction has 8074 states and 21667 transitions. [2021-08-06 13:53:08,065 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) [2021-08-06 13:53:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 21667 transitions. [2021-08-06 13:53:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:08,083 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:08,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:08,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 13:53:08,083 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)] === [2021-08-06 13:53:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash 443226796, now seen corresponding path program 6 times [2021-08-06 13:53:08,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:08,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030855915] [2021-08-06 13:53:08,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:08,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:08,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:08,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030855915] [2021-08-06 13:53:08,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030855915] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:08,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:08,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:08,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55983979] [2021-08-06 13:53:08,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:08,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:08,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:08,721 INFO L87 Difference]: Start difference. First operand 8074 states and 21667 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) [2021-08-06 13:53:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:09,953 INFO L93 Difference]: Finished difference Result 9742 states and 25361 transitions. [2021-08-06 13:53:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:09,968 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 [2021-08-06 13:53:09,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:09,984 INFO L225 Difference]: With dead ends: 9742 [2021-08-06 13:53:09,985 INFO L226 Difference]: Without dead ends: 9742 [2021-08-06 13:53:09,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1007.8ms TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9742 states. [2021-08-06 13:53:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9742 to 8153. [2021-08-06 13:53:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 8151 states have (on average 2.6817568396515763) internal successors, (21859), 8152 states have internal predecessors, (21859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 21859 transitions. [2021-08-06 13:53:10,183 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 21859 transitions. Word has length 114 [2021-08-06 13:53:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:10,183 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 21859 transitions. [2021-08-06 13:53:10,183 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) [2021-08-06 13:53:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 21859 transitions. [2021-08-06 13:53:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:10,201 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:10,201 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] [2021-08-06 13:53:10,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 13:53:10,202 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)] === [2021-08-06 13:53:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash 328466580, now seen corresponding path program 7 times [2021-08-06 13:53:10,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:10,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732465642] [2021-08-06 13:53:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:10,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:10,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:10,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732465642] [2021-08-06 13:53:10,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732465642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:10,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:10,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:10,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595146221] [2021-08-06 13:53:10,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:10,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:10,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:10,889 INFO L87 Difference]: Start difference. First operand 8153 states and 21859 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) [2021-08-06 13:53:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:12,033 INFO L93 Difference]: Finished difference Result 8836 states and 23318 transitions. [2021-08-06 13:53:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-06 13:53:12,033 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 [2021-08-06 13:53:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:12,046 INFO L225 Difference]: With dead ends: 8836 [2021-08-06 13:53:12,047 INFO L226 Difference]: Without dead ends: 8836 [2021-08-06 13:53:12,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1022.8ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8836 states. [2021-08-06 13:53:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 7648. [2021-08-06 13:53:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7648 states, 7646 states have (on average 2.7019356526288254) internal successors, (20659), 7647 states have internal predecessors, (20659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7648 states to 7648 states and 20659 transitions. [2021-08-06 13:53:12,173 INFO L78 Accepts]: Start accepts. Automaton has 7648 states and 20659 transitions. Word has length 114 [2021-08-06 13:53:12,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:12,174 INFO L470 AbstractCegarLoop]: Abstraction has 7648 states and 20659 transitions. [2021-08-06 13:53:12,174 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) [2021-08-06 13:53:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7648 states and 20659 transitions. [2021-08-06 13:53:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:12,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:12,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:12,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 13:53:12,191 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)] === [2021-08-06 13:53:12,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:12,191 INFO L82 PathProgramCache]: Analyzing trace with hash 882211300, now seen corresponding path program 8 times [2021-08-06 13:53:12,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:12,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49751687] [2021-08-06 13:53:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:12,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:12,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:12,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49751687] [2021-08-06 13:53:12,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49751687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:12,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:12,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:12,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994705550] [2021-08-06 13:53:12,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:12,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:12,813 INFO L87 Difference]: Start difference. First operand 7648 states and 20659 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:14,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:14,334 INFO L93 Difference]: Finished difference Result 13227 states and 35869 transitions. [2021-08-06 13:53:14,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:14,334 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:14,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:14,358 INFO L225 Difference]: With dead ends: 13227 [2021-08-06 13:53:14,358 INFO L226 Difference]: Without dead ends: 13227 [2021-08-06 13:53:14,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1277.8ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:14,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13227 states. [2021-08-06 13:53:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13227 to 7704. [2021-08-06 13:53:14,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7702 states have (on average 2.7035834848091405) internal successors, (20823), 7703 states have internal predecessors, (20823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 20823 transitions. [2021-08-06 13:53:14,533 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 20823 transitions. Word has length 114 [2021-08-06 13:53:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:14,533 INFO L470 AbstractCegarLoop]: Abstraction has 7704 states and 20823 transitions. [2021-08-06 13:53:14,534 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) [2021-08-06 13:53:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 20823 transitions. [2021-08-06 13:53:14,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:14,548 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:14,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:14,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 13:53:14,548 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)] === [2021-08-06 13:53:14,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:14,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1953230788, now seen corresponding path program 9 times [2021-08-06 13:53:14,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:14,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872496918] [2021-08-06 13:53:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:14,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:15,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:15,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872496918] [2021-08-06 13:53:15,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872496918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:15,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:15,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:15,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297142217] [2021-08-06 13:53:15,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:15,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:15,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:15,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:15,131 INFO L87 Difference]: Start difference. First operand 7704 states and 20823 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:16,583 INFO L93 Difference]: Finished difference Result 12723 states and 34393 transitions. [2021-08-06 13:53:16,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:16,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:16,602 INFO L225 Difference]: With dead ends: 12723 [2021-08-06 13:53:16,602 INFO L226 Difference]: Without dead ends: 12723 [2021-08-06 13:53:16,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1235.0ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12723 states. [2021-08-06 13:53:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12723 to 7718. [2021-08-06 13:53:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7718 states, 7716 states have (on average 2.7039917055469154) internal successors, (20864), 7717 states have internal predecessors, (20864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7718 states to 7718 states and 20864 transitions. [2021-08-06 13:53:16,761 INFO L78 Accepts]: Start accepts. Automaton has 7718 states and 20864 transitions. Word has length 114 [2021-08-06 13:53:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 7718 states and 20864 transitions. [2021-08-06 13:53:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 7718 states and 20864 transitions. [2021-08-06 13:53:16,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:16,775 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:16,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:16,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 13:53:16,775 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)] === [2021-08-06 13:53:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:16,776 INFO L82 PathProgramCache]: Analyzing trace with hash 714110690, now seen corresponding path program 10 times [2021-08-06 13:53:16,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:16,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447715428] [2021-08-06 13:53:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:16,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:17,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:17,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447715428] [2021-08-06 13:53:17,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447715428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:17,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:17,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:17,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487215862] [2021-08-06 13:53:17,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:17,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:17,343 INFO L87 Difference]: Start difference. First operand 7718 states and 20864 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:18,822 INFO L93 Difference]: Finished difference Result 11689 states and 31007 transitions. [2021-08-06 13:53:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:18,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:18,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:18,845 INFO L225 Difference]: With dead ends: 11689 [2021-08-06 13:53:18,845 INFO L226 Difference]: Without dead ends: 11689 [2021-08-06 13:53:18,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1270.2ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2021-08-06 13:53:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 7816. [2021-08-06 13:53:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7814 states have (on average 2.6853084207832096) internal successors, (20983), 7815 states have internal predecessors, (20983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 20983 transitions. [2021-08-06 13:53:19,007 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 20983 transitions. Word has length 114 [2021-08-06 13:53:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:19,007 INFO L470 AbstractCegarLoop]: Abstraction has 7816 states and 20983 transitions. [2021-08-06 13:53:19,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 20983 transitions. [2021-08-06 13:53:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:19,018 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:19,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:19,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 13:53:19,019 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)] === [2021-08-06 13:53:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:19,019 INFO L82 PathProgramCache]: Analyzing trace with hash 147135066, now seen corresponding path program 11 times [2021-08-06 13:53:19,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:19,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130627818] [2021-08-06 13:53:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:19,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:19,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:19,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130627818] [2021-08-06 13:53:19,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130627818] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:19,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:19,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:19,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937657062] [2021-08-06 13:53:19,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:19,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:19,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:19,638 INFO L87 Difference]: Start difference. First operand 7816 states and 20983 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) [2021-08-06 13:53:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:20,790 INFO L93 Difference]: Finished difference Result 11067 states and 29249 transitions. [2021-08-06 13:53:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-06 13:53:20,791 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 [2021-08-06 13:53:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:20,808 INFO L225 Difference]: With dead ends: 11067 [2021-08-06 13:53:20,808 INFO L226 Difference]: Without dead ends: 11067 [2021-08-06 13:53:20,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 920.6ms TimeCoverageRelationStatistics Valid=329, Invalid=793, Unknown=0, NotChecked=0, Total=1122 [2021-08-06 13:53:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11067 states. [2021-08-06 13:53:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11067 to 8106. [2021-08-06 13:53:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8106 states, 8104 states have (on average 2.6859575518262586) internal successors, (21767), 8105 states have internal predecessors, (21767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8106 states to 8106 states and 21767 transitions. [2021-08-06 13:53:20,946 INFO L78 Accepts]: Start accepts. Automaton has 8106 states and 21767 transitions. Word has length 114 [2021-08-06 13:53:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:20,946 INFO L470 AbstractCegarLoop]: Abstraction has 8106 states and 21767 transitions. [2021-08-06 13:53:20,946 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) [2021-08-06 13:53:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 8106 states and 21767 transitions. [2021-08-06 13:53:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:20,958 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:20,958 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:20,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-06 13:53:20,959 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)] === [2021-08-06 13:53:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:20,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1445295206, now seen corresponding path program 12 times [2021-08-06 13:53:20,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:20,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536435833] [2021-08-06 13:53:20,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:20,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:21,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:21,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536435833] [2021-08-06 13:53:21,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536435833] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:21,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:21,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:53:21,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306383179] [2021-08-06 13:53:21,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:53:21,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:53:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:53:21,565 INFO L87 Difference]: Start difference. First operand 8106 states and 21767 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) [2021-08-06 13:53:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:22,936 INFO L93 Difference]: Finished difference Result 11356 states and 29718 transitions. [2021-08-06 13:53:22,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:53:22,936 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 [2021-08-06 13:53:22,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:22,954 INFO L225 Difference]: With dead ends: 11356 [2021-08-06 13:53:22,955 INFO L226 Difference]: Without dead ends: 11356 [2021-08-06 13:53:22,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1091.5ms TimeCoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:53:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11356 states. [2021-08-06 13:53:23,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11356 to 8211. [2021-08-06 13:53:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8209 states have (on average 2.681934462175661) internal successors, (22016), 8210 states have internal predecessors, (22016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 22016 transitions. [2021-08-06 13:53:23,097 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 22016 transitions. Word has length 114 [2021-08-06 13:53:23,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:23,097 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 22016 transitions. [2021-08-06 13:53:23,097 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) [2021-08-06 13:53:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 22016 transitions. [2021-08-06 13:53:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:23,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:23,110 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] [2021-08-06 13:53:23,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 13:53:23,111 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)] === [2021-08-06 13:53:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:23,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1562022748, now seen corresponding path program 13 times [2021-08-06 13:53:23,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:23,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156365052] [2021-08-06 13:53:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:23,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:23,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:23,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156365052] [2021-08-06 13:53:23,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156365052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:23,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612603103] [2021-08-06 13:53:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:23,672 INFO L87 Difference]: Start difference. First operand 8211 states and 22016 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:25,165 INFO L93 Difference]: Finished difference Result 13044 states and 34836 transitions. [2021-08-06 13:53:25,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:25,166 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 [2021-08-06 13:53:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:25,198 INFO L225 Difference]: With dead ends: 13044 [2021-08-06 13:53:25,198 INFO L226 Difference]: Without dead ends: 13044 [2021-08-06 13:53:25,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1249.1ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:25,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13044 states. [2021-08-06 13:53:25,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13044 to 8211. [2021-08-06 13:53:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8209 states have (on average 2.681934462175661) internal successors, (22016), 8210 states have internal predecessors, (22016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:25,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 22016 transitions. [2021-08-06 13:53:25,392 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 22016 transitions. Word has length 114 [2021-08-06 13:53:25,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:25,392 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 22016 transitions. [2021-08-06 13:53:25,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:25,392 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 22016 transitions. [2021-08-06 13:53:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:25,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:25,406 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:25,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 13:53:25,406 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)] === [2021-08-06 13:53:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1788243746, now seen corresponding path program 14 times [2021-08-06 13:53:25,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:25,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107186019] [2021-08-06 13:53:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:25,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:26,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:26,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107186019] [2021-08-06 13:53:26,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107186019] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:26,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:26,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:26,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442423333] [2021-08-06 13:53:26,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:26,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:26,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:26,004 INFO L87 Difference]: Start difference. First operand 8211 states and 22016 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:27,492 INFO L93 Difference]: Finished difference Result 9488 states and 25099 transitions. [2021-08-06 13:53:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:27,507 INFO L225 Difference]: With dead ends: 9488 [2021-08-06 13:53:27,507 INFO L226 Difference]: Without dead ends: 9488 [2021-08-06 13:53:27,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1309.2ms TimeCoverageRelationStatistics Valid=291, Invalid=701, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9488 states. [2021-08-06 13:53:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9488 to 6573. [2021-08-06 13:53:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6573 states, 6571 states have (on average 2.6492162532339067) internal successors, (17408), 6572 states have internal predecessors, (17408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6573 states to 6573 states and 17408 transitions. [2021-08-06 13:53:27,699 INFO L78 Accepts]: Start accepts. Automaton has 6573 states and 17408 transitions. Word has length 114 [2021-08-06 13:53:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:27,699 INFO L470 AbstractCegarLoop]: Abstraction has 6573 states and 17408 transitions. [2021-08-06 13:53:27,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6573 states and 17408 transitions. [2021-08-06 13:53:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:27,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:27,709 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] [2021-08-06 13:53:27,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 13:53:27,709 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)] === [2021-08-06 13:53:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:27,710 INFO L82 PathProgramCache]: Analyzing trace with hash 193777324, now seen corresponding path program 2 times [2021-08-06 13:53:27,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:27,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035550241] [2021-08-06 13:53:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:27,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:28,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:28,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035550241] [2021-08-06 13:53:28,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035550241] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:28,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:28,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:53:28,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041881169] [2021-08-06 13:53:28,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:53:28,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:28,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:53:28,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:53:28,903 INFO L87 Difference]: Start difference. First operand 6573 states and 17408 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:33,542 INFO L93 Difference]: Finished difference Result 12925 states and 34362 transitions. [2021-08-06 13:53:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-06 13:53:33,543 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:33,565 INFO L225 Difference]: With dead ends: 12925 [2021-08-06 13:53:33,565 INFO L226 Difference]: Without dead ends: 12825 [2021-08-06 13:53:33,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 3089.1ms TimeCoverageRelationStatistics Valid=1166, Invalid=4534, Unknown=0, NotChecked=0, Total=5700 [2021-08-06 13:53:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12825 states. [2021-08-06 13:53:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12825 to 8528. [2021-08-06 13:53:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8528 states, 8526 states have (on average 2.6855500821018063) internal successors, (22897), 8527 states have internal predecessors, (22897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 22897 transitions. [2021-08-06 13:53:33,727 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 22897 transitions. Word has length 114 [2021-08-06 13:53:33,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:33,727 INFO L470 AbstractCegarLoop]: Abstraction has 8528 states and 22897 transitions. [2021-08-06 13:53:33,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 22897 transitions. [2021-08-06 13:53:33,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:33,740 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:33,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:33,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 13:53:33,741 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)] === [2021-08-06 13:53:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1418004302, now seen corresponding path program 15 times [2021-08-06 13:53:33,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:33,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178420730] [2021-08-06 13:53:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:33,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:34,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:34,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:34,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178420730] [2021-08-06 13:53:34,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178420730] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:34,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:34,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:34,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667192970] [2021-08-06 13:53:34,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:34,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:34,266 INFO L87 Difference]: Start difference. First operand 8528 states and 22897 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:35,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:35,875 INFO L93 Difference]: Finished difference Result 18077 states and 48166 transitions. [2021-08-06 13:53:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:35,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:35,910 INFO L225 Difference]: With dead ends: 18077 [2021-08-06 13:53:35,910 INFO L226 Difference]: Without dead ends: 18077 [2021-08-06 13:53:35,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1362.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:35,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18077 states. [2021-08-06 13:53:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18077 to 8648. [2021-08-06 13:53:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8648 states, 8646 states have (on average 2.6885264862364098) internal successors, (23245), 8647 states have internal predecessors, (23245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8648 states to 8648 states and 23245 transitions. [2021-08-06 13:53:36,124 INFO L78 Accepts]: Start accepts. Automaton has 8648 states and 23245 transitions. Word has length 114 [2021-08-06 13:53:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:36,124 INFO L470 AbstractCegarLoop]: Abstraction has 8648 states and 23245 transitions. [2021-08-06 13:53:36,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8648 states and 23245 transitions. [2021-08-06 13:53:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:36,137 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:36,138 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:36,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-06 13:53:36,138 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)] === [2021-08-06 13:53:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:36,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1805943506, now seen corresponding path program 16 times [2021-08-06 13:53:36,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:36,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875538338] [2021-08-06 13:53:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:36,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:36,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:36,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:36,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875538338] [2021-08-06 13:53:36,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875538338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:36,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:36,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:36,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377180945] [2021-08-06 13:53:36,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:36,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:36,651 INFO L87 Difference]: Start difference. First operand 8648 states and 23245 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:38,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:38,139 INFO L93 Difference]: Finished difference Result 20677 states and 54847 transitions. [2021-08-06 13:53:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:38,140 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:38,178 INFO L225 Difference]: With dead ends: 20677 [2021-08-06 13:53:38,178 INFO L226 Difference]: Without dead ends: 20677 [2021-08-06 13:53:38,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1298.9ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:38,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20677 states. [2021-08-06 13:53:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20677 to 8680. [2021-08-06 13:53:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8680 states, 8678 states have (on average 2.689214104632404) internal successors, (23337), 8679 states have internal predecessors, (23337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:38,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 23337 transitions. [2021-08-06 13:53:38,403 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 23337 transitions. Word has length 114 [2021-08-06 13:53:38,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:38,403 INFO L470 AbstractCegarLoop]: Abstraction has 8680 states and 23337 transitions. [2021-08-06 13:53:38,403 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) [2021-08-06 13:53:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 23337 transitions. [2021-08-06 13:53:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:38,416 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:38,416 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] [2021-08-06 13:53:38,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-06 13:53:38,416 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)] === [2021-08-06 13:53:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1249903692, now seen corresponding path program 17 times [2021-08-06 13:53:38,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:38,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031327932] [2021-08-06 13:53:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:38,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:38,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:38,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031327932] [2021-08-06 13:53:38,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031327932] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:38,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:38,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:38,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974295365] [2021-08-06 13:53:38,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:38,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:38,920 INFO L87 Difference]: Start difference. First operand 8680 states and 23337 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:40,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:40,396 INFO L93 Difference]: Finished difference Result 17437 states and 45803 transitions. [2021-08-06 13:53:40,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:40,397 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:40,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:40,426 INFO L225 Difference]: With dead ends: 17437 [2021-08-06 13:53:40,426 INFO L226 Difference]: Without dead ends: 17437 [2021-08-06 13:53:40,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1232.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17437 states. [2021-08-06 13:53:40,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17437 to 8624. [2021-08-06 13:53:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8624 states, 8622 states have (on average 2.683484110415217) internal successors, (23137), 8623 states have internal predecessors, (23137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:40,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8624 states to 8624 states and 23137 transitions. [2021-08-06 13:53:40,637 INFO L78 Accepts]: Start accepts. Automaton has 8624 states and 23137 transitions. Word has length 114 [2021-08-06 13:53:40,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:40,637 INFO L470 AbstractCegarLoop]: Abstraction has 8624 states and 23137 transitions. [2021-08-06 13:53:40,638 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) [2021-08-06 13:53:40,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8624 states and 23137 transitions. [2021-08-06 13:53:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:40,650 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:40,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:40,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 13:53:40,650 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)] === [2021-08-06 13:53:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:40,651 INFO L82 PathProgramCache]: Analyzing trace with hash -894695862, now seen corresponding path program 3 times [2021-08-06 13:53:40,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:40,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378240140] [2021-08-06 13:53:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:40,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:41,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:41,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378240140] [2021-08-06 13:53:41,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378240140] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:41,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:41,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:53:41,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31135020] [2021-08-06 13:53:41,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:53:41,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:53:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:53:41,825 INFO L87 Difference]: Start difference. First operand 8624 states and 23137 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:46,726 INFO L93 Difference]: Finished difference Result 15106 states and 40223 transitions. [2021-08-06 13:53:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-06 13:53:46,727 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:46,755 INFO L225 Difference]: With dead ends: 15106 [2021-08-06 13:53:46,756 INFO L226 Difference]: Without dead ends: 15006 [2021-08-06 13:53:46,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 3276.0ms TimeCoverageRelationStatistics Valid=1277, Invalid=5043, Unknown=0, NotChecked=0, Total=6320 [2021-08-06 13:53:46,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2021-08-06 13:53:46,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 8638. [2021-08-06 13:53:46,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8638 states, 8636 states have (on average 2.6838814265863826) internal successors, (23178), 8637 states have internal predecessors, (23178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 23178 transitions. [2021-08-06 13:53:46,977 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 23178 transitions. Word has length 114 [2021-08-06 13:53:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:46,977 INFO L470 AbstractCegarLoop]: Abstraction has 8638 states and 23178 transitions. [2021-08-06 13:53:46,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 23178 transitions. [2021-08-06 13:53:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:46,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:46,990 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] [2021-08-06 13:53:46,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-06 13:53:46,990 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)] === [2021-08-06 13:53:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:46,990 INFO L82 PathProgramCache]: Analyzing trace with hash 329531116, now seen corresponding path program 18 times [2021-08-06 13:53:46,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:46,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086275016] [2021-08-06 13:53:46,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:46,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:47,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:47,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086275016] [2021-08-06 13:53:47,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086275016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:47,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:47,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:47,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043139632] [2021-08-06 13:53:47,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:47,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:47,483 INFO L87 Difference]: Start difference. First operand 8638 states and 23178 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:49,023 INFO L93 Difference]: Finished difference Result 17361 states and 46105 transitions. [2021-08-06 13:53:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:49,054 INFO L225 Difference]: With dead ends: 17361 [2021-08-06 13:53:49,054 INFO L226 Difference]: Without dead ends: 17361 [2021-08-06 13:53:49,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1317.8ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17361 states. [2021-08-06 13:53:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17361 to 8684. [2021-08-06 13:53:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8684 states, 8682 states have (on average 2.6849804192582356) internal successors, (23311), 8683 states have internal predecessors, (23311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 23311 transitions. [2021-08-06 13:53:49,249 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 23311 transitions. Word has length 114 [2021-08-06 13:53:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:49,249 INFO L470 AbstractCegarLoop]: Abstraction has 8684 states and 23311 transitions. [2021-08-06 13:53:49,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 23311 transitions. [2021-08-06 13:53:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:49,261 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:49,261 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] [2021-08-06 13:53:49,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-06 13:53:49,262 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)] === [2021-08-06 13:53:49,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:49,262 INFO L82 PathProgramCache]: Analyzing trace with hash -909588982, now seen corresponding path program 19 times [2021-08-06 13:53:49,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:49,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696189393] [2021-08-06 13:53:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:49,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:49,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:49,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696189393] [2021-08-06 13:53:49,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696189393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:49,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:49,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:49,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45153172] [2021-08-06 13:53:49,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:49,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:49,824 INFO L87 Difference]: Start difference. First operand 8684 states and 23311 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:51,326 INFO L93 Difference]: Finished difference Result 16762 states and 43873 transitions. [2021-08-06 13:53:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:53:51,326 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 [2021-08-06 13:53:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:51,353 INFO L225 Difference]: With dead ends: 16762 [2021-08-06 13:53:51,353 INFO L226 Difference]: Without dead ends: 16762 [2021-08-06 13:53:51,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1297.8ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:53:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16762 states. [2021-08-06 13:53:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16762 to 8652. [2021-08-06 13:53:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8652 states, 8650 states have (on average 2.684277456647399) internal successors, (23219), 8651 states have internal predecessors, (23219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 23219 transitions. [2021-08-06 13:53:51,543 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 23219 transitions. Word has length 114 [2021-08-06 13:53:51,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:51,543 INFO L470 AbstractCegarLoop]: Abstraction has 8652 states and 23219 transitions. [2021-08-06 13:53:51,544 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) [2021-08-06 13:53:51,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 23219 transitions. [2021-08-06 13:53:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:51,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:51,555 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] [2021-08-06 13:53:51,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-06 13:53:51,556 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)] === [2021-08-06 13:53:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:51,556 INFO L82 PathProgramCache]: Analyzing trace with hash 950809740, now seen corresponding path program 4 times [2021-08-06 13:53:51,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:51,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242780106] [2021-08-06 13:53:51,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:51,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:52,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:52,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242780106] [2021-08-06 13:53:52,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242780106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:52,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:52,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:53:52,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847846642] [2021-08-06 13:53:52,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:53:52,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:52,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:53:52,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:53:52,772 INFO L87 Difference]: Start difference. First operand 8652 states and 23219 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:53:58,121 INFO L93 Difference]: Finished difference Result 15382 states and 40634 transitions. [2021-08-06 13:53:58,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-06 13:53:58,122 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:53:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:53:58,147 INFO L225 Difference]: With dead ends: 15382 [2021-08-06 13:53:58,147 INFO L226 Difference]: Without dead ends: 15252 [2021-08-06 13:53:58,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 3494.2ms TimeCoverageRelationStatistics Valid=1392, Invalid=5580, Unknown=0, NotChecked=0, Total=6972 [2021-08-06 13:53:58,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15252 states. [2021-08-06 13:53:58,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15252 to 9109. [2021-08-06 13:53:58,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9109 states, 9107 states have (on average 2.678818491270451) internal successors, (24396), 9108 states have internal predecessors, (24396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9109 states to 9109 states and 24396 transitions. [2021-08-06 13:53:58,349 INFO L78 Accepts]: Start accepts. Automaton has 9109 states and 24396 transitions. Word has length 114 [2021-08-06 13:53:58,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:53:58,349 INFO L470 AbstractCegarLoop]: Abstraction has 9109 states and 24396 transitions. [2021-08-06 13:53:58,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:53:58,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9109 states and 24396 transitions. [2021-08-06 13:53:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:53:58,362 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:53:58,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:53:58,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-06 13:53:58,362 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)] === [2021-08-06 13:53:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:53:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2119930578, now seen corresponding path program 20 times [2021-08-06 13:53:58,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:53:58,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364267332] [2021-08-06 13:53:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:53:58,363 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:53:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:53:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:53:58,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:53:58,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364267332] [2021-08-06 13:53:58,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364267332] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:53:58,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:53:58,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:53:58,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898716079] [2021-08-06 13:53:58,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:53:58,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:53:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:53:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:53:58,827 INFO L87 Difference]: Start difference. First operand 9109 states and 24396 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:00,331 INFO L93 Difference]: Finished difference Result 18071 states and 47671 transitions. [2021-08-06 13:54:00,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:00,332 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 [2021-08-06 13:54:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:00,365 INFO L225 Difference]: With dead ends: 18071 [2021-08-06 13:54:00,366 INFO L226 Difference]: Without dead ends: 18071 [2021-08-06 13:54:00,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1277.2ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18071 states. [2021-08-06 13:54:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18071 to 9123. [2021-08-06 13:54:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9123 states, 9121 states have (on average 2.6792018419033) internal successors, (24437), 9122 states have internal predecessors, (24437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9123 states to 9123 states and 24437 transitions. [2021-08-06 13:54:00,574 INFO L78 Accepts]: Start accepts. Automaton has 9123 states and 24437 transitions. Word has length 114 [2021-08-06 13:54:00,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:00,574 INFO L470 AbstractCegarLoop]: Abstraction has 9123 states and 24437 transitions. [2021-08-06 13:54:00,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 9123 states and 24437 transitions. [2021-08-06 13:54:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:00,587 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:00,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:00,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-06 13:54:00,587 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)] === [2021-08-06 13:54:00,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:00,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1243018090, now seen corresponding path program 21 times [2021-08-06 13:54:00,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:00,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610039497] [2021-08-06 13:54:00,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:00,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:01,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:01,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610039497] [2021-08-06 13:54:01,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610039497] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:01,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:01,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:01,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376468526] [2021-08-06 13:54:01,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:01,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:01,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:01,053 INFO L87 Difference]: Start difference. First operand 9123 states and 24437 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:02,522 INFO L93 Difference]: Finished difference Result 13040 states and 34637 transitions. [2021-08-06 13:54:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:02,546 INFO L225 Difference]: With dead ends: 13040 [2021-08-06 13:54:02,546 INFO L226 Difference]: Without dead ends: 13040 [2021-08-06 13:54:02,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1233.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13040 states. [2021-08-06 13:54:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13040 to 9207. [2021-08-06 13:54:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9207 states, 9205 states have (on average 2.6814774579033136) internal successors, (24683), 9206 states have internal predecessors, (24683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9207 states to 9207 states and 24683 transitions. [2021-08-06 13:54:02,713 INFO L78 Accepts]: Start accepts. Automaton has 9207 states and 24683 transitions. Word has length 114 [2021-08-06 13:54:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:02,713 INFO L470 AbstractCegarLoop]: Abstraction has 9207 states and 24683 transitions. [2021-08-06 13:54:02,713 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) [2021-08-06 13:54:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 9207 states and 24683 transitions. [2021-08-06 13:54:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:02,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:02,725 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] [2021-08-06 13:54:02,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-06 13:54:02,725 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)] === [2021-08-06 13:54:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:02,725 INFO L82 PathProgramCache]: Analyzing trace with hash -437696030, now seen corresponding path program 22 times [2021-08-06 13:54:02,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:02,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070306403] [2021-08-06 13:54:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:02,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:03,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:03,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070306403] [2021-08-06 13:54:03,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070306403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:03,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:03,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:54:03,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909030169] [2021-08-06 13:54:03,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:54:03,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:54:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:54:03,229 INFO L87 Difference]: Start difference. First operand 9207 states and 24683 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) [2021-08-06 13:54:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:04,463 INFO L93 Difference]: Finished difference Result 10881 states and 28272 transitions. [2021-08-06 13:54:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:54:04,463 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 [2021-08-06 13:54:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:04,479 INFO L225 Difference]: With dead ends: 10881 [2021-08-06 13:54:04,479 INFO L226 Difference]: Without dead ends: 10881 [2021-08-06 13:54:04,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1060.2ms TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:54:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10881 states. [2021-08-06 13:54:04,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10881 to 9112. [2021-08-06 13:54:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9112 states, 9110 states have (on average 2.6861690450054883) internal successors, (24471), 9111 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9112 states to 9112 states and 24471 transitions. [2021-08-06 13:54:04,629 INFO L78 Accepts]: Start accepts. Automaton has 9112 states and 24471 transitions. Word has length 114 [2021-08-06 13:54:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:04,629 INFO L470 AbstractCegarLoop]: Abstraction has 9112 states and 24471 transitions. [2021-08-06 13:54:04,629 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) [2021-08-06 13:54:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 9112 states and 24471 transitions. [2021-08-06 13:54:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:04,642 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:04,642 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] [2021-08-06 13:54:04,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-06 13:54:04,642 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)] === [2021-08-06 13:54:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:04,643 INFO L82 PathProgramCache]: Analyzing trace with hash -128686002, now seen corresponding path program 23 times [2021-08-06 13:54:04,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:04,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733226115] [2021-08-06 13:54:04,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:04,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:05,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:05,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733226115] [2021-08-06 13:54:05,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733226115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:05,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:05,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:05,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967593108] [2021-08-06 13:54:05,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:05,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:05,133 INFO L87 Difference]: Start difference. First operand 9112 states and 24471 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:06,880 INFO L93 Difference]: Finished difference Result 23165 states and 62030 transitions. [2021-08-06 13:54:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:06,880 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 [2021-08-06 13:54:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:06,926 INFO L225 Difference]: With dead ends: 23165 [2021-08-06 13:54:06,927 INFO L226 Difference]: Without dead ends: 23165 [2021-08-06 13:54:06,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1427.3ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23165 states. [2021-08-06 13:54:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23165 to 9196. [2021-08-06 13:54:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 9194 states have (on average 2.688383728518599) internal successors, (24717), 9195 states have internal predecessors, (24717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 24717 transitions. [2021-08-06 13:54:07,207 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 24717 transitions. Word has length 114 [2021-08-06 13:54:07,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:07,207 INFO L470 AbstractCegarLoop]: Abstraction has 9196 states and 24717 transitions. [2021-08-06 13:54:07,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 24717 transitions. [2021-08-06 13:54:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:07,220 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:07,220 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:07,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-06 13:54:07,220 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)] === [2021-08-06 13:54:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash 942333486, now seen corresponding path program 24 times [2021-08-06 13:54:07,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:07,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099020120] [2021-08-06 13:54:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:07,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:07,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:07,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:07,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099020120] [2021-08-06 13:54:07,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099020120] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:07,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:07,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:07,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188246820] [2021-08-06 13:54:07,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:07,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:07,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:07,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:07,696 INFO L87 Difference]: Start difference. First operand 9196 states and 24717 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:09,181 INFO L93 Difference]: Finished difference Result 23333 states and 62354 transitions. [2021-08-06 13:54:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:09,183 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 [2021-08-06 13:54:09,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:09,227 INFO L225 Difference]: With dead ends: 23333 [2021-08-06 13:54:09,227 INFO L226 Difference]: Without dead ends: 23333 [2021-08-06 13:54:09,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1224.5ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23333 states. [2021-08-06 13:54:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23333 to 9224. [2021-08-06 13:54:09,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9224 states, 9222 states have (on average 2.689112990674474) internal successors, (24799), 9223 states have internal predecessors, (24799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9224 states to 9224 states and 24799 transitions. [2021-08-06 13:54:09,538 INFO L78 Accepts]: Start accepts. Automaton has 9224 states and 24799 transitions. Word has length 114 [2021-08-06 13:54:09,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:09,538 INFO L470 AbstractCegarLoop]: Abstraction has 9224 states and 24799 transitions. [2021-08-06 13:54:09,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:09,539 INFO L276 IsEmpty]: Start isEmpty. Operand 9224 states and 24799 transitions. [2021-08-06 13:54:09,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:09,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:09,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-06 13:54:09,552 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)] === [2021-08-06 13:54:09,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:09,552 INFO L82 PathProgramCache]: Analyzing trace with hash -296786612, now seen corresponding path program 25 times [2021-08-06 13:54:09,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:09,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625646513] [2021-08-06 13:54:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:09,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:10,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:10,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:10,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625646513] [2021-08-06 13:54:10,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625646513] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:10,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:10,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:10,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206389461] [2021-08-06 13:54:10,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:10,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:10,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:10,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:10,045 INFO L87 Difference]: Start difference. First operand 9224 states and 24799 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:11,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:11,543 INFO L93 Difference]: Finished difference Result 22187 states and 58640 transitions. [2021-08-06 13:54:11,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:11,587 INFO L225 Difference]: With dead ends: 22187 [2021-08-06 13:54:11,587 INFO L226 Difference]: Without dead ends: 22187 [2021-08-06 13:54:11,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1239.4ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22187 states. [2021-08-06 13:54:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22187 to 9140. [2021-08-06 13:54:11,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9140 states, 9138 states have (on average 2.686911796892099) internal successors, (24553), 9139 states have internal predecessors, (24553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9140 states to 9140 states and 24553 transitions. [2021-08-06 13:54:11,830 INFO L78 Accepts]: Start accepts. Automaton has 9140 states and 24553 transitions. Word has length 114 [2021-08-06 13:54:11,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:11,831 INFO L470 AbstractCegarLoop]: Abstraction has 9140 states and 24553 transitions. [2021-08-06 13:54:11,831 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) [2021-08-06 13:54:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9140 states and 24553 transitions. [2021-08-06 13:54:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:11,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:11,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:11,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-06 13:54:11,844 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)] === [2021-08-06 13:54:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:11,844 INFO L82 PathProgramCache]: Analyzing trace with hash -384167888, now seen corresponding path program 26 times [2021-08-06 13:54:11,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:11,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783834867] [2021-08-06 13:54:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:11,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:12,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:12,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783834867] [2021-08-06 13:54:12,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783834867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:12,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:12,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:12,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004789122] [2021-08-06 13:54:12,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:12,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:12,356 INFO L87 Difference]: Start difference. First operand 9140 states and 24553 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:13,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:13,796 INFO L93 Difference]: Finished difference Result 15836 states and 42025 transitions. [2021-08-06 13:54:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:13,824 INFO L225 Difference]: With dead ends: 15836 [2021-08-06 13:54:13,825 INFO L226 Difference]: Without dead ends: 15836 [2021-08-06 13:54:13,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1207.0ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15836 states. [2021-08-06 13:54:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15836 to 9112. [2021-08-06 13:54:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9112 states, 9110 states have (on average 2.6861690450054883) internal successors, (24471), 9111 states have internal predecessors, (24471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9112 states to 9112 states and 24471 transitions. [2021-08-06 13:54:14,008 INFO L78 Accepts]: Start accepts. Automaton has 9112 states and 24471 transitions. Word has length 114 [2021-08-06 13:54:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:14,009 INFO L470 AbstractCegarLoop]: Abstraction has 9112 states and 24471 transitions. [2021-08-06 13:54:14,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:14,009 INFO L276 IsEmpty]: Start isEmpty. Operand 9112 states and 24471 transitions. [2021-08-06 13:54:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:14,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:14,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:14,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-06 13:54:14,021 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)] === [2021-08-06 13:54:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash -723370514, now seen corresponding path program 27 times [2021-08-06 13:54:14,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:14,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451867903] [2021-08-06 13:54:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:14,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:14,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:14,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451867903] [2021-08-06 13:54:14,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451867903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:14,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:14,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635149073] [2021-08-06 13:54:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:14,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:14,570 INFO L87 Difference]: Start difference. First operand 9112 states and 24471 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:16,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:16,142 INFO L93 Difference]: Finished difference Result 20041 states and 53299 transitions. [2021-08-06 13:54:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:16,142 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 [2021-08-06 13:54:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:16,179 INFO L225 Difference]: With dead ends: 20041 [2021-08-06 13:54:16,179 INFO L226 Difference]: Without dead ends: 20041 [2021-08-06 13:54:16,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1293.3ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20041 states. [2021-08-06 13:54:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20041 to 9168. [2021-08-06 13:54:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9168 states, 9166 states have (on average 2.687650010909884) internal successors, (24635), 9167 states have internal predecessors, (24635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9168 states to 9168 states and 24635 transitions. [2021-08-06 13:54:16,408 INFO L78 Accepts]: Start accepts. Automaton has 9168 states and 24635 transitions. Word has length 114 [2021-08-06 13:54:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:16,408 INFO L470 AbstractCegarLoop]: Abstraction has 9168 states and 24635 transitions. [2021-08-06 13:54:16,408 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) [2021-08-06 13:54:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 9168 states and 24635 transitions. [2021-08-06 13:54:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:16,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:16,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:16,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-06 13:54:16,421 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)] === [2021-08-06 13:54:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:16,422 INFO L82 PathProgramCache]: Analyzing trace with hash 347648974, now seen corresponding path program 28 times [2021-08-06 13:54:16,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:16,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405553721] [2021-08-06 13:54:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:16,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:16,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:16,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405553721] [2021-08-06 13:54:16,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405553721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:16,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:16,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:16,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983550720] [2021-08-06 13:54:16,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:16,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:16,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:16,919 INFO L87 Difference]: Start difference. First operand 9168 states and 24635 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:18,504 INFO L93 Difference]: Finished difference Result 20209 states and 53623 transitions. [2021-08-06 13:54:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:18,505 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:18,540 INFO L225 Difference]: With dead ends: 20209 [2021-08-06 13:54:18,540 INFO L226 Difference]: Without dead ends: 20209 [2021-08-06 13:54:18,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1313.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:18,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20209 states. [2021-08-06 13:54:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20209 to 9182. [2021-08-06 13:54:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9182 states, 9180 states have (on average 2.6880174291939) internal successors, (24676), 9181 states have internal predecessors, (24676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:18,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9182 states to 9182 states and 24676 transitions. [2021-08-06 13:54:18,756 INFO L78 Accepts]: Start accepts. Automaton has 9182 states and 24676 transitions. Word has length 114 [2021-08-06 13:54:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:18,756 INFO L470 AbstractCegarLoop]: Abstraction has 9182 states and 24676 transitions. [2021-08-06 13:54:18,756 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) [2021-08-06 13:54:18,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9182 states and 24676 transitions. [2021-08-06 13:54:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:18,769 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:18,769 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] [2021-08-06 13:54:18,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-06 13:54:18,769 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)] === [2021-08-06 13:54:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash -891471124, now seen corresponding path program 29 times [2021-08-06 13:54:18,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:18,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377568291] [2021-08-06 13:54:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:18,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:19,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:19,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377568291] [2021-08-06 13:54:19,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377568291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:19,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:19,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:19,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208889904] [2021-08-06 13:54:19,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:19,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:19,271 INFO L87 Difference]: Start difference. First operand 9182 states and 24676 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:20,770 INFO L93 Difference]: Finished difference Result 19063 states and 49909 transitions. [2021-08-06 13:54:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:20,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:20,805 INFO L225 Difference]: With dead ends: 19063 [2021-08-06 13:54:20,805 INFO L226 Difference]: Without dead ends: 19063 [2021-08-06 13:54:20,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1283.1ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19063 states. [2021-08-06 13:54:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19063 to 9000. [2021-08-06 13:54:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9000 states, 8998 states have (on average 2.6831518115136697) internal successors, (24143), 8999 states have internal predecessors, (24143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 24143 transitions. [2021-08-06 13:54:21,026 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 24143 transitions. Word has length 114 [2021-08-06 13:54:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:21,026 INFO L470 AbstractCegarLoop]: Abstraction has 9000 states and 24143 transitions. [2021-08-06 13:54:21,026 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) [2021-08-06 13:54:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 24143 transitions. [2021-08-06 13:54:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:21,039 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:21,039 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:21,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-06 13:54:21,039 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)] === [2021-08-06 13:54:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash -978852400, now seen corresponding path program 30 times [2021-08-06 13:54:21,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:21,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664014447] [2021-08-06 13:54:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:21,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:21,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:21,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664014447] [2021-08-06 13:54:21,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664014447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:21,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:21,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:21,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838704651] [2021-08-06 13:54:21,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:21,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:21,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:21,499 INFO L87 Difference]: Start difference. First operand 9000 states and 24143 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:23,005 INFO L93 Difference]: Finished difference Result 19201 states and 50503 transitions. [2021-08-06 13:54:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:23,006 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 [2021-08-06 13:54:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:23,042 INFO L225 Difference]: With dead ends: 19201 [2021-08-06 13:54:23,042 INFO L226 Difference]: Without dead ends: 19201 [2021-08-06 13:54:23,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1240.6ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19201 states. [2021-08-06 13:54:23,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19201 to 8972. [2021-08-06 13:54:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8972 states, 8970 states have (on average 2.6823857302118173) internal successors, (24061), 8971 states have internal predecessors, (24061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 24061 transitions. [2021-08-06 13:54:23,249 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 24061 transitions. Word has length 114 [2021-08-06 13:54:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:23,250 INFO L470 AbstractCegarLoop]: Abstraction has 8972 states and 24061 transitions. [2021-08-06 13:54:23,250 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) [2021-08-06 13:54:23,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 24061 transitions. [2021-08-06 13:54:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:23,262 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:23,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:23,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-06 13:54:23,262 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)] === [2021-08-06 13:54:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1106719734, now seen corresponding path program 31 times [2021-08-06 13:54:23,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:23,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362980486] [2021-08-06 13:54:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:23,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:23,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362980486] [2021-08-06 13:54:23,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362980486] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:23,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:23,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797542065] [2021-08-06 13:54:23,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:23,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:23,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:23,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:23,713 INFO L87 Difference]: Start difference. First operand 8972 states and 24061 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:25,116 INFO L93 Difference]: Finished difference Result 12595 states and 32983 transitions. [2021-08-06 13:54:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:25,117 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:25,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:25,139 INFO L225 Difference]: With dead ends: 12595 [2021-08-06 13:54:25,139 INFO L226 Difference]: Without dead ends: 12595 [2021-08-06 13:54:25,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1170.4ms TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12595 states. [2021-08-06 13:54:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12595 to 7306. [2021-08-06 13:54:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7306 states, 7304 states have (on average 2.6521084337349397) internal successors, (19371), 7305 states have internal predecessors, (19371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 19371 transitions. [2021-08-06 13:54:25,321 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 19371 transitions. Word has length 114 [2021-08-06 13:54:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:25,322 INFO L470 AbstractCegarLoop]: Abstraction has 7306 states and 19371 transitions. [2021-08-06 13:54:25,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 19371 transitions. [2021-08-06 13:54:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:25,331 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:25,332 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] [2021-08-06 13:54:25,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-06 13:54:25,332 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)] === [2021-08-06 13:54:25,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:25,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1522828576, now seen corresponding path program 5 times [2021-08-06 13:54:25,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:25,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098651622] [2021-08-06 13:54:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:25,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:26,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:26,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098651622] [2021-08-06 13:54:26,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098651622] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:26,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:26,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:54:26,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759419191] [2021-08-06 13:54:26,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:54:26,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:26,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:54:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:54:26,340 INFO L87 Difference]: Start difference. First operand 7306 states and 19371 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:30,199 INFO L93 Difference]: Finished difference Result 13562 states and 36228 transitions. [2021-08-06 13:54:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 13:54:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:30,220 INFO L225 Difference]: With dead ends: 13562 [2021-08-06 13:54:30,221 INFO L226 Difference]: Without dead ends: 13462 [2021-08-06 13:54:30,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 2500.0ms TimeCoverageRelationStatistics Valid=986, Invalid=3570, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 13:54:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2021-08-06 13:54:30,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 9144. [2021-08-06 13:54:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9144 states, 9142 states have (on average 2.6819076788448917) internal successors, (24518), 9143 states have internal predecessors, (24518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9144 states to 9144 states and 24518 transitions. [2021-08-06 13:54:30,391 INFO L78 Accepts]: Start accepts. Automaton has 9144 states and 24518 transitions. Word has length 114 [2021-08-06 13:54:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:30,392 INFO L470 AbstractCegarLoop]: Abstraction has 9144 states and 24518 transitions. [2021-08-06 13:54:30,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 9144 states and 24518 transitions. [2021-08-06 13:54:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:30,403 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:30,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:30,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-06 13:54:30,404 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)] === [2021-08-06 13:54:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -298601598, now seen corresponding path program 32 times [2021-08-06 13:54:30,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:30,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20854292] [2021-08-06 13:54:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:30,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:30,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:30,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20854292] [2021-08-06 13:54:30,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20854292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:30,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:30,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:30,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544557879] [2021-08-06 13:54:30,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:30,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:30,838 INFO L87 Difference]: Start difference. First operand 9144 states and 24518 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:32,287 INFO L93 Difference]: Finished difference Result 17688 states and 46979 transitions. [2021-08-06 13:54:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:32,288 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 [2021-08-06 13:54:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:32,315 INFO L225 Difference]: With dead ends: 17688 [2021-08-06 13:54:32,315 INFO L226 Difference]: Without dead ends: 17688 [2021-08-06 13:54:32,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1216.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17688 states. [2021-08-06 13:54:32,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17688 to 9144. [2021-08-06 13:54:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9144 states, 9142 states have (on average 2.6819076788448917) internal successors, (24518), 9143 states have internal predecessors, (24518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9144 states to 9144 states and 24518 transitions. [2021-08-06 13:54:32,505 INFO L78 Accepts]: Start accepts. Automaton has 9144 states and 24518 transitions. Word has length 114 [2021-08-06 13:54:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:32,505 INFO L470 AbstractCegarLoop]: Abstraction has 9144 states and 24518 transitions. [2021-08-06 13:54:32,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 9144 states and 24518 transitions. [2021-08-06 13:54:32,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:32,519 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:32,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:32,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-06 13:54:32,519 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)] === [2021-08-06 13:54:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:32,520 INFO L82 PathProgramCache]: Analyzing trace with hash 772417890, now seen corresponding path program 33 times [2021-08-06 13:54:32,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:32,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882850718] [2021-08-06 13:54:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:32,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:32,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:32,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882850718] [2021-08-06 13:54:32,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882850718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:32,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:32,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:32,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092187533] [2021-08-06 13:54:32,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:32,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:32,965 INFO L87 Difference]: Start difference. First operand 9144 states and 24518 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:34,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:34,480 INFO L93 Difference]: Finished difference Result 20288 states and 53660 transitions. [2021-08-06 13:54:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:34,480 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 [2021-08-06 13:54:34,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:34,517 INFO L225 Difference]: With dead ends: 20288 [2021-08-06 13:54:34,518 INFO L226 Difference]: Without dead ends: 20288 [2021-08-06 13:54:34,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1259.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20288 states. [2021-08-06 13:54:34,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20288 to 9072. [2021-08-06 13:54:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9072 states, 9070 states have (on average 2.6800441014332965) internal successors, (24308), 9071 states have internal predecessors, (24308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:34,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9072 states to 9072 states and 24308 transitions. [2021-08-06 13:54:34,752 INFO L78 Accepts]: Start accepts. Automaton has 9072 states and 24308 transitions. Word has length 114 [2021-08-06 13:54:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:34,752 INFO L470 AbstractCegarLoop]: Abstraction has 9072 states and 24308 transitions. [2021-08-06 13:54:34,752 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) [2021-08-06 13:54:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9072 states and 24308 transitions. [2021-08-06 13:54:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:34,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:34,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:34,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-06 13:54:34,764 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)] === [2021-08-06 13:54:34,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:34,765 INFO L82 PathProgramCache]: Analyzing trace with hash -466702208, now seen corresponding path program 34 times [2021-08-06 13:54:34,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:34,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470686231] [2021-08-06 13:54:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:34,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:35,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:35,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:35,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470686231] [2021-08-06 13:54:35,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470686231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:35,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:35,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:35,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374397180] [2021-08-06 13:54:35,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:35,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:35,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:35,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:35,205 INFO L87 Difference]: Start difference. First operand 9072 states and 24308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:36,680 INFO L93 Difference]: Finished difference Result 17048 states and 44616 transitions. [2021-08-06 13:54:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:36,681 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:36,710 INFO L225 Difference]: With dead ends: 17048 [2021-08-06 13:54:36,710 INFO L226 Difference]: Without dead ends: 17048 [2021-08-06 13:54:36,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1278.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2021-08-06 13:54:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 7700. [2021-08-06 13:54:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7700 states, 7698 states have (on average 2.65341647181086) internal successors, (20426), 7699 states have internal predecessors, (20426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7700 states to 7700 states and 20426 transitions. [2021-08-06 13:54:36,900 INFO L78 Accepts]: Start accepts. Automaton has 7700 states and 20426 transitions. Word has length 114 [2021-08-06 13:54:36,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:36,900 INFO L470 AbstractCegarLoop]: Abstraction has 7700 states and 20426 transitions. [2021-08-06 13:54:36,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states and 20426 transitions. [2021-08-06 13:54:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:36,911 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:36,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:36,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-06 13:54:36,911 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)] === [2021-08-06 13:54:36,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1683665534, now seen corresponding path program 6 times [2021-08-06 13:54:36,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:36,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981999107] [2021-08-06 13:54:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:36,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:37,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:37,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981999107] [2021-08-06 13:54:37,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981999107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:37,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:37,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:54:37,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76798807] [2021-08-06 13:54:37,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:54:37,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:54:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:54:37,893 INFO L87 Difference]: Start difference. First operand 7700 states and 20426 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:41,542 INFO L93 Difference]: Finished difference Result 15347 states and 40851 transitions. [2021-08-06 13:54:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 13:54:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:41,577 INFO L225 Difference]: With dead ends: 15347 [2021-08-06 13:54:41,577 INFO L226 Difference]: Without dead ends: 15247 [2021-08-06 13:54:41,578 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 2643.1ms TimeCoverageRelationStatistics Valid=1073, Invalid=3897, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 13:54:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15247 states. [2021-08-06 13:54:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15247 to 9136. [2021-08-06 13:54:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9136 states, 9134 states have (on average 2.6774687978979634) internal successors, (24456), 9135 states have internal predecessors, (24456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9136 states to 9136 states and 24456 transitions. [2021-08-06 13:54:41,763 INFO L78 Accepts]: Start accepts. Automaton has 9136 states and 24456 transitions. Word has length 114 [2021-08-06 13:54:41,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:41,763 INFO L470 AbstractCegarLoop]: Abstraction has 9136 states and 24456 transitions. [2021-08-06 13:54:41,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9136 states and 24456 transitions. [2021-08-06 13:54:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:41,775 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:41,775 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:41,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-06 13:54:41,775 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)] === [2021-08-06 13:54:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:41,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1387074784, now seen corresponding path program 35 times [2021-08-06 13:54:41,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:41,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872890918] [2021-08-06 13:54:41,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:41,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:42,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:42,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872890918] [2021-08-06 13:54:42,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872890918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:42,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653472607] [2021-08-06 13:54:42,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:42,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:42,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:42,205 INFO L87 Difference]: Start difference. First operand 9136 states and 24456 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:43,725 INFO L93 Difference]: Finished difference Result 22578 states and 59215 transitions. [2021-08-06 13:54:43,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:43,764 INFO L225 Difference]: With dead ends: 22578 [2021-08-06 13:54:43,764 INFO L226 Difference]: Without dead ends: 22578 [2021-08-06 13:54:43,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1231.2ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22578 states. [2021-08-06 13:54:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22578 to 9080. [2021-08-06 13:54:44,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 9078 states have (on average 2.675919806124697) internal successors, (24292), 9079 states have internal predecessors, (24292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 24292 transitions. [2021-08-06 13:54:44,020 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 24292 transitions. Word has length 114 [2021-08-06 13:54:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:44,020 INFO L470 AbstractCegarLoop]: Abstraction has 9080 states and 24292 transitions. [2021-08-06 13:54:44,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 24292 transitions. [2021-08-06 13:54:44,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:44,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:44,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:44,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-06 13:54:44,033 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)] === [2021-08-06 13:54:44,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:44,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1668772414, now seen corresponding path program 36 times [2021-08-06 13:54:44,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:44,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083414561] [2021-08-06 13:54:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:44,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:44,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:44,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083414561] [2021-08-06 13:54:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083414561] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:44,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:44,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996500945] [2021-08-06 13:54:44,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:44,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:44,540 INFO L87 Difference]: Start difference. First operand 9080 states and 24292 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:46,093 INFO L93 Difference]: Finished difference Result 21979 states and 56983 transitions. [2021-08-06 13:54:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:46,131 INFO L225 Difference]: With dead ends: 21979 [2021-08-06 13:54:46,131 INFO L226 Difference]: Without dead ends: 21979 [2021-08-06 13:54:46,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1316.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21979 states. [2021-08-06 13:54:46,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21979 to 7732. [2021-08-06 13:54:46,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7732 states, 7730 states have (on average 2.654333764553687) internal successors, (20518), 7731 states have internal predecessors, (20518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7732 states to 7732 states and 20518 transitions. [2021-08-06 13:54:46,359 INFO L78 Accepts]: Start accepts. Automaton has 7732 states and 20518 transitions. Word has length 114 [2021-08-06 13:54:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:46,359 INFO L470 AbstractCegarLoop]: Abstraction has 7732 states and 20518 transitions. [2021-08-06 13:54:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 7732 states and 20518 transitions. [2021-08-06 13:54:46,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:46,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:46,369 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] [2021-08-06 13:54:46,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-06 13:54:46,370 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)] === [2021-08-06 13:54:46,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:46,370 INFO L82 PathProgramCache]: Analyzing trace with hash -765796160, now seen corresponding path program 7 times [2021-08-06 13:54:46,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:46,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271268354] [2021-08-06 13:54:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:46,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:47,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:47,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271268354] [2021-08-06 13:54:47,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271268354] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:47,360 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:47,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:54:47,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844523912] [2021-08-06 13:54:47,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:54:47,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:54:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:54:47,361 INFO L87 Difference]: Start difference. First operand 7732 states and 20518 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:51,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:51,716 INFO L93 Difference]: Finished difference Result 14886 states and 39548 transitions. [2021-08-06 13:54:51,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-06 13:54:51,716 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:51,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:51,738 INFO L225 Difference]: With dead ends: 14886 [2021-08-06 13:54:51,738 INFO L226 Difference]: Without dead ends: 14776 [2021-08-06 13:54:51,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 2882.0ms TimeCoverageRelationStatistics Valid=1198, Invalid=4352, Unknown=0, NotChecked=0, Total=5550 [2021-08-06 13:54:51,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14776 states. [2021-08-06 13:54:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14776 to 9166. [2021-08-06 13:54:51,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9166 states, 9164 states have (on average 2.6773243125272805) internal successors, (24535), 9165 states have internal predecessors, (24535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9166 states to 9166 states and 24535 transitions. [2021-08-06 13:54:51,900 INFO L78 Accepts]: Start accepts. Automaton has 9166 states and 24535 transitions. Word has length 114 [2021-08-06 13:54:51,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:51,900 INFO L470 AbstractCegarLoop]: Abstraction has 9166 states and 24535 transitions. [2021-08-06 13:54:51,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand 9166 states and 24535 transitions. [2021-08-06 13:54:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:51,912 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:51,912 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:51,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-06 13:54:51,912 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)] === [2021-08-06 13:54:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash 458430818, now seen corresponding path program 37 times [2021-08-06 13:54:51,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:51,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128336651] [2021-08-06 13:54:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:51,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:52,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:52,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128336651] [2021-08-06 13:54:52,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128336651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:52,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:52,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:52,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997860724] [2021-08-06 13:54:52,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:52,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:52,357 INFO L87 Difference]: Start difference. First operand 9166 states and 24535 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:53,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:53,932 INFO L93 Difference]: Finished difference Result 22991 states and 60048 transitions. [2021-08-06 13:54:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:54:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:53,977 INFO L225 Difference]: With dead ends: 22991 [2021-08-06 13:54:53,978 INFO L226 Difference]: Without dead ends: 22991 [2021-08-06 13:54:53,978 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 [2021-08-06 13:54:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22991 states. [2021-08-06 13:54:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22991 to 9078. [2021-08-06 13:54:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9078 states, 9076 states have (on average 2.6750771264874396) internal successors, (24279), 9077 states have internal predecessors, (24279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9078 states to 9078 states and 24279 transitions. [2021-08-06 13:54:54,214 INFO L78 Accepts]: Start accepts. Automaton has 9078 states and 24279 transitions. Word has length 114 [2021-08-06 13:54:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:54,214 INFO L470 AbstractCegarLoop]: Abstraction has 9078 states and 24279 transitions. [2021-08-06 13:54:54,214 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) [2021-08-06 13:54:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 9078 states and 24279 transitions. [2021-08-06 13:54:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:54,226 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:54,226 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] [2021-08-06 13:54:54,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-06 13:54:54,227 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)] === [2021-08-06 13:54:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash -473587810, now seen corresponding path program 38 times [2021-08-06 13:54:54,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:54,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994009840] [2021-08-06 13:54:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:54,229 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:54,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:54,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994009840] [2021-08-06 13:54:54,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994009840] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:54,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:54,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:54:54,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143436580] [2021-08-06 13:54:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:54:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:54:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:54:54,659 INFO L87 Difference]: Start difference. First operand 9078 states and 24279 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:54:56,082 INFO L93 Difference]: Finished difference Result 17426 states and 45640 transitions. [2021-08-06 13:54:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:54:56,083 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 [2021-08-06 13:54:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:54:56,111 INFO L225 Difference]: With dead ends: 17426 [2021-08-06 13:54:56,112 INFO L226 Difference]: Without dead ends: 17426 [2021-08-06 13:54:56,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1245.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:54:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17426 states. [2021-08-06 13:54:56,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17426 to 7682. [2021-08-06 13:54:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7682 states, 7680 states have (on average 2.650390625) internal successors, (20355), 7681 states have internal predecessors, (20355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:54:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7682 states to 7682 states and 20355 transitions. [2021-08-06 13:54:56,334 INFO L78 Accepts]: Start accepts. Automaton has 7682 states and 20355 transitions. Word has length 114 [2021-08-06 13:54:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:54:56,335 INFO L470 AbstractCegarLoop]: Abstraction has 7682 states and 20355 transitions. [2021-08-06 13:54:56,335 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) [2021-08-06 13:54:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7682 states and 20355 transitions. [2021-08-06 13:54:56,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:54:56,345 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:54:56,345 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:54:56,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-06 13:54:56,345 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)] === [2021-08-06 13:54:56,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:54:56,346 INFO L82 PathProgramCache]: Analyzing trace with hash -558447198, now seen corresponding path program 8 times [2021-08-06 13:54:56,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:54:56,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921300702] [2021-08-06 13:54:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:54:56,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:54:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:54:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:54:57,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:54:57,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921300702] [2021-08-06 13:54:57,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921300702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:54:57,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:54:57,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:54:57,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074075862] [2021-08-06 13:54:57,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:54:57,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:54:57,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:54:57,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:54:57,328 INFO L87 Difference]: Start difference. First operand 7682 states and 20355 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:01,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:01,066 INFO L93 Difference]: Finished difference Result 13335 states and 35517 transitions. [2021-08-06 13:55:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 13:55:01,067 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:01,092 INFO L225 Difference]: With dead ends: 13335 [2021-08-06 13:55:01,092 INFO L226 Difference]: Without dead ends: 13235 [2021-08-06 13:55:01,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2375.6ms TimeCoverageRelationStatistics Valid=978, Invalid=3578, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 13:55:01,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13235 states. [2021-08-06 13:55:01,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13235 to 9146. [2021-08-06 13:55:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9146 states, 9144 states have (on average 2.6757436570428696) internal successors, (24467), 9145 states have internal predecessors, (24467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9146 states to 9146 states and 24467 transitions. [2021-08-06 13:55:01,268 INFO L78 Accepts]: Start accepts. Automaton has 9146 states and 24467 transitions. Word has length 114 [2021-08-06 13:55:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:01,268 INFO L470 AbstractCegarLoop]: Abstraction has 9146 states and 24467 transitions. [2021-08-06 13:55:01,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9146 states and 24467 transitions. [2021-08-06 13:55:01,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:01,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:01,280 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] [2021-08-06 13:55:01,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-06 13:55:01,280 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)] === [2021-08-06 13:55:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:01,281 INFO L82 PathProgramCache]: Analyzing trace with hash 665779780, now seen corresponding path program 39 times [2021-08-06 13:55:01,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:01,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065506878] [2021-08-06 13:55:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:01,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:01,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:01,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065506878] [2021-08-06 13:55:01,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065506878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:01,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:01,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:01,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118508957] [2021-08-06 13:55:01,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:01,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:01,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:01,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:01,697 INFO L87 Difference]: Start difference. First operand 9146 states and 24467 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:03,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:03,186 INFO L93 Difference]: Finished difference Result 17044 states and 45061 transitions. [2021-08-06 13:55:03,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:03,187 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 [2021-08-06 13:55:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:03,216 INFO L225 Difference]: With dead ends: 17044 [2021-08-06 13:55:03,216 INFO L226 Difference]: Without dead ends: 17044 [2021-08-06 13:55:03,217 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1296.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17044 states. [2021-08-06 13:55:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17044 to 9118. [2021-08-06 13:55:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9118 states, 9116 states have (on average 2.6749670908293113) internal successors, (24385), 9117 states have internal predecessors, (24385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 24385 transitions. [2021-08-06 13:55:03,420 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 24385 transitions. Word has length 114 [2021-08-06 13:55:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:03,420 INFO L470 AbstractCegarLoop]: Abstraction has 9118 states and 24385 transitions. [2021-08-06 13:55:03,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 24385 transitions. [2021-08-06 13:55:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:03,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:03,433 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] [2021-08-06 13:55:03,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-06 13:55:03,433 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)] === [2021-08-06 13:55:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -573340318, now seen corresponding path program 40 times [2021-08-06 13:55:03,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:03,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960607344] [2021-08-06 13:55:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:03,434 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:03,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:03,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960607344] [2021-08-06 13:55:03,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960607344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:03,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:03,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:03,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804314857] [2021-08-06 13:55:03,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:03,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:03,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:03,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:03,851 INFO L87 Difference]: Start difference. First operand 9118 states and 24385 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:05,381 INFO L93 Difference]: Finished difference Result 16445 states and 42829 transitions. [2021-08-06 13:55:05,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:05,381 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 [2021-08-06 13:55:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:05,407 INFO L225 Difference]: With dead ends: 16445 [2021-08-06 13:55:05,408 INFO L226 Difference]: Without dead ends: 16445 [2021-08-06 13:55:05,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1299.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:05,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16445 states. [2021-08-06 13:55:05,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16445 to 7770. [2021-08-06 13:55:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 7768 states have (on average 2.65332131822863) internal successors, (20611), 7769 states have internal predecessors, (20611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:05,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 20611 transitions. [2021-08-06 13:55:05,584 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 20611 transitions. Word has length 114 [2021-08-06 13:55:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:05,585 INFO L470 AbstractCegarLoop]: Abstraction has 7770 states and 20611 transitions. [2021-08-06 13:55:05,585 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) [2021-08-06 13:55:05,585 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 20611 transitions. [2021-08-06 13:55:05,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:05,594 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:05,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:05,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-06 13:55:05,595 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)] === [2021-08-06 13:55:05,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:05,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1287058404, now seen corresponding path program 9 times [2021-08-06 13:55:05,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:05,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854493693] [2021-08-06 13:55:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:05,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:06,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:06,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:06,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854493693] [2021-08-06 13:55:06,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854493693] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:06,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:06,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:55:06,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982968200] [2021-08-06 13:55:06,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:55:06,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:06,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:55:06,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:55:06,577 INFO L87 Difference]: Start difference. First operand 7770 states and 20611 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:10,428 INFO L93 Difference]: Finished difference Result 14515 states and 38435 transitions. [2021-08-06 13:55:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-06 13:55:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:10,452 INFO L225 Difference]: With dead ends: 14515 [2021-08-06 13:55:10,452 INFO L226 Difference]: Without dead ends: 14405 [2021-08-06 13:55:10,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 2683.4ms TimeCoverageRelationStatistics Valid=1104, Invalid=4008, Unknown=0, NotChecked=0, Total=5112 [2021-08-06 13:55:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14405 states. [2021-08-06 13:55:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14405 to 9198. [2021-08-06 13:55:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9198 states, 9196 states have (on average 2.676707264027838) internal successors, (24615), 9197 states have internal predecessors, (24615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9198 states to 9198 states and 24615 transitions. [2021-08-06 13:55:10,622 INFO L78 Accepts]: Start accepts. Automaton has 9198 states and 24615 transitions. Word has length 114 [2021-08-06 13:55:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:10,622 INFO L470 AbstractCegarLoop]: Abstraction has 9198 states and 24615 transitions. [2021-08-06 13:55:10,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9198 states and 24615 transitions. [2021-08-06 13:55:10,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:10,633 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:10,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:10,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-06 13:55:10,634 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)] === [2021-08-06 13:55:10,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:10,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1783681914, now seen corresponding path program 41 times [2021-08-06 13:55:10,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:10,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293280613] [2021-08-06 13:55:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:10,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:11,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:11,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293280613] [2021-08-06 13:55:11,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293280613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:11,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:11,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:11,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799829603] [2021-08-06 13:55:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:11,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:11,206 INFO L87 Difference]: Start difference. First operand 9198 states and 24615 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:12,677 INFO L93 Difference]: Finished difference Result 22356 states and 58169 transitions. [2021-08-06 13:55:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:12,678 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 [2021-08-06 13:55:12,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:12,714 INFO L225 Difference]: With dead ends: 22356 [2021-08-06 13:55:12,714 INFO L226 Difference]: Without dead ends: 22356 [2021-08-06 13:55:12,716 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1323.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22356 states. [2021-08-06 13:55:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22356 to 9110. [2021-08-06 13:55:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9108 states have (on average 2.6744620114185333) internal successors, (24359), 9109 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 24359 transitions. [2021-08-06 13:55:12,948 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 24359 transitions. Word has length 114 [2021-08-06 13:55:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:12,948 INFO L470 AbstractCegarLoop]: Abstraction has 9110 states and 24359 transitions. [2021-08-06 13:55:12,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:12,948 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 24359 transitions. [2021-08-06 13:55:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:12,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:12,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:12,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-06 13:55:12,959 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)] === [2021-08-06 13:55:12,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:12,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1579266754, now seen corresponding path program 42 times [2021-08-06 13:55:12,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:12,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246184287] [2021-08-06 13:55:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:12,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:13,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:13,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246184287] [2021-08-06 13:55:13,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246184287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:13,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:13,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:13,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584029333] [2021-08-06 13:55:13,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:13,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:13,443 INFO L87 Difference]: Start difference. First operand 9110 states and 24359 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:14,924 INFO L93 Difference]: Finished difference Result 16791 states and 43761 transitions. [2021-08-06 13:55:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:14,951 INFO L225 Difference]: With dead ends: 16791 [2021-08-06 13:55:14,952 INFO L226 Difference]: Without dead ends: 16791 [2021-08-06 13:55:14,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1307.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2021-08-06 13:55:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 7738. [2021-08-06 13:55:15,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7738 states, 7736 states have (on average 2.652404343329886) internal successors, (20519), 7737 states have internal predecessors, (20519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7738 states to 7738 states and 20519 transitions. [2021-08-06 13:55:15,134 INFO L78 Accepts]: Start accepts. Automaton has 7738 states and 20519 transitions. Word has length 114 [2021-08-06 13:55:15,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:15,134 INFO L470 AbstractCegarLoop]: Abstraction has 7738 states and 20519 transitions. [2021-08-06 13:55:15,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7738 states and 20519 transitions. [2021-08-06 13:55:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:15,143 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:15,143 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] [2021-08-06 13:55:15,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-06 13:55:15,144 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)] === [2021-08-06 13:55:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:15,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1419816158, now seen corresponding path program 10 times [2021-08-06 13:55:15,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:15,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315253095] [2021-08-06 13:55:15,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:15,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:16,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:16,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315253095] [2021-08-06 13:55:16,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315253095] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:16,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:16,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:55:16,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486063970] [2021-08-06 13:55:16,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:55:16,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:55:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:55:16,113 INFO L87 Difference]: Start difference. First operand 7738 states and 20519 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:19,856 INFO L93 Difference]: Finished difference Result 14282 states and 37757 transitions. [2021-08-06 13:55:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-06 13:55:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:19,875 INFO L225 Difference]: With dead ends: 14282 [2021-08-06 13:55:19,875 INFO L226 Difference]: Without dead ends: 14125 [2021-08-06 13:55:19,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2319.0ms TimeCoverageRelationStatistics Valid=1009, Invalid=3683, Unknown=0, NotChecked=0, Total=4692 [2021-08-06 13:55:19,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2021-08-06 13:55:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 10471. [2021-08-06 13:55:20,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 10469 states have (on average 2.6957684592606745) internal successors, (28222), 10470 states have internal predecessors, (28222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:20,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 28222 transitions. [2021-08-06 13:55:20,032 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 28222 transitions. Word has length 114 [2021-08-06 13:55:20,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:20,032 INFO L470 AbstractCegarLoop]: Abstraction has 10471 states and 28222 transitions. [2021-08-06 13:55:20,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 28222 transitions. [2021-08-06 13:55:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:20,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:20,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:20,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-06 13:55:20,045 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)] === [2021-08-06 13:55:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:20,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1650924160, now seen corresponding path program 43 times [2021-08-06 13:55:20,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:20,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955572440] [2021-08-06 13:55:20,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:20,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:20,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:20,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955572440] [2021-08-06 13:55:20,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955572440] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:20,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:20,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555760506] [2021-08-06 13:55:20,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:20,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:20,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:20,505 INFO L87 Difference]: Start difference. First operand 10471 states and 28222 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:21,956 INFO L93 Difference]: Finished difference Result 18730 states and 49501 transitions. [2021-08-06 13:55:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:21,960 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:21,989 INFO L225 Difference]: With dead ends: 18730 [2021-08-06 13:55:21,989 INFO L226 Difference]: Without dead ends: 18730 [2021-08-06 13:55:21,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1254.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:22,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2021-08-06 13:55:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 10411. [2021-08-06 13:55:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10411 states, 10409 states have (on average 2.694591219137285) internal successors, (28048), 10410 states have internal predecessors, (28048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10411 states to 10411 states and 28048 transitions. [2021-08-06 13:55:22,235 INFO L78 Accepts]: Start accepts. Automaton has 10411 states and 28048 transitions. Word has length 114 [2021-08-06 13:55:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:22,236 INFO L470 AbstractCegarLoop]: Abstraction has 10411 states and 28048 transitions. [2021-08-06 13:55:22,236 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) [2021-08-06 13:55:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 10411 states and 28048 transitions. [2021-08-06 13:55:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:22,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:22,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:22,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-06 13:55:22,248 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)] === [2021-08-06 13:55:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:22,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1712024508, now seen corresponding path program 44 times [2021-08-06 13:55:22,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:22,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193111641] [2021-08-06 13:55:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:22,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:22,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:22,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193111641] [2021-08-06 13:55:22,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193111641] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:22,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:22,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:22,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87782151] [2021-08-06 13:55:22,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:22,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:22,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:22,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:22,725 INFO L87 Difference]: Start difference. First operand 10411 states and 28048 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:24,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:24,265 INFO L93 Difference]: Finished difference Result 18470 states and 48817 transitions. [2021-08-06 13:55:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:24,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:24,299 INFO L225 Difference]: With dead ends: 18470 [2021-08-06 13:55:24,300 INFO L226 Difference]: Without dead ends: 18470 [2021-08-06 13:55:24,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1354.0ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:24,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18470 states. [2021-08-06 13:55:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18470 to 10379. [2021-08-06 13:55:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10377 states have (on average 2.6940348848414764) internal successors, (27956), 10378 states have internal predecessors, (27956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 27956 transitions. [2021-08-06 13:55:24,585 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 27956 transitions. Word has length 114 [2021-08-06 13:55:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:24,585 INFO L470 AbstractCegarLoop]: Abstraction has 10379 states and 27956 transitions. [2021-08-06 13:55:24,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 27956 transitions. [2021-08-06 13:55:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:24,597 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:24,597 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:24,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-06 13:55:24,597 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)] === [2021-08-06 13:55:24,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:24,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1779678172, now seen corresponding path program 45 times [2021-08-06 13:55:24,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:24,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632240108] [2021-08-06 13:55:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:24,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:25,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:25,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632240108] [2021-08-06 13:55:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632240108] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:25,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:25,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130607139] [2021-08-06 13:55:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:25,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:25,049 INFO L87 Difference]: Start difference. First operand 10379 states and 27956 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:26,461 INFO L93 Difference]: Finished difference Result 13309 states and 35451 transitions. [2021-08-06 13:55:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:26,461 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 [2021-08-06 13:55:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:26,482 INFO L225 Difference]: With dead ends: 13309 [2021-08-06 13:55:26,482 INFO L226 Difference]: Without dead ends: 13309 [2021-08-06 13:55:26,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1220.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13309 states. [2021-08-06 13:55:26,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13309 to 9239. [2021-08-06 13:55:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 9237 states have (on average 2.683988307892173) internal successors, (24792), 9238 states have internal predecessors, (24792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 24792 transitions. [2021-08-06 13:55:26,631 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 24792 transitions. Word has length 114 [2021-08-06 13:55:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:26,631 INFO L470 AbstractCegarLoop]: Abstraction has 9239 states and 24792 transitions. [2021-08-06 13:55:26,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 24792 transitions. [2021-08-06 13:55:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:26,643 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:26,643 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:26,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-06 13:55:26,643 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)] === [2021-08-06 13:55:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1470087578, now seen corresponding path program 46 times [2021-08-06 13:55:26,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:26,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568177123] [2021-08-06 13:55:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:26,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:27,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:27,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568177123] [2021-08-06 13:55:27,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568177123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:27,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:27,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 13:55:27,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356361356] [2021-08-06 13:55:27,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 13:55:27,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 13:55:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-06 13:55:27,140 INFO L87 Difference]: Start difference. First operand 9239 states and 24792 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) [2021-08-06 13:55:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:28,283 INFO L93 Difference]: Finished difference Result 10711 states and 27913 transitions. [2021-08-06 13:55:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 13:55:28,284 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 [2021-08-06 13:55:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:28,300 INFO L225 Difference]: With dead ends: 10711 [2021-08-06 13:55:28,300 INFO L226 Difference]: Without dead ends: 10711 [2021-08-06 13:55:28,301 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 945.8ms TimeCoverageRelationStatistics Valid=338, Invalid=922, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 13:55:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10711 states. [2021-08-06 13:55:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10711 to 9027. [2021-08-06 13:55:28,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9027 states, 9025 states have (on average 2.6945152354570636) internal successors, (24318), 9026 states have internal predecessors, (24318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:28,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9027 states to 9027 states and 24318 transitions. [2021-08-06 13:55:28,467 INFO L78 Accepts]: Start accepts. Automaton has 9027 states and 24318 transitions. Word has length 114 [2021-08-06 13:55:28,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:28,467 INFO L470 AbstractCegarLoop]: Abstraction has 9027 states and 24318 transitions. [2021-08-06 13:55:28,467 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) [2021-08-06 13:55:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9027 states and 24318 transitions. [2021-08-06 13:55:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:28,481 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:28,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:28,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-06 13:55:28,481 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)] === [2021-08-06 13:55:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:28,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1934118080, now seen corresponding path program 11 times [2021-08-06 13:55:28,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:28,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796964876] [2021-08-06 13:55:28,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:28,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:28,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:29,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:29,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796964876] [2021-08-06 13:55:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796964876] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:29,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:55:29,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390931284] [2021-08-06 13:55:29,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:55:29,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:29,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:55:29,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:55:29,472 INFO L87 Difference]: Start difference. First operand 9027 states and 24318 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:33,375 INFO L93 Difference]: Finished difference Result 14547 states and 39078 transitions. [2021-08-06 13:55:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 13:55:33,375 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:33,395 INFO L225 Difference]: With dead ends: 14547 [2021-08-06 13:55:33,395 INFO L226 Difference]: Without dead ends: 14465 [2021-08-06 13:55:33,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 2736.7ms TimeCoverageRelationStatistics Valid=1080, Invalid=3890, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 13:55:33,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14465 states. [2021-08-06 13:55:33,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14465 to 10777. [2021-08-06 13:55:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10777 states, 10775 states have (on average 2.7149883990719257) internal successors, (29254), 10776 states have internal predecessors, (29254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 29254 transitions. [2021-08-06 13:55:33,558 INFO L78 Accepts]: Start accepts. Automaton has 10777 states and 29254 transitions. Word has length 114 [2021-08-06 13:55:33,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:33,558 INFO L470 AbstractCegarLoop]: Abstraction has 10777 states and 29254 transitions. [2021-08-06 13:55:33,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 10777 states and 29254 transitions. [2021-08-06 13:55:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:33,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:33,571 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] [2021-08-06 13:55:33,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-06 13:55:33,571 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)] === [2021-08-06 13:55:33,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:33,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1136622238, now seen corresponding path program 47 times [2021-08-06 13:55:33,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:33,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44144940] [2021-08-06 13:55:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:33,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:34,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:34,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44144940] [2021-08-06 13:55:34,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44144940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:34,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752187580] [2021-08-06 13:55:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:34,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:34,029 INFO L87 Difference]: Start difference. First operand 10777 states and 29254 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:35,492 INFO L93 Difference]: Finished difference Result 27777 states and 74175 transitions. [2021-08-06 13:55:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:35,609 INFO L225 Difference]: With dead ends: 27777 [2021-08-06 13:55:35,609 INFO L226 Difference]: Without dead ends: 27777 [2021-08-06 13:55:35,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1207.9ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:35,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27777 states. [2021-08-06 13:55:35,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27777 to 10875. [2021-08-06 13:55:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10875 states, 10873 states have (on average 2.71691345534811) internal successors, (29541), 10874 states have internal predecessors, (29541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 29541 transitions. [2021-08-06 13:55:35,857 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 29541 transitions. Word has length 114 [2021-08-06 13:55:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 10875 states and 29541 transitions. [2021-08-06 13:55:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 29541 transitions. [2021-08-06 13:55:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:35,871 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:35,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:35,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-06 13:55:35,871 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)] === [2021-08-06 13:55:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:35,872 INFO L82 PathProgramCache]: Analyzing trace with hash -65602750, now seen corresponding path program 48 times [2021-08-06 13:55:35,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:35,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789656994] [2021-08-06 13:55:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:35,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:36,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:36,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789656994] [2021-08-06 13:55:36,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789656994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:36,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:36,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393405114] [2021-08-06 13:55:36,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:36,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:36,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:36,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:36,345 INFO L87 Difference]: Start difference. First operand 10875 states and 29541 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:37,971 INFO L93 Difference]: Finished difference Result 30228 states and 80493 transitions. [2021-08-06 13:55:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:38,145 INFO L225 Difference]: With dead ends: 30228 [2021-08-06 13:55:38,145 INFO L226 Difference]: Without dead ends: 30228 [2021-08-06 13:55:38,146 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 [2021-08-06 13:55:38,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30228 states. [2021-08-06 13:55:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30228 to 10903. [2021-08-06 13:55:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10903 states, 10901 states have (on average 2.717457114026236) internal successors, (29623), 10902 states have internal predecessors, (29623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10903 states to 10903 states and 29623 transitions. [2021-08-06 13:55:38,464 INFO L78 Accepts]: Start accepts. Automaton has 10903 states and 29623 transitions. Word has length 114 [2021-08-06 13:55:38,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:38,464 INFO L470 AbstractCegarLoop]: Abstraction has 10903 states and 29623 transitions. [2021-08-06 13:55:38,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 10903 states and 29623 transitions. [2021-08-06 13:55:38,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:38,478 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:38,478 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] [2021-08-06 13:55:38,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-06 13:55:38,478 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)] === [2021-08-06 13:55:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1304722848, now seen corresponding path program 49 times [2021-08-06 13:55:38,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:38,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564943073] [2021-08-06 13:55:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:38,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:38,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:38,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564943073] [2021-08-06 13:55:38,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564943073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:38,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:38,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:38,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905116746] [2021-08-06 13:55:38,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:38,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:38,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:38,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:38,926 INFO L87 Difference]: Start difference. First operand 10903 states and 29623 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:40,444 INFO L93 Difference]: Finished difference Result 27008 states and 71572 transitions. [2021-08-06 13:55:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:40,503 INFO L225 Difference]: With dead ends: 27008 [2021-08-06 13:55:40,503 INFO L226 Difference]: Without dead ends: 27008 [2021-08-06 13:55:40,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1225.3ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27008 states. [2021-08-06 13:55:40,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27008 to 10819. [2021-08-06 13:55:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10817 states have (on average 2.715817694369973) internal successors, (29377), 10818 states have internal predecessors, (29377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 29377 transitions. [2021-08-06 13:55:40,791 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 29377 transitions. Word has length 114 [2021-08-06 13:55:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:40,791 INFO L470 AbstractCegarLoop]: Abstraction has 10819 states and 29377 transitions. [2021-08-06 13:55:40,791 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) [2021-08-06 13:55:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 29377 transitions. [2021-08-06 13:55:40,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:40,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:40,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:40,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-06 13:55:40,805 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)] === [2021-08-06 13:55:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:40,805 INFO L82 PathProgramCache]: Analyzing trace with hash 845644894, now seen corresponding path program 12 times [2021-08-06 13:55:40,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:40,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565222194] [2021-08-06 13:55:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:40,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:41,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:41,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565222194] [2021-08-06 13:55:41,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565222194] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:41,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:41,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:55:41,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461021103] [2021-08-06 13:55:41,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:55:41,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:41,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:55:41,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:55:41,778 INFO L87 Difference]: Start difference. First operand 10819 states and 29377 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:46,388 INFO L93 Difference]: Finished difference Result 17090 states and 45904 transitions. [2021-08-06 13:55:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-06 13:55:46,389 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:46,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:46,422 INFO L225 Difference]: With dead ends: 17090 [2021-08-06 13:55:46,422 INFO L226 Difference]: Without dead ends: 17008 [2021-08-06 13:55:46,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 2911.6ms TimeCoverageRelationStatistics Valid=1167, Invalid=4235, Unknown=0, NotChecked=0, Total=5402 [2021-08-06 13:55:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17008 states. [2021-08-06 13:55:46,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17008 to 10833. [2021-08-06 13:55:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10833 states, 10831 states have (on average 2.716092696888561) internal successors, (29418), 10832 states have internal predecessors, (29418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:46,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10833 states to 10833 states and 29418 transitions. [2021-08-06 13:55:46,677 INFO L78 Accepts]: Start accepts. Automaton has 10833 states and 29418 transitions. Word has length 114 [2021-08-06 13:55:46,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:46,678 INFO L470 AbstractCegarLoop]: Abstraction has 10833 states and 29418 transitions. [2021-08-06 13:55:46,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 10833 states and 29418 transitions. [2021-08-06 13:55:46,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:46,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:46,692 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] [2021-08-06 13:55:46,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-06 13:55:46,692 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)] === [2021-08-06 13:55:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:46,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2069871872, now seen corresponding path program 50 times [2021-08-06 13:55:46,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:46,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982442282] [2021-08-06 13:55:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:46,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:47,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:47,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982442282] [2021-08-06 13:55:47,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982442282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:47,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:47,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:47,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180305633] [2021-08-06 13:55:47,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:47,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:47,147 INFO L87 Difference]: Start difference. First operand 10833 states and 29418 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:48,620 INFO L93 Difference]: Finished difference Result 27949 states and 74406 transitions. [2021-08-06 13:55:48,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:48,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:48,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:48,668 INFO L225 Difference]: With dead ends: 27949 [2021-08-06 13:55:48,668 INFO L226 Difference]: Without dead ends: 27949 [2021-08-06 13:55:48,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1256.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27949 states. [2021-08-06 13:55:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27949 to 10875. [2021-08-06 13:55:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10875 states, 10873 states have (on average 2.71691345534811) internal successors, (29541), 10874 states have internal predecessors, (29541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 29541 transitions. [2021-08-06 13:55:49,000 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 29541 transitions. Word has length 114 [2021-08-06 13:55:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:49,000 INFO L470 AbstractCegarLoop]: Abstraction has 10875 states and 29541 transitions. [2021-08-06 13:55:49,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 29541 transitions. [2021-08-06 13:55:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:49,012 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:49,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:49,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-06 13:55:49,013 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)] === [2021-08-06 13:55:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash 830751774, now seen corresponding path program 51 times [2021-08-06 13:55:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:49,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869726059] [2021-08-06 13:55:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:49,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:49,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:49,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869726059] [2021-08-06 13:55:49,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869726059] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:49,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:49,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:49,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871146891] [2021-08-06 13:55:49,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:49,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:49,458 INFO L87 Difference]: Start difference. First operand 10875 states and 29541 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:50,984 INFO L93 Difference]: Finished difference Result 27203 states and 71889 transitions. [2021-08-06 13:55:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:50,985 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 [2021-08-06 13:55:50,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:51,034 INFO L225 Difference]: With dead ends: 27203 [2021-08-06 13:55:51,034 INFO L226 Difference]: Without dead ends: 27203 [2021-08-06 13:55:51,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1250.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:51,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27203 states. [2021-08-06 13:55:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27203 to 10847. [2021-08-06 13:55:51,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10847 states, 10845 states have (on average 2.716366989396035) internal successors, (29459), 10846 states have internal predecessors, (29459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10847 states to 10847 states and 29459 transitions. [2021-08-06 13:55:51,387 INFO L78 Accepts]: Start accepts. Automaton has 10847 states and 29459 transitions. Word has length 114 [2021-08-06 13:55:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:51,388 INFO L470 AbstractCegarLoop]: Abstraction has 10847 states and 29459 transitions. [2021-08-06 13:55:51,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:51,388 INFO L276 IsEmpty]: Start isEmpty. Operand 10847 states and 29459 transitions. [2021-08-06 13:55:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:51,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:51,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:51,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-06 13:55:51,401 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)] === [2021-08-06 13:55:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:51,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1603816800, now seen corresponding path program 13 times [2021-08-06 13:55:51,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:51,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596322372] [2021-08-06 13:55:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:51,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:52,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:52,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:52,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596322372] [2021-08-06 13:55:52,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596322372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:52,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:52,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:55:52,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170927529] [2021-08-06 13:55:52,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:55:52,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:52,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:55:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:55:52,457 INFO L87 Difference]: Start difference. First operand 10847 states and 29459 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:57,260 INFO L93 Difference]: Finished difference Result 16631 states and 44611 transitions. [2021-08-06 13:55:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-06 13:55:57,260 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:57,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:57,286 INFO L225 Difference]: With dead ends: 16631 [2021-08-06 13:55:57,287 INFO L226 Difference]: Without dead ends: 16545 [2021-08-06 13:55:57,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 3195.0ms TimeCoverageRelationStatistics Valid=1255, Invalid=4597, Unknown=0, NotChecked=0, Total=5852 [2021-08-06 13:55:57,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16545 states. [2021-08-06 13:55:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16545 to 10945. [2021-08-06 13:55:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10945 states, 10943 states have (on average 2.7182673855432697) internal successors, (29746), 10944 states have internal predecessors, (29746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10945 states to 10945 states and 29746 transitions. [2021-08-06 13:55:57,473 INFO L78 Accepts]: Start accepts. Automaton has 10945 states and 29746 transitions. Word has length 114 [2021-08-06 13:55:57,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:57,473 INFO L470 AbstractCegarLoop]: Abstraction has 10945 states and 29746 transitions. [2021-08-06 13:55:57,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:57,473 INFO L276 IsEmpty]: Start isEmpty. Operand 10945 states and 29746 transitions. [2021-08-06 13:55:57,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:57,486 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:57,486 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:57,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-06 13:55:57,486 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)] === [2021-08-06 13:55:57,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:57,486 INFO L82 PathProgramCache]: Analyzing trace with hash -379589822, now seen corresponding path program 52 times [2021-08-06 13:55:57,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:57,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821112807] [2021-08-06 13:55:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:57,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:55:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:55:57,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:55:57,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821112807] [2021-08-06 13:55:57,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821112807] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:55:57,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:55:57,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:55:57,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441856593] [2021-08-06 13:55:57,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:55:57,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:55:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:55:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:55:57,915 INFO L87 Difference]: Start difference. First operand 10945 states and 29746 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:55:59,473 INFO L93 Difference]: Finished difference Result 27670 states and 73355 transitions. [2021-08-06 13:55:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:55:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:55:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:55:59,519 INFO L225 Difference]: With dead ends: 27670 [2021-08-06 13:55:59,519 INFO L226 Difference]: Without dead ends: 27670 [2021-08-06 13:55:59,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1291.2ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:55:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27670 states. [2021-08-06 13:55:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27670 to 10959. [2021-08-06 13:55:59,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10959 states, 10957 states have (on average 2.7185360956466185) internal successors, (29787), 10958 states have internal predecessors, (29787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10959 states to 10959 states and 29787 transitions. [2021-08-06 13:55:59,797 INFO L78 Accepts]: Start accepts. Automaton has 10959 states and 29787 transitions. Word has length 114 [2021-08-06 13:55:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:55:59,798 INFO L470 AbstractCegarLoop]: Abstraction has 10959 states and 29787 transitions. [2021-08-06 13:55:59,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:55:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10959 states and 29787 transitions. [2021-08-06 13:55:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:55:59,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:55:59,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:55:59,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-06 13:55:59,811 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)] === [2021-08-06 13:55:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:55:59,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1311608450, now seen corresponding path program 53 times [2021-08-06 13:55:59,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:55:59,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657258619] [2021-08-06 13:55:59,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:55:59,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:55:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:00,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:00,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657258619] [2021-08-06 13:56:00,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657258619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:00,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:00,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:00,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526772918] [2021-08-06 13:56:00,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:00,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:00,259 INFO L87 Difference]: Start difference. First operand 10959 states and 29787 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:01,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:01,783 INFO L93 Difference]: Finished difference Result 22876 states and 60847 transitions. [2021-08-06 13:56:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:01,783 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:01,817 INFO L225 Difference]: With dead ends: 22876 [2021-08-06 13:56:01,817 INFO L226 Difference]: Without dead ends: 22876 [2021-08-06 13:56:01,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1297.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22876 states. [2021-08-06 13:56:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22876 to 10763. [2021-08-06 13:56:02,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10763 states, 10761 states have (on average 2.7147105287612674) internal successors, (29213), 10762 states have internal predecessors, (29213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:02,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10763 states to 10763 states and 29213 transitions. [2021-08-06 13:56:02,048 INFO L78 Accepts]: Start accepts. Automaton has 10763 states and 29213 transitions. Word has length 114 [2021-08-06 13:56:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:02,048 INFO L470 AbstractCegarLoop]: Abstraction has 10763 states and 29213 transitions. [2021-08-06 13:56:02,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 10763 states and 29213 transitions. [2021-08-06 13:56:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:02,061 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:02,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:02,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-06 13:56:02,061 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)] === [2021-08-06 13:56:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1611654754, now seen corresponding path program 54 times [2021-08-06 13:56:02,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:02,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970683458] [2021-08-06 13:56:02,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:02,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:02,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:02,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970683458] [2021-08-06 13:56:02,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970683458] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:02,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:02,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:02,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891288771] [2021-08-06 13:56:02,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:02,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:02,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:02,522 INFO L87 Difference]: Start difference. First operand 10763 states and 29213 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:04,046 INFO L93 Difference]: Finished difference Result 23739 states and 63737 transitions. [2021-08-06 13:56:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:04,047 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 [2021-08-06 13:56:04,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:04,080 INFO L225 Difference]: With dead ends: 23739 [2021-08-06 13:56:04,080 INFO L226 Difference]: Without dead ends: 23739 [2021-08-06 13:56:04,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1200.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23739 states. [2021-08-06 13:56:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23739 to 10805. [2021-08-06 13:56:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 10803 states have (on average 2.715541979079885) internal successors, (29336), 10804 states have internal predecessors, (29336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:04,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 29336 transitions. [2021-08-06 13:56:04,299 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 29336 transitions. Word has length 114 [2021-08-06 13:56:04,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:04,299 INFO L470 AbstractCegarLoop]: Abstraction has 10805 states and 29336 transitions. [2021-08-06 13:56:04,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 29336 transitions. [2021-08-06 13:56:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:04,312 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:04,313 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] [2021-08-06 13:56:04,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-06 13:56:04,313 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)] === [2021-08-06 13:56:04,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:04,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1612293054, now seen corresponding path program 55 times [2021-08-06 13:56:04,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:04,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929114743] [2021-08-06 13:56:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:04,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:04,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:04,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929114743] [2021-08-06 13:56:04,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929114743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:04,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:04,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:04,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951278145] [2021-08-06 13:56:04,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:04,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:04,803 INFO L87 Difference]: Start difference. First operand 10805 states and 29336 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:06,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:06,347 INFO L93 Difference]: Finished difference Result 23907 states and 64061 transitions. [2021-08-06 13:56:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:06,348 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:06,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:06,387 INFO L225 Difference]: With dead ends: 23907 [2021-08-06 13:56:06,387 INFO L226 Difference]: Without dead ends: 23907 [2021-08-06 13:56:06,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1280.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23907 states. [2021-08-06 13:56:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23907 to 10819. [2021-08-06 13:56:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10817 states have (on average 2.715817694369973) internal successors, (29377), 10818 states have internal predecessors, (29377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 29377 transitions. [2021-08-06 13:56:06,732 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 29377 transitions. Word has length 114 [2021-08-06 13:56:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:06,732 INFO L470 AbstractCegarLoop]: Abstraction has 10819 states and 29377 transitions. [2021-08-06 13:56:06,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 29377 transitions. [2021-08-06 13:56:06,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:06,745 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:06,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:06,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-06 13:56:06,745 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)] === [2021-08-06 13:56:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1443554144, now seen corresponding path program 56 times [2021-08-06 13:56:06,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:06,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699280829] [2021-08-06 13:56:06,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:06,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:07,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:07,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:07,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699280829] [2021-08-06 13:56:07,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699280829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:07,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:07,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:07,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219713321] [2021-08-06 13:56:07,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:07,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:07,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:07,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:07,178 INFO L87 Difference]: Start difference. First operand 10819 states and 29377 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:08,647 INFO L93 Difference]: Finished difference Result 22761 states and 60347 transitions. [2021-08-06 13:56:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:08,685 INFO L225 Difference]: With dead ends: 22761 [2021-08-06 13:56:08,685 INFO L226 Difference]: Without dead ends: 22761 [2021-08-06 13:56:08,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1201.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:08,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22761 states. [2021-08-06 13:56:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22761 to 10637. [2021-08-06 13:56:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10637 states, 10635 states have (on average 2.712176774800188) internal successors, (28844), 10636 states have internal predecessors, (28844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10637 states to 10637 states and 28844 transitions. [2021-08-06 13:56:08,918 INFO L78 Accepts]: Start accepts. Automaton has 10637 states and 28844 transitions. Word has length 114 [2021-08-06 13:56:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:08,918 INFO L470 AbstractCegarLoop]: Abstraction has 10637 states and 28844 transitions. [2021-08-06 13:56:08,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:08,918 INFO L276 IsEmpty]: Start isEmpty. Operand 10637 states and 28844 transitions. [2021-08-06 13:56:08,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:08,931 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:08,931 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] [2021-08-06 13:56:08,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-06 13:56:08,931 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)] === [2021-08-06 13:56:08,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:08,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1356172868, now seen corresponding path program 57 times [2021-08-06 13:56:08,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184615832] [2021-08-06 13:56:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:08,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:09,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:09,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184615832] [2021-08-06 13:56:09,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184615832] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:09,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:09,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:09,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001831939] [2021-08-06 13:56:09,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:09,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:09,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:09,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:09,405 INFO L87 Difference]: Start difference. First operand 10637 states and 28844 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:10,782 INFO L93 Difference]: Finished difference Result 16410 states and 43732 transitions. [2021-08-06 13:56:10,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:10,782 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:10,807 INFO L225 Difference]: With dead ends: 16410 [2021-08-06 13:56:10,808 INFO L226 Difference]: Without dead ends: 16410 [2021-08-06 13:56:10,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1174.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:10,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2021-08-06 13:56:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 9027. [2021-08-06 13:56:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9027 states, 9025 states have (on average 2.6945152354570636) internal successors, (24318), 9026 states have internal predecessors, (24318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9027 states to 9027 states and 24318 transitions. [2021-08-06 13:56:10,975 INFO L78 Accepts]: Start accepts. Automaton has 9027 states and 24318 transitions. Word has length 114 [2021-08-06 13:56:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:10,975 INFO L470 AbstractCegarLoop]: Abstraction has 9027 states and 24318 transitions. [2021-08-06 13:56:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 9027 states and 24318 transitions. [2021-08-06 13:56:10,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:10,986 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:10,986 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] [2021-08-06 13:56:10,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-06 13:56:10,986 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)] === [2021-08-06 13:56:10,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:10,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1980665218, now seen corresponding path program 14 times [2021-08-06 13:56:10,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:10,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525684013] [2021-08-06 13:56:10,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:10,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:11,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:11,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525684013] [2021-08-06 13:56:11,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525684013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:11,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:11,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:56:11,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674498072] [2021-08-06 13:56:11,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:56:11,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:56:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:56:11,963 INFO L87 Difference]: Start difference. First operand 9027 states and 24318 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:16,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:16,147 INFO L93 Difference]: Finished difference Result 14385 states and 38564 transitions. [2021-08-06 13:56:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-06 13:56:16,147 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:16,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:16,169 INFO L225 Difference]: With dead ends: 14385 [2021-08-06 13:56:16,169 INFO L226 Difference]: Without dead ends: 14303 [2021-08-06 13:56:16,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 2918.6ms TimeCoverageRelationStatistics Valid=1173, Invalid=4229, Unknown=0, NotChecked=0, Total=5402 [2021-08-06 13:56:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14303 states. [2021-08-06 13:56:16,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14303 to 10665. [2021-08-06 13:56:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10665 states, 10663 states have (on average 2.7127450060958456) internal successors, (28926), 10664 states have internal predecessors, (28926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10665 states to 10665 states and 28926 transitions. [2021-08-06 13:56:16,343 INFO L78 Accepts]: Start accepts. Automaton has 10665 states and 28926 transitions. Word has length 114 [2021-08-06 13:56:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:16,343 INFO L470 AbstractCegarLoop]: Abstraction has 10665 states and 28926 transitions. [2021-08-06 13:56:16,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:16,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10665 states and 28926 transitions. [2021-08-06 13:56:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:16,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:16,392 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] [2021-08-06 13:56:16,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-06 13:56:16,393 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)] === [2021-08-06 13:56:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:16,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1090075100, now seen corresponding path program 58 times [2021-08-06 13:56:16,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:16,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187928298] [2021-08-06 13:56:16,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:16,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:16,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:16,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187928298] [2021-08-06 13:56:16,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187928298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:16,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:16,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:16,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402820628] [2021-08-06 13:56:16,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:16,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:16,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:16,864 INFO L87 Difference]: Start difference. First operand 10665 states and 28926 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:18,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:18,382 INFO L93 Difference]: Finished difference Result 25675 states and 68248 transitions. [2021-08-06 13:56:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:18,383 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 [2021-08-06 13:56:18,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:18,428 INFO L225 Difference]: With dead ends: 25675 [2021-08-06 13:56:18,428 INFO L226 Difference]: Without dead ends: 25675 [2021-08-06 13:56:18,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1274.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25675 states. [2021-08-06 13:56:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25675 to 10777. [2021-08-06 13:56:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10777 states, 10775 states have (on average 2.7149883990719257) internal successors, (29254), 10776 states have internal predecessors, (29254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 29254 transitions. [2021-08-06 13:56:18,677 INFO L78 Accepts]: Start accepts. Automaton has 10777 states and 29254 transitions. Word has length 114 [2021-08-06 13:56:18,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:18,677 INFO L470 AbstractCegarLoop]: Abstraction has 10777 states and 29254 transitions. [2021-08-06 13:56:18,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 10777 states and 29254 transitions. [2021-08-06 13:56:18,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:18,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:18,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:18,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-06 13:56:18,690 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)] === [2021-08-06 13:56:18,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:18,690 INFO L82 PathProgramCache]: Analyzing trace with hash -19055612, now seen corresponding path program 59 times [2021-08-06 13:56:18,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:18,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099027709] [2021-08-06 13:56:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:18,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:19,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:19,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099027709] [2021-08-06 13:56:19,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099027709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:19,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:19,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:19,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416784650] [2021-08-06 13:56:19,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:19,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:19,090 INFO L87 Difference]: Start difference. First operand 10777 states and 29254 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:20,572 INFO L93 Difference]: Finished difference Result 28126 states and 74566 transitions. [2021-08-06 13:56:20,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:20,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:20,622 INFO L225 Difference]: With dead ends: 28126 [2021-08-06 13:56:20,622 INFO L226 Difference]: Without dead ends: 28126 [2021-08-06 13:56:20,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1234.9ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:20,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28126 states. [2021-08-06 13:56:20,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28126 to 10805. [2021-08-06 13:56:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10805 states, 10803 states have (on average 2.715541979079885) internal successors, (29336), 10804 states have internal predecessors, (29336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10805 states to 10805 states and 29336 transitions. [2021-08-06 13:56:20,894 INFO L78 Accepts]: Start accepts. Automaton has 10805 states and 29336 transitions. Word has length 114 [2021-08-06 13:56:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:20,894 INFO L470 AbstractCegarLoop]: Abstraction has 10805 states and 29336 transitions. [2021-08-06 13:56:20,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10805 states and 29336 transitions. [2021-08-06 13:56:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:20,907 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:20,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:20,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-06 13:56:20,907 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)] === [2021-08-06 13:56:20,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:20,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1258175710, now seen corresponding path program 60 times [2021-08-06 13:56:20,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:20,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680889133] [2021-08-06 13:56:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:20,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:21,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:21,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680889133] [2021-08-06 13:56:21,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680889133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:21,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:21,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:21,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732056063] [2021-08-06 13:56:21,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:21,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:21,355 INFO L87 Difference]: Start difference. First operand 10805 states and 29336 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:22,863 INFO L93 Difference]: Finished difference Result 24906 states and 65645 transitions. [2021-08-06 13:56:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:22,863 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:22,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:22,906 INFO L225 Difference]: With dead ends: 24906 [2021-08-06 13:56:22,907 INFO L226 Difference]: Without dead ends: 24906 [2021-08-06 13:56:22,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1288.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24906 states. [2021-08-06 13:56:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24906 to 10721. [2021-08-06 13:56:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10719 states have (on average 2.7138725627390614) internal successors, (29090), 10720 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 29090 transitions. [2021-08-06 13:56:23,170 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 29090 transitions. Word has length 114 [2021-08-06 13:56:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:23,170 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 29090 transitions. [2021-08-06 13:56:23,170 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) [2021-08-06 13:56:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 29090 transitions. [2021-08-06 13:56:23,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:23,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:23,183 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:23,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-06 13:56:23,183 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)] === [2021-08-06 13:56:23,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:23,183 INFO L82 PathProgramCache]: Analyzing trace with hash 892192032, now seen corresponding path program 15 times [2021-08-06 13:56:23,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:23,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207311743] [2021-08-06 13:56:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:23,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:24,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:24,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207311743] [2021-08-06 13:56:24,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207311743] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:24,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:24,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:56:24,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544484115] [2021-08-06 13:56:24,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:56:24,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:24,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:56:24,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:56:24,115 INFO L87 Difference]: Start difference. First operand 10721 states and 29090 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:28,802 INFO L93 Difference]: Finished difference Result 16942 states and 45431 transitions. [2021-08-06 13:56:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-06 13:56:28,802 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:28,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:28,829 INFO L225 Difference]: With dead ends: 16942 [2021-08-06 13:56:28,830 INFO L226 Difference]: Without dead ends: 16860 [2021-08-06 13:56:28,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 3065.9ms TimeCoverageRelationStatistics Valid=1260, Invalid=4592, Unknown=0, NotChecked=0, Total=5852 [2021-08-06 13:56:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16860 states. [2021-08-06 13:56:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16860 to 10679. [2021-08-06 13:56:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10679 states, 10677 states have (on average 2.713028004121008) internal successors, (28967), 10678 states have internal predecessors, (28967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10679 states to 10679 states and 28967 transitions. [2021-08-06 13:56:29,022 INFO L78 Accepts]: Start accepts. Automaton has 10679 states and 28967 transitions. Word has length 114 [2021-08-06 13:56:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:29,022 INFO L470 AbstractCegarLoop]: Abstraction has 10679 states and 28967 transitions. [2021-08-06 13:56:29,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand 10679 states and 28967 transitions. [2021-08-06 13:56:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:29,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:29,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:29,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-06 13:56:29,035 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)] === [2021-08-06 13:56:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2116419010, now seen corresponding path program 61 times [2021-08-06 13:56:29,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:29,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426739375] [2021-08-06 13:56:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:29,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:29,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:29,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426739375] [2021-08-06 13:56:29,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426739375] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:29,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:29,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:29,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193065567] [2021-08-06 13:56:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:29,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:29,475 INFO L87 Difference]: Start difference. First operand 10679 states and 28967 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:30,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:30,921 INFO L93 Difference]: Finished difference Result 25847 states and 68479 transitions. [2021-08-06 13:56:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:30,966 INFO L225 Difference]: With dead ends: 25847 [2021-08-06 13:56:30,966 INFO L226 Difference]: Without dead ends: 25847 [2021-08-06 13:56:30,966 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1215.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25847 states. [2021-08-06 13:56:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25847 to 10721. [2021-08-06 13:56:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10721 states, 10719 states have (on average 2.7138725627390614) internal successors, (29090), 10720 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10721 states to 10721 states and 29090 transitions. [2021-08-06 13:56:31,219 INFO L78 Accepts]: Start accepts. Automaton has 10721 states and 29090 transitions. Word has length 114 [2021-08-06 13:56:31,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:31,219 INFO L470 AbstractCegarLoop]: Abstraction has 10721 states and 29090 transitions. [2021-08-06 13:56:31,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 10721 states and 29090 transitions. [2021-08-06 13:56:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:31,232 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:31,232 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] [2021-08-06 13:56:31,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-06 13:56:31,233 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)] === [2021-08-06 13:56:31,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:31,233 INFO L82 PathProgramCache]: Analyzing trace with hash 877298912, now seen corresponding path program 62 times [2021-08-06 13:56:31,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:31,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156477745] [2021-08-06 13:56:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:31,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:31,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:31,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156477745] [2021-08-06 13:56:31,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156477745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:31,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:31,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:31,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433774979] [2021-08-06 13:56:31,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:31,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:31,645 INFO L87 Difference]: Start difference. First operand 10721 states and 29090 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:33,117 INFO L93 Difference]: Finished difference Result 25101 states and 65962 transitions. [2021-08-06 13:56:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:33,164 INFO L225 Difference]: With dead ends: 25101 [2021-08-06 13:56:33,164 INFO L226 Difference]: Without dead ends: 25101 [2021-08-06 13:56:33,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1254.8ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:33,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2021-08-06 13:56:33,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 10693. [2021-08-06 13:56:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10693 states, 10691 states have (on average 2.7133102609671687) internal successors, (29008), 10692 states have internal predecessors, (29008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10693 states to 10693 states and 29008 transitions. [2021-08-06 13:56:33,416 INFO L78 Accepts]: Start accepts. Automaton has 10693 states and 29008 transitions. Word has length 114 [2021-08-06 13:56:33,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:33,417 INFO L470 AbstractCegarLoop]: Abstraction has 10693 states and 29008 transitions. [2021-08-06 13:56:33,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 10693 states and 29008 transitions. [2021-08-06 13:56:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:33,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:33,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:33,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-06 13:56:33,430 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)] === [2021-08-06 13:56:33,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1557269662, now seen corresponding path program 16 times [2021-08-06 13:56:33,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:33,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996418559] [2021-08-06 13:56:33,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:33,430 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:34,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:34,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996418559] [2021-08-06 13:56:34,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996418559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:34,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:34,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:56:34,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818360129] [2021-08-06 13:56:34,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:56:34,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:56:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:56:34,356 INFO L87 Difference]: Start difference. First operand 10693 states and 29008 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:39,124 INFO L93 Difference]: Finished difference Result 16198 states and 43313 transitions. [2021-08-06 13:56:39,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-08-06 13:56:39,124 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:39,149 INFO L225 Difference]: With dead ends: 16198 [2021-08-06 13:56:39,149 INFO L226 Difference]: Without dead ends: 16112 [2021-08-06 13:56:39,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 3232.3ms TimeCoverageRelationStatistics Valid=1348, Invalid=4972, Unknown=0, NotChecked=0, Total=6320 [2021-08-06 13:56:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16112 states. [2021-08-06 13:56:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16112 to 10399. [2021-08-06 13:56:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10399 states, 10397 states have (on average 2.707223237472348) internal successors, (28147), 10398 states have internal predecessors, (28147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10399 states to 10399 states and 28147 transitions. [2021-08-06 13:56:39,358 INFO L78 Accepts]: Start accepts. Automaton has 10399 states and 28147 transitions. Word has length 114 [2021-08-06 13:56:39,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:39,358 INFO L470 AbstractCegarLoop]: Abstraction has 10399 states and 28147 transitions. [2021-08-06 13:56:39,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:39,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10399 states and 28147 transitions. [2021-08-06 13:56:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:39,371 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:39,371 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:39,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-06 13:56:39,371 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)] === [2021-08-06 13:56:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:39,371 INFO L82 PathProgramCache]: Analyzing trace with hash -333042684, now seen corresponding path program 63 times [2021-08-06 13:56:39,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:39,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801977742] [2021-08-06 13:56:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:39,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:39,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:39,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801977742] [2021-08-06 13:56:39,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801977742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:39,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:39,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:39,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704639584] [2021-08-06 13:56:39,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:39,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:39,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:39,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:39,801 INFO L87 Difference]: Start difference. First operand 10399 states and 28147 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:41,232 INFO L93 Difference]: Finished difference Result 25568 states and 67428 transitions. [2021-08-06 13:56:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:41,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:41,275 INFO L225 Difference]: With dead ends: 25568 [2021-08-06 13:56:41,275 INFO L226 Difference]: Without dead ends: 25568 [2021-08-06 13:56:41,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1220.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:41,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25568 states. [2021-08-06 13:56:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25568 to 10413. [2021-08-06 13:56:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10413 states, 10411 states have (on average 2.7075208913649025) internal successors, (28188), 10412 states have internal predecessors, (28188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10413 states to 10413 states and 28188 transitions. [2021-08-06 13:56:41,516 INFO L78 Accepts]: Start accepts. Automaton has 10413 states and 28188 transitions. Word has length 114 [2021-08-06 13:56:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:41,516 INFO L470 AbstractCegarLoop]: Abstraction has 10413 states and 28188 transitions. [2021-08-06 13:56:41,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10413 states and 28188 transitions. [2021-08-06 13:56:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:41,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:41,529 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] [2021-08-06 13:56:41,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-06 13:56:41,529 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)] === [2021-08-06 13:56:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1265061312, now seen corresponding path program 64 times [2021-08-06 13:56:41,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:41,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755432466] [2021-08-06 13:56:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:41,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:42,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:42,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:42,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755432466] [2021-08-06 13:56:42,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755432466] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:42,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:42,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466456804] [2021-08-06 13:56:42,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:42,008 INFO L87 Difference]: Start difference. First operand 10413 states and 28188 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:43,473 INFO L93 Difference]: Finished difference Result 20774 states and 54920 transitions. [2021-08-06 13:56:43,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:43,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:43,507 INFO L225 Difference]: With dead ends: 20774 [2021-08-06 13:56:43,507 INFO L226 Difference]: Without dead ends: 20774 [2021-08-06 13:56:43,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1274.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:43,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20774 states. [2021-08-06 13:56:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20774 to 10217. [2021-08-06 13:56:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10217 states, 10215 states have (on average 2.703279490944689) internal successors, (27614), 10216 states have internal predecessors, (27614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10217 states to 10217 states and 27614 transitions. [2021-08-06 13:56:43,716 INFO L78 Accepts]: Start accepts. Automaton has 10217 states and 27614 transitions. Word has length 114 [2021-08-06 13:56:43,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:43,716 INFO L470 AbstractCegarLoop]: Abstraction has 10217 states and 27614 transitions. [2021-08-06 13:56:43,716 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) [2021-08-06 13:56:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10217 states and 27614 transitions. [2021-08-06 13:56:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:43,729 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:43,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:43,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-06 13:56:43,730 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)] === [2021-08-06 13:56:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:43,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1658201892, now seen corresponding path program 65 times [2021-08-06 13:56:43,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:43,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851320698] [2021-08-06 13:56:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:43,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:44,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:44,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851320698] [2021-08-06 13:56:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851320698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:44,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:44,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:44,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443146430] [2021-08-06 13:56:44,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:44,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:44,142 INFO L87 Difference]: Start difference. First operand 10217 states and 27614 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:45,678 INFO L93 Difference]: Finished difference Result 30171 states and 80358 transitions. [2021-08-06 13:56:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:45,678 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 [2021-08-06 13:56:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:45,731 INFO L225 Difference]: With dead ends: 30171 [2021-08-06 13:56:45,732 INFO L226 Difference]: Without dead ends: 30171 [2021-08-06 13:56:45,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1220.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30171 states. [2021-08-06 13:56:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30171 to 10301. [2021-08-06 13:56:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10301 states, 10299 states have (on average 2.705117001650646) internal successors, (27860), 10300 states have internal predecessors, (27860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10301 states to 10301 states and 27860 transitions. [2021-08-06 13:56:46,040 INFO L78 Accepts]: Start accepts. Automaton has 10301 states and 27860 transitions. Word has length 114 [2021-08-06 13:56:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:46,040 INFO L470 AbstractCegarLoop]: Abstraction has 10301 states and 27860 transitions. [2021-08-06 13:56:46,041 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) [2021-08-06 13:56:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10301 states and 27860 transitions. [2021-08-06 13:56:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:46,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:46,056 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] [2021-08-06 13:56:46,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-06 13:56:46,057 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)] === [2021-08-06 13:56:46,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:46,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1565745916, now seen corresponding path program 66 times [2021-08-06 13:56:46,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:46,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114054835] [2021-08-06 13:56:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:46,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:46,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:46,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114054835] [2021-08-06 13:56:46,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114054835] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:46,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:46,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:46,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794490447] [2021-08-06 13:56:46,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:46,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:46,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:46,493 INFO L87 Difference]: Start difference. First operand 10301 states and 27860 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:47,987 INFO L93 Difference]: Finished difference Result 30339 states and 80682 transitions. [2021-08-06 13:56:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:47,988 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:48,046 INFO L225 Difference]: With dead ends: 30339 [2021-08-06 13:56:48,047 INFO L226 Difference]: Without dead ends: 30339 [2021-08-06 13:56:48,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1234.7ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:48,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30339 states. [2021-08-06 13:56:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30339 to 10329. [2021-08-06 13:56:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10329 states, 10327 states have (on average 2.705722862399535) internal successors, (27942), 10328 states have internal predecessors, (27942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10329 states to 10329 states and 27942 transitions. [2021-08-06 13:56:48,320 INFO L78 Accepts]: Start accepts. Automaton has 10329 states and 27942 transitions. Word has length 114 [2021-08-06 13:56:48,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:48,320 INFO L470 AbstractCegarLoop]: Abstraction has 10329 states and 27942 transitions. [2021-08-06 13:56:48,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:48,320 INFO L276 IsEmpty]: Start isEmpty. Operand 10329 states and 27942 transitions. [2021-08-06 13:56:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:48,332 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:48,332 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] [2021-08-06 13:56:48,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-06 13:56:48,333 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)] === [2021-08-06 13:56:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:48,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1490101282, now seen corresponding path program 67 times [2021-08-06 13:56:48,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:48,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024330211] [2021-08-06 13:56:48,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:48,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:48,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:48,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024330211] [2021-08-06 13:56:48,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024330211] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:48,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:48,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:48,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567879722] [2021-08-06 13:56:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:48,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:48,789 INFO L87 Difference]: Start difference. First operand 10329 states and 27942 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:50,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:50,255 INFO L93 Difference]: Finished difference Result 29193 states and 76968 transitions. [2021-08-06 13:56:50,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:50,305 INFO L225 Difference]: With dead ends: 29193 [2021-08-06 13:56:50,305 INFO L226 Difference]: Without dead ends: 29193 [2021-08-06 13:56:50,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1222.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29193 states. [2021-08-06 13:56:50,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29193 to 10245. [2021-08-06 13:56:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10243 states have (on average 2.703895343161183) internal successors, (27696), 10244 states have internal predecessors, (27696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 27696 transitions. [2021-08-06 13:56:50,632 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 27696 transitions. Word has length 114 [2021-08-06 13:56:50,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:50,632 INFO L470 AbstractCegarLoop]: Abstraction has 10245 states and 27696 transitions. [2021-08-06 13:56:50,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 27696 transitions. [2021-08-06 13:56:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:50,646 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:50,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:50,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-06 13:56:50,646 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)] === [2021-08-06 13:56:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:50,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1402720006, now seen corresponding path program 68 times [2021-08-06 13:56:50,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:50,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281356408] [2021-08-06 13:56:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:50,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:51,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:51,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281356408] [2021-08-06 13:56:51,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281356408] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:51,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:51,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:51,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337525198] [2021-08-06 13:56:51,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:51,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:51,065 INFO L87 Difference]: Start difference. First operand 10245 states and 27696 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:52,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:52,492 INFO L93 Difference]: Finished difference Result 22842 states and 60353 transitions. [2021-08-06 13:56:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:52,492 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:52,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:52,527 INFO L225 Difference]: With dead ends: 22842 [2021-08-06 13:56:52,528 INFO L226 Difference]: Without dead ends: 22842 [2021-08-06 13:56:52,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1190.4ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:52,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22842 states. [2021-08-06 13:56:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22842 to 10189. [2021-08-06 13:56:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10189 states, 10187 states have (on average 2.702660253263964) internal successors, (27532), 10188 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10189 states to 10189 states and 27532 transitions. [2021-08-06 13:56:52,749 INFO L78 Accepts]: Start accepts. Automaton has 10189 states and 27532 transitions. Word has length 114 [2021-08-06 13:56:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:52,749 INFO L470 AbstractCegarLoop]: Abstraction has 10189 states and 27532 transitions. [2021-08-06 13:56:52,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 10189 states and 27532 transitions. [2021-08-06 13:56:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:52,763 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:52,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-06 13:56:52,763 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)] === [2021-08-06 13:56:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1063517380, now seen corresponding path program 69 times [2021-08-06 13:56:52,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:52,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630871916] [2021-08-06 13:56:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:52,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:53,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:53,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630871916] [2021-08-06 13:56:53,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630871916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:53,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:53,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:53,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816470826] [2021-08-06 13:56:53,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:53,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:53,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:53,273 INFO L87 Difference]: Start difference. First operand 10189 states and 27532 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:54,718 INFO L93 Difference]: Finished difference Result 21609 states and 57728 transitions. [2021-08-06 13:56:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:54,753 INFO L225 Difference]: With dead ends: 21609 [2021-08-06 13:56:54,753 INFO L226 Difference]: Without dead ends: 21609 [2021-08-06 13:56:54,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1240.1ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:54,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21609 states. [2021-08-06 13:56:54,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21609 to 10245. [2021-08-06 13:56:54,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10245 states, 10243 states have (on average 2.703895343161183) internal successors, (27696), 10244 states have internal predecessors, (27696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 27696 transitions. [2021-08-06 13:56:54,968 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 27696 transitions. Word has length 114 [2021-08-06 13:56:54,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:54,968 INFO L470 AbstractCegarLoop]: Abstraction has 10245 states and 27696 transitions. [2021-08-06 13:56:54,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:54,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 27696 transitions. [2021-08-06 13:56:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:54,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:54,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:54,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-06 13:56:54,981 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)] === [2021-08-06 13:56:54,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:54,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2134536868, now seen corresponding path program 70 times [2021-08-06 13:56:54,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:54,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633060511] [2021-08-06 13:56:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:54,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:55,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:55,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:55,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633060511] [2021-08-06 13:56:55,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633060511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:55,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:55,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:55,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809810004] [2021-08-06 13:56:55,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:55,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:55,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:55,431 INFO L87 Difference]: Start difference. First operand 10245 states and 27696 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:56,919 INFO L93 Difference]: Finished difference Result 21777 states and 58052 transitions. [2021-08-06 13:56:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:56,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:56,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:56,955 INFO L225 Difference]: With dead ends: 21777 [2021-08-06 13:56:56,956 INFO L226 Difference]: Without dead ends: 21777 [2021-08-06 13:56:56,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1232.6ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21777 states. [2021-08-06 13:56:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21777 to 10259. [2021-08-06 13:56:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10259 states, 10257 states have (on average 2.704202008384518) internal successors, (27737), 10258 states have internal predecessors, (27737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10259 states to 10259 states and 27737 transitions. [2021-08-06 13:56:57,154 INFO L78 Accepts]: Start accepts. Automaton has 10259 states and 27737 transitions. Word has length 114 [2021-08-06 13:56:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:57,154 INFO L470 AbstractCegarLoop]: Abstraction has 10259 states and 27737 transitions. [2021-08-06 13:56:57,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10259 states and 27737 transitions. [2021-08-06 13:56:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:57,165 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:57,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:56:57,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-06 13:56:57,166 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)] === [2021-08-06 13:56:57,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:57,166 INFO L82 PathProgramCache]: Analyzing trace with hash 895416770, now seen corresponding path program 71 times [2021-08-06 13:56:57,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:57,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850482976] [2021-08-06 13:56:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:57,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:57,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:57,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850482976] [2021-08-06 13:56:57,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850482976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:57,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:57,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:57,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742021035] [2021-08-06 13:56:57,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:57,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:57,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:57,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:57,572 INFO L87 Difference]: Start difference. First operand 10259 states and 27737 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:56:59,042 INFO L93 Difference]: Finished difference Result 20631 states and 54338 transitions. [2021-08-06 13:56:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:56:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:56:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:56:59,071 INFO L225 Difference]: With dead ends: 20631 [2021-08-06 13:56:59,072 INFO L226 Difference]: Without dead ends: 20631 [2021-08-06 13:56:59,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1197.2ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:56:59,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20631 states. [2021-08-06 13:56:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20631 to 10077. [2021-08-06 13:56:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10077 states, 10075 states have (on average 2.70014888337469) internal successors, (27204), 10076 states have internal predecessors, (27204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10077 states to 10077 states and 27204 transitions. [2021-08-06 13:56:59,267 INFO L78 Accepts]: Start accepts. Automaton has 10077 states and 27204 transitions. Word has length 114 [2021-08-06 13:56:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:56:59,267 INFO L470 AbstractCegarLoop]: Abstraction has 10077 states and 27204 transitions. [2021-08-06 13:56:59,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:56:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 10077 states and 27204 transitions. [2021-08-06 13:56:59,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:56:59,280 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:56:59,280 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] [2021-08-06 13:56:59,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-06 13:56:59,280 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)] === [2021-08-06 13:56:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:56:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 808035494, now seen corresponding path program 72 times [2021-08-06 13:56:59,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:56:59,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313168929] [2021-08-06 13:56:59,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:56:59,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:56:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:56:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:56:59,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:56:59,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313168929] [2021-08-06 13:56:59,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313168929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:56:59,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:56:59,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:56:59,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031359345] [2021-08-06 13:56:59,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:56:59,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:56:59,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:56:59,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:56:59,728 INFO L87 Difference]: Start difference. First operand 10077 states and 27204 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:01,153 INFO L93 Difference]: Finished difference Result 20769 states and 54932 transitions. [2021-08-06 13:57:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:01,153 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 [2021-08-06 13:57:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:01,188 INFO L225 Difference]: With dead ends: 20769 [2021-08-06 13:57:01,188 INFO L226 Difference]: Without dead ends: 20769 [2021-08-06 13:57:01,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1185.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:01,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20769 states. [2021-08-06 13:57:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20769 to 10049. [2021-08-06 13:57:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 10047 states have (on average 2.6995122922265353) internal successors, (27122), 10048 states have internal predecessors, (27122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 27122 transitions. [2021-08-06 13:57:01,394 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 27122 transitions. Word has length 114 [2021-08-06 13:57:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:01,395 INFO L470 AbstractCegarLoop]: Abstraction has 10049 states and 27122 transitions. [2021-08-06 13:57:01,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 27122 transitions. [2021-08-06 13:57:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:01,406 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:01,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:01,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-06 13:57:01,407 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)] === [2021-08-06 13:57:01,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:01,407 INFO L82 PathProgramCache]: Analyzing trace with hash 680168160, now seen corresponding path program 73 times [2021-08-06 13:57:01,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:01,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384278285] [2021-08-06 13:57:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:01,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:01,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:01,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384278285] [2021-08-06 13:57:01,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384278285] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:01,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:01,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:01,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469976319] [2021-08-06 13:57:01,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:01,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:01,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:01,883 INFO L87 Difference]: Start difference. First operand 10049 states and 27122 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:03,272 INFO L93 Difference]: Finished difference Result 14163 states and 37412 transitions. [2021-08-06 13:57:03,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:03,294 INFO L225 Difference]: With dead ends: 14163 [2021-08-06 13:57:03,294 INFO L226 Difference]: Without dead ends: 14163 [2021-08-06 13:57:03,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1189.5ms TimeCoverageRelationStatistics Valid=289, Invalid=703, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:03,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14163 states. [2021-08-06 13:57:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 8355. [2021-08-06 13:57:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 8353 states have (on average 2.6756853824973064) internal successors, (22350), 8354 states have internal predecessors, (22350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 22350 transitions. [2021-08-06 13:57:03,436 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 22350 transitions. Word has length 114 [2021-08-06 13:57:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:03,436 INFO L470 AbstractCegarLoop]: Abstraction has 8355 states and 22350 transitions. [2021-08-06 13:57:03,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 22350 transitions. [2021-08-06 13:57:03,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:03,446 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:03,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:03,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-06 13:57:03,446 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)] === [2021-08-06 13:57:03,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:03,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1188195776, now seen corresponding path program 17 times [2021-08-06 13:57:03,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:03,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564444635] [2021-08-06 13:57:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:03,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:04,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:04,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:04,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564444635] [2021-08-06 13:57:04,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564444635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:04,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:04,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:04,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103847288] [2021-08-06 13:57:04,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:04,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:04,462 INFO L87 Difference]: Start difference. First operand 8355 states and 22350 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:08,204 INFO L93 Difference]: Finished difference Result 15669 states and 42253 transitions. [2021-08-06 13:57:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-06 13:57:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:08,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:08,230 INFO L225 Difference]: With dead ends: 15669 [2021-08-06 13:57:08,230 INFO L226 Difference]: Without dead ends: 15569 [2021-08-06 13:57:08,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2610.4ms TimeCoverageRelationStatistics Valid=1007, Invalid=3415, Unknown=0, NotChecked=0, Total=4422 [2021-08-06 13:57:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15569 states. [2021-08-06 13:57:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15569 to 10220. [2021-08-06 13:57:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10220 states, 10218 states have (on average 2.698375415932668) internal successors, (27572), 10219 states have internal predecessors, (27572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:08,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10220 states to 10220 states and 27572 transitions. [2021-08-06 13:57:08,421 INFO L78 Accepts]: Start accepts. Automaton has 10220 states and 27572 transitions. Word has length 114 [2021-08-06 13:57:08,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:08,421 INFO L470 AbstractCegarLoop]: Abstraction has 10220 states and 27572 transitions. [2021-08-06 13:57:08,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:08,422 INFO L276 IsEmpty]: Start isEmpty. Operand 10220 states and 27572 transitions. [2021-08-06 13:57:08,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:08,435 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:08,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:08,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-06 13:57:08,435 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)] === [2021-08-06 13:57:08,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:08,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1882544542, now seen corresponding path program 74 times [2021-08-06 13:57:08,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:08,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968563460] [2021-08-06 13:57:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:08,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:08,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:08,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968563460] [2021-08-06 13:57:08,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968563460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:08,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:08,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:08,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897595221] [2021-08-06 13:57:08,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:08,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:08,880 INFO L87 Difference]: Start difference. First operand 10220 states and 27572 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:10,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:10,345 INFO L93 Difference]: Finished difference Result 23868 states and 63406 transitions. [2021-08-06 13:57:10,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:10,346 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 [2021-08-06 13:57:10,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:10,383 INFO L225 Difference]: With dead ends: 23868 [2021-08-06 13:57:10,384 INFO L226 Difference]: Without dead ends: 23868 [2021-08-06 13:57:10,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1198.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23868 states. [2021-08-06 13:57:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23868 to 10250. [2021-08-06 13:57:10,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10250 states, 10248 states have (on average 2.6983801717408276) internal successors, (27653), 10249 states have internal predecessors, (27653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10250 states to 10250 states and 27653 transitions. [2021-08-06 13:57:10,618 INFO L78 Accepts]: Start accepts. Automaton has 10250 states and 27653 transitions. Word has length 114 [2021-08-06 13:57:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:10,618 INFO L470 AbstractCegarLoop]: Abstraction has 10250 states and 27653 transitions. [2021-08-06 13:57:10,618 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) [2021-08-06 13:57:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 10250 states and 27653 transitions. [2021-08-06 13:57:10,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:10,630 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:10,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:10,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-06 13:57:10,630 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)] === [2021-08-06 13:57:10,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:10,631 INFO L82 PathProgramCache]: Analyzing trace with hash -811525054, now seen corresponding path program 75 times [2021-08-06 13:57:10,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:10,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567490875] [2021-08-06 13:57:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:10,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:11,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:11,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567490875] [2021-08-06 13:57:11,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567490875] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:11,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:11,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:11,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198419033] [2021-08-06 13:57:11,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:11,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:11,035 INFO L87 Difference]: Start difference. First operand 10250 states and 27653 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:12,527 INFO L93 Difference]: Finished difference Result 26468 states and 70087 transitions. [2021-08-06 13:57:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:12,573 INFO L225 Difference]: With dead ends: 26468 [2021-08-06 13:57:12,573 INFO L226 Difference]: Without dead ends: 26468 [2021-08-06 13:57:12,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1250.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:12,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26468 states. [2021-08-06 13:57:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26468 to 10178. [2021-08-06 13:57:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10178 states, 10176 states have (on average 2.696835691823899) internal successors, (27443), 10177 states have internal predecessors, (27443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10178 states to 10178 states and 27443 transitions. [2021-08-06 13:57:12,822 INFO L78 Accepts]: Start accepts. Automaton has 10178 states and 27443 transitions. Word has length 114 [2021-08-06 13:57:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:12,822 INFO L470 AbstractCegarLoop]: Abstraction has 10178 states and 27443 transitions. [2021-08-06 13:57:12,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 10178 states and 27443 transitions. [2021-08-06 13:57:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:12,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:12,837 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] [2021-08-06 13:57:12,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-06 13:57:12,837 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)] === [2021-08-06 13:57:12,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:12,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2050645152, now seen corresponding path program 76 times [2021-08-06 13:57:12,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:12,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921002173] [2021-08-06 13:57:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:12,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:13,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:13,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921002173] [2021-08-06 13:57:13,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921002173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:13,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:13,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:13,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017236899] [2021-08-06 13:57:13,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:13,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:13,254 INFO L87 Difference]: Start difference. First operand 10178 states and 27443 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:14,784 INFO L93 Difference]: Finished difference Result 23228 states and 61043 transitions. [2021-08-06 13:57:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:14,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:14,819 INFO L225 Difference]: With dead ends: 23228 [2021-08-06 13:57:14,820 INFO L226 Difference]: Without dead ends: 23228 [2021-08-06 13:57:14,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1263.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:14,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23228 states. [2021-08-06 13:57:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23228 to 8806. [2021-08-06 13:57:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8806 states, 8804 states have (on average 2.6761699227623805) internal successors, (23561), 8805 states have internal predecessors, (23561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:15,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 23561 transitions. [2021-08-06 13:57:15,041 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 23561 transitions. Word has length 114 [2021-08-06 13:57:15,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:15,042 INFO L470 AbstractCegarLoop]: Abstraction has 8806 states and 23561 transitions. [2021-08-06 13:57:15,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 23561 transitions. [2021-08-06 13:57:15,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:15,052 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:15,052 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:15,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-06 13:57:15,052 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)] === [2021-08-06 13:57:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash 99722590, now seen corresponding path program 18 times [2021-08-06 13:57:15,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:15,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539921184] [2021-08-06 13:57:15,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:15,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:16,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:16,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:16,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539921184] [2021-08-06 13:57:16,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539921184] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:16,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:16,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:16,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925650328] [2021-08-06 13:57:16,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:16,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:16,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:16,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:16,010 INFO L87 Difference]: Start difference. First operand 8806 states and 23561 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:19,649 INFO L93 Difference]: Finished difference Result 17484 states and 46957 transitions. [2021-08-06 13:57:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-06 13:57:19,649 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:19,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:19,677 INFO L225 Difference]: With dead ends: 17484 [2021-08-06 13:57:19,678 INFO L226 Difference]: Without dead ends: 17384 [2021-08-06 13:57:19,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 2659.5ms TimeCoverageRelationStatistics Valid=1102, Invalid=3728, Unknown=0, NotChecked=0, Total=4830 [2021-08-06 13:57:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17384 states. [2021-08-06 13:57:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17384 to 10242. [2021-08-06 13:57:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10240 states have (on average 2.69443359375) internal successors, (27591), 10241 states have internal predecessors, (27591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 27591 transitions. [2021-08-06 13:57:19,879 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 27591 transitions. Word has length 114 [2021-08-06 13:57:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:19,879 INFO L470 AbstractCegarLoop]: Abstraction has 10242 states and 27591 transitions. [2021-08-06 13:57:19,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:19,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 27591 transitions. [2021-08-06 13:57:19,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:19,892 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:19,892 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:19,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-06 13:57:19,892 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)] === [2021-08-06 13:57:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:19,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1323949568, now seen corresponding path program 77 times [2021-08-06 13:57:19,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:19,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613800487] [2021-08-06 13:57:19,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:19,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:20,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:20,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613800487] [2021-08-06 13:57:20,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613800487] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:20,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:20,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:20,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123964339] [2021-08-06 13:57:20,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:20,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:20,297 INFO L87 Difference]: Start difference. First operand 10242 states and 27591 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:21,805 INFO L93 Difference]: Finished difference Result 28758 states and 75642 transitions. [2021-08-06 13:57:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:21,858 INFO L225 Difference]: With dead ends: 28758 [2021-08-06 13:57:21,858 INFO L226 Difference]: Without dead ends: 28758 [2021-08-06 13:57:21,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1260.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28758 states. [2021-08-06 13:57:22,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28758 to 10186. [2021-08-06 13:57:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10186 states, 10184 states have (on average 2.6931461115475255) internal successors, (27427), 10185 states have internal predecessors, (27427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10186 states to 10186 states and 27427 transitions. [2021-08-06 13:57:22,164 INFO L78 Accepts]: Start accepts. Automaton has 10186 states and 27427 transitions. Word has length 114 [2021-08-06 13:57:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:22,164 INFO L470 AbstractCegarLoop]: Abstraction has 10186 states and 27427 transitions. [2021-08-06 13:57:22,164 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) [2021-08-06 13:57:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10186 states and 27427 transitions. [2021-08-06 13:57:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:22,177 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:22,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-06 13:57:22,177 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)] === [2021-08-06 13:57:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash 84829470, now seen corresponding path program 78 times [2021-08-06 13:57:22,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:22,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166072015] [2021-08-06 13:57:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:22,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:22,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:22,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166072015] [2021-08-06 13:57:22,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166072015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:22,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:22,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:22,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474054114] [2021-08-06 13:57:22,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:22,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:22,672 INFO L87 Difference]: Start difference. First operand 10186 states and 27427 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:24,208 INFO L93 Difference]: Finished difference Result 28159 states and 73410 transitions. [2021-08-06 13:57:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:24,209 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 [2021-08-06 13:57:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:24,257 INFO L225 Difference]: With dead ends: 28159 [2021-08-06 13:57:24,257 INFO L226 Difference]: Without dead ends: 28159 [2021-08-06 13:57:24,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1262.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28159 states. [2021-08-06 13:57:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28159 to 8838. [2021-08-06 13:57:24,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8838 states, 8836 states have (on average 2.676889995473065) internal successors, (23653), 8837 states have internal predecessors, (23653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8838 states to 8838 states and 23653 transitions. [2021-08-06 13:57:24,505 INFO L78 Accepts]: Start accepts. Automaton has 8838 states and 23653 transitions. Word has length 114 [2021-08-06 13:57:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:24,505 INFO L470 AbstractCegarLoop]: Abstraction has 8838 states and 23653 transitions. [2021-08-06 13:57:24,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8838 states and 23653 transitions. [2021-08-06 13:57:24,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:24,516 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:24,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:24,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-06 13:57:24,516 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)] === [2021-08-06 13:57:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:24,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1945228192, now seen corresponding path program 19 times [2021-08-06 13:57:24,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:24,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998497905] [2021-08-06 13:57:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:24,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:25,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:25,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998497905] [2021-08-06 13:57:25,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998497905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:25,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:25,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:25,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232397282] [2021-08-06 13:57:25,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:25,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:25,452 INFO L87 Difference]: Start difference. First operand 8838 states and 23653 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:29,497 INFO L93 Difference]: Finished difference Result 17023 states and 45654 transitions. [2021-08-06 13:57:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-06 13:57:29,498 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:29,525 INFO L225 Difference]: With dead ends: 17023 [2021-08-06 13:57:29,525 INFO L226 Difference]: Without dead ends: 16913 [2021-08-06 13:57:29,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 2842.4ms TimeCoverageRelationStatistics Valid=1236, Invalid=4166, Unknown=0, NotChecked=0, Total=5402 [2021-08-06 13:57:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16913 states. [2021-08-06 13:57:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16913 to 10272. [2021-08-06 13:57:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10272 states, 10270 states have (on average 2.694255111976631) internal successors, (27670), 10271 states have internal predecessors, (27670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 27670 transitions. [2021-08-06 13:57:29,717 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 27670 transitions. Word has length 114 [2021-08-06 13:57:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:29,717 INFO L470 AbstractCegarLoop]: Abstraction has 10272 states and 27670 transitions. [2021-08-06 13:57:29,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 27670 transitions. [2021-08-06 13:57:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:29,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:29,730 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] [2021-08-06 13:57:29,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-06 13:57:29,730 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)] === [2021-08-06 13:57:29,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1125512126, now seen corresponding path program 79 times [2021-08-06 13:57:29,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:29,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801510596] [2021-08-06 13:57:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:29,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:30,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801510596] [2021-08-06 13:57:30,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801510596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:30,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:30,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:30,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142868214] [2021-08-06 13:57:30,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:30,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:30,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:30,142 INFO L87 Difference]: Start difference. First operand 10272 states and 27670 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:31,635 INFO L93 Difference]: Finished difference Result 29171 states and 76475 transitions. [2021-08-06 13:57:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:31,635 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:31,686 INFO L225 Difference]: With dead ends: 29171 [2021-08-06 13:57:31,687 INFO L226 Difference]: Without dead ends: 29171 [2021-08-06 13:57:31,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1268.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:31,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29171 states. [2021-08-06 13:57:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29171 to 10184. [2021-08-06 13:57:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10184 states, 10182 states have (on average 2.692398350029464) internal successors, (27414), 10183 states have internal predecessors, (27414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 27414 transitions. [2021-08-06 13:57:31,979 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 27414 transitions. Word has length 114 [2021-08-06 13:57:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:31,979 INFO L470 AbstractCegarLoop]: Abstraction has 10184 states and 27414 transitions. [2021-08-06 13:57:31,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:31,980 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 27414 transitions. [2021-08-06 13:57:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:31,992 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:31,992 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:31,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-06 13:57:31,992 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)] === [2021-08-06 13:57:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2057530754, now seen corresponding path program 80 times [2021-08-06 13:57:31,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:31,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399868274] [2021-08-06 13:57:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:31,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:32,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:32,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399868274] [2021-08-06 13:57:32,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399868274] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:32,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:32,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:32,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548867916] [2021-08-06 13:57:32,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:32,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:32,405 INFO L87 Difference]: Start difference. First operand 10184 states and 27414 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:33,858 INFO L93 Difference]: Finished difference Result 23606 states and 62067 transitions. [2021-08-06 13:57:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:33,858 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 [2021-08-06 13:57:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:33,895 INFO L225 Difference]: With dead ends: 23606 [2021-08-06 13:57:33,895 INFO L226 Difference]: Without dead ends: 23606 [2021-08-06 13:57:33,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1268.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23606 states. [2021-08-06 13:57:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23606 to 8788. [2021-08-06 13:57:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8788 states, 8786 states have (on average 2.673571591167767) internal successors, (23490), 8787 states have internal predecessors, (23490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:34,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8788 states to 8788 states and 23490 transitions. [2021-08-06 13:57:34,114 INFO L78 Accepts]: Start accepts. Automaton has 8788 states and 23490 transitions. Word has length 114 [2021-08-06 13:57:34,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:34,115 INFO L470 AbstractCegarLoop]: Abstraction has 8788 states and 23490 transitions. [2021-08-06 13:57:34,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:34,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8788 states and 23490 transitions. [2021-08-06 13:57:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:34,125 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:34,125 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:34,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-06 13:57:34,125 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)] === [2021-08-06 13:57:34,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:34,126 INFO L82 PathProgramCache]: Analyzing trace with hash -2142390142, now seen corresponding path program 20 times [2021-08-06 13:57:34,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:34,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059287866] [2021-08-06 13:57:34,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:34,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:35,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:35,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059287866] [2021-08-06 13:57:35,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059287866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:35,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:35,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:35,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733501914] [2021-08-06 13:57:35,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:35,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:35,085 INFO L87 Difference]: Start difference. First operand 8788 states and 23490 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:38,660 INFO L93 Difference]: Finished difference Result 15752 states and 42387 transitions. [2021-08-06 13:57:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-06 13:57:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:38,685 INFO L225 Difference]: With dead ends: 15752 [2021-08-06 13:57:38,685 INFO L226 Difference]: Without dead ends: 15652 [2021-08-06 13:57:38,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 2334.6ms TimeCoverageRelationStatistics Valid=966, Invalid=3324, Unknown=0, NotChecked=0, Total=4290 [2021-08-06 13:57:38,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15652 states. [2021-08-06 13:57:38,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15652 to 10256. [2021-08-06 13:57:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10256 states, 10254 states have (on average 2.6928028086600353) internal successors, (27612), 10255 states have internal predecessors, (27612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:38,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10256 states to 10256 states and 27612 transitions. [2021-08-06 13:57:38,868 INFO L78 Accepts]: Start accepts. Automaton has 10256 states and 27612 transitions. Word has length 114 [2021-08-06 13:57:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:38,868 INFO L470 AbstractCegarLoop]: Abstraction has 10256 states and 27612 transitions. [2021-08-06 13:57:38,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 10256 states and 27612 transitions. [2021-08-06 13:57:38,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:38,881 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:38,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:38,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-06 13:57:38,881 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)] === [2021-08-06 13:57:38,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:38,881 INFO L82 PathProgramCache]: Analyzing trace with hash -918163164, now seen corresponding path program 81 times [2021-08-06 13:57:38,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:38,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070321585] [2021-08-06 13:57:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:38,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:39,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:39,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070321585] [2021-08-06 13:57:39,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070321585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:39,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:39,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:39,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422738359] [2021-08-06 13:57:39,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:39,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:39,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:39,287 INFO L87 Difference]: Start difference. First operand 10256 states and 27612 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:40,805 INFO L93 Difference]: Finished difference Result 25342 states and 67030 transitions. [2021-08-06 13:57:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:40,849 INFO L225 Difference]: With dead ends: 25342 [2021-08-06 13:57:40,849 INFO L226 Difference]: Without dead ends: 25342 [2021-08-06 13:57:40,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1253.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25342 states. [2021-08-06 13:57:41,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25342 to 10232. [2021-08-06 13:57:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10232 states, 10230 states have (on average 2.69208211143695) internal successors, (27540), 10231 states have internal predecessors, (27540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10232 states to 10232 states and 27540 transitions. [2021-08-06 13:57:41,090 INFO L78 Accepts]: Start accepts. Automaton has 10232 states and 27540 transitions. Word has length 114 [2021-08-06 13:57:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:41,090 INFO L470 AbstractCegarLoop]: Abstraction has 10232 states and 27540 transitions. [2021-08-06 13:57:41,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:41,090 INFO L276 IsEmpty]: Start isEmpty. Operand 10232 states and 27540 transitions. [2021-08-06 13:57:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:41,102 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:41,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:41,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-06 13:57:41,103 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)] === [2021-08-06 13:57:41,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:41,103 INFO L82 PathProgramCache]: Analyzing trace with hash 2137684034, now seen corresponding path program 82 times [2021-08-06 13:57:41,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:41,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532426178] [2021-08-06 13:57:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:41,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:41,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:41,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532426178] [2021-08-06 13:57:41,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532426178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:41,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:41,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:41,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740220420] [2021-08-06 13:57:41,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:41,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:41,507 INFO L87 Difference]: Start difference. First operand 10232 states and 27540 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:42,979 INFO L93 Difference]: Finished difference Result 24743 states and 64798 transitions. [2021-08-06 13:57:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:42,980 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 [2021-08-06 13:57:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:43,079 INFO L225 Difference]: With dead ends: 24743 [2021-08-06 13:57:43,080 INFO L226 Difference]: Without dead ends: 24743 [2021-08-06 13:57:43,080 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 [2021-08-06 13:57:43,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24743 states. [2021-08-06 13:57:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24743 to 8884. [2021-08-06 13:57:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8884 states, 8882 states have (on average 2.675748705246566) internal successors, (23766), 8883 states have internal predecessors, (23766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 23766 transitions. [2021-08-06 13:57:43,273 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 23766 transitions. Word has length 114 [2021-08-06 13:57:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:43,273 INFO L470 AbstractCegarLoop]: Abstraction has 8884 states and 23766 transitions. [2021-08-06 13:57:43,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 23766 transitions. [2021-08-06 13:57:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:43,284 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:43,284 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] [2021-08-06 13:57:43,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-06 13:57:43,284 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)] === [2021-08-06 13:57:43,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:43,285 INFO L82 PathProgramCache]: Analyzing trace with hash -296884540, now seen corresponding path program 21 times [2021-08-06 13:57:43,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:43,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424960283] [2021-08-06 13:57:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:43,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:44,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:44,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:44,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424960283] [2021-08-06 13:57:44,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424960283] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:44,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:44,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:44,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964265864] [2021-08-06 13:57:44,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:44,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:44,290 INFO L87 Difference]: Start difference. First operand 8884 states and 23766 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:47,853 INFO L93 Difference]: Finished difference Result 16936 states and 45315 transitions. [2021-08-06 13:57:47,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-06 13:57:47,853 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:47,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:47,886 INFO L225 Difference]: With dead ends: 16936 [2021-08-06 13:57:47,886 INFO L226 Difference]: Without dead ends: 16826 [2021-08-06 13:57:47,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 2558.0ms TimeCoverageRelationStatistics Valid=1100, Invalid=3730, Unknown=0, NotChecked=0, Total=4830 [2021-08-06 13:57:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16826 states. [2021-08-06 13:57:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16826 to 10312. [2021-08-06 13:57:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10310 states have (on average 2.6935014548981573) internal successors, (27770), 10311 states have internal predecessors, (27770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 27770 transitions. [2021-08-06 13:57:48,137 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 27770 transitions. Word has length 114 [2021-08-06 13:57:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:48,137 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 27770 transitions. [2021-08-06 13:57:48,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 27770 transitions. [2021-08-06 13:57:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:48,152 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:48,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:48,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-06 13:57:48,152 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)] === [2021-08-06 13:57:48,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 927342438, now seen corresponding path program 83 times [2021-08-06 13:57:48,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:48,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211457013] [2021-08-06 13:57:48,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:48,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:48,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:48,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211457013] [2021-08-06 13:57:48,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211457013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:48,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:48,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:48,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138235356] [2021-08-06 13:57:48,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:48,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:48,560 INFO L87 Difference]: Start difference. First operand 10312 states and 27770 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:50,122 INFO L93 Difference]: Finished difference Result 30654 states and 80138 transitions. [2021-08-06 13:57:50,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:50,199 INFO L225 Difference]: With dead ends: 30654 [2021-08-06 13:57:50,199 INFO L226 Difference]: Without dead ends: 30654 [2021-08-06 13:57:50,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1269.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30654 states. [2021-08-06 13:57:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30654 to 10224. [2021-08-06 13:57:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10224 states, 10222 states have (on average 2.691645470553708) internal successors, (27514), 10223 states have internal predecessors, (27514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10224 states to 10224 states and 27514 transitions. [2021-08-06 13:57:50,515 INFO L78 Accepts]: Start accepts. Automaton has 10224 states and 27514 transitions. Word has length 114 [2021-08-06 13:57:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:50,515 INFO L470 AbstractCegarLoop]: Abstraction has 10224 states and 27514 transitions. [2021-08-06 13:57:50,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10224 states and 27514 transitions. [2021-08-06 13:57:50,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:50,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:50,527 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] [2021-08-06 13:57:50,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-06 13:57:50,527 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)] === [2021-08-06 13:57:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:50,527 INFO L82 PathProgramCache]: Analyzing trace with hash -4676190, now seen corresponding path program 84 times [2021-08-06 13:57:50,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:50,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153012062] [2021-08-06 13:57:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:50,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:50,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:50,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153012062] [2021-08-06 13:57:50,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153012062] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:50,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:50,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:50,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028193687] [2021-08-06 13:57:50,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:50,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:50,937 INFO L87 Difference]: Start difference. First operand 10224 states and 27514 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:52,434 INFO L93 Difference]: Finished difference Result 25089 states and 65730 transitions. [2021-08-06 13:57:52,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:52,434 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:52,491 INFO L225 Difference]: With dead ends: 25089 [2021-08-06 13:57:52,491 INFO L226 Difference]: Without dead ends: 25089 [2021-08-06 13:57:52,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1241.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25089 states. [2021-08-06 13:57:52,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25089 to 8852. [2021-08-06 13:57:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8850 states have (on average 2.6750282485875707) internal successors, (23674), 8851 states have internal predecessors, (23674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 23674 transitions. [2021-08-06 13:57:52,820 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 23674 transitions. Word has length 114 [2021-08-06 13:57:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:52,820 INFO L470 AbstractCegarLoop]: Abstraction has 8852 states and 23674 transitions. [2021-08-06 13:57:52,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 23674 transitions. [2021-08-06 13:57:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:52,830 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:52,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:52,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-06 13:57:52,831 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)] === [2021-08-06 13:57:52,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:52,831 INFO L82 PathProgramCache]: Analyzing trace with hash -164126786, now seen corresponding path program 22 times [2021-08-06 13:57:52,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:52,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140587024] [2021-08-06 13:57:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:52,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:53,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:53,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140587024] [2021-08-06 13:57:53,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140587024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:53,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:53,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:57:53,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519244588] [2021-08-06 13:57:53,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:57:53,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:57:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:57:53,849 INFO L87 Difference]: Start difference. First operand 8852 states and 23674 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:57,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:57,374 INFO L93 Difference]: Finished difference Result 16312 states and 43751 transitions. [2021-08-06 13:57:57,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-06 13:57:57,375 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:57,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:57,401 INFO L225 Difference]: With dead ends: 16312 [2021-08-06 13:57:57,402 INFO L226 Difference]: Without dead ends: 16160 [2021-08-06 13:57:57,402 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 2325.0ms TimeCoverageRelationStatistics Valid=997, Invalid=3425, Unknown=0, NotChecked=0, Total=4422 [2021-08-06 13:57:57,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16160 states. [2021-08-06 13:57:57,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16160 to 11324. [2021-08-06 13:57:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 11322 states have (on average 2.706235647412118) internal successors, (30640), 11323 states have internal predecessors, (30640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:57,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 30640 transitions. [2021-08-06 13:57:57,609 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 30640 transitions. Word has length 114 [2021-08-06 13:57:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:57,609 INFO L470 AbstractCegarLoop]: Abstraction has 11324 states and 30640 transitions. [2021-08-06 13:57:57,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 30640 transitions. [2021-08-06 13:57:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:57,624 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:57,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:57,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-06 13:57:57,624 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)] === [2021-08-06 13:57:57,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:57,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1060100192, now seen corresponding path program 85 times [2021-08-06 13:57:57,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:57,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554945649] [2021-08-06 13:57:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:57,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:57:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:57:58,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:57:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554945649] [2021-08-06 13:57:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554945649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:57:58,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:57:58,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:57:58,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888277973] [2021-08-06 13:57:58,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:57:58,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:57:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:57:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:57:58,041 INFO L87 Difference]: Start difference. First operand 11324 states and 30640 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:59,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:57:59,567 INFO L93 Difference]: Finished difference Result 27035 states and 71419 transitions. [2021-08-06 13:57:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:57:59,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:57:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:57:59,616 INFO L225 Difference]: With dead ends: 27035 [2021-08-06 13:57:59,617 INFO L226 Difference]: Without dead ends: 27035 [2021-08-06 13:57:59,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1281.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:57:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27035 states. [2021-08-06 13:57:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27035 to 11268. [2021-08-06 13:57:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11266 states have (on average 2.7051304810935557) internal successors, (30476), 11267 states have internal predecessors, (30476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 30476 transitions. [2021-08-06 13:57:59,896 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 30476 transitions. Word has length 114 [2021-08-06 13:57:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:57:59,896 INFO L470 AbstractCegarLoop]: Abstraction has 11268 states and 30476 transitions. [2021-08-06 13:57:59,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:57:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 30476 transitions. [2021-08-06 13:57:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:57:59,910 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:57:59,910 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:57:59,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-06 13:57:59,910 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)] === [2021-08-06 13:57:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:57:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash 128081564, now seen corresponding path program 86 times [2021-08-06 13:57:59,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:57:59,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372739760] [2021-08-06 13:57:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:57:59,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:57:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:00,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:00,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372739760] [2021-08-06 13:58:00,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372739760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:00,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:00,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:00,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970842667] [2021-08-06 13:58:00,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:00,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:00,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:00,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:00,332 INFO L87 Difference]: Start difference. First operand 11268 states and 30476 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:01,826 INFO L93 Difference]: Finished difference Result 26775 states and 70735 transitions. [2021-08-06 13:58:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:01,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:01,873 INFO L225 Difference]: With dead ends: 26775 [2021-08-06 13:58:01,873 INFO L226 Difference]: Without dead ends: 26775 [2021-08-06 13:58:01,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1238.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26775 states. [2021-08-06 13:58:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26775 to 11236. [2021-08-06 13:58:02,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11236 states, 11234 states have (on average 2.7046466085098806) internal successors, (30384), 11235 states have internal predecessors, (30384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11236 states to 11236 states and 30384 transitions. [2021-08-06 13:58:02,179 INFO L78 Accepts]: Start accepts. Automaton has 11236 states and 30384 transitions. Word has length 114 [2021-08-06 13:58:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:02,179 INFO L470 AbstractCegarLoop]: Abstraction has 11236 states and 30384 transitions. [2021-08-06 13:58:02,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:02,179 INFO L276 IsEmpty]: Start isEmpty. Operand 11236 states and 30384 transitions. [2021-08-06 13:58:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:02,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:02,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:02,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-06 13:58:02,193 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)] === [2021-08-06 13:58:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:02,193 INFO L82 PathProgramCache]: Analyzing trace with hash 931346180, now seen corresponding path program 87 times [2021-08-06 13:58:02,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:02,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563941329] [2021-08-06 13:58:02,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:02,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:02,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:02,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:02,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563941329] [2021-08-06 13:58:02,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563941329] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:02,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:02,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:02,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801790057] [2021-08-06 13:58:02,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:02,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:02,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:02,660 INFO L87 Difference]: Start difference. First operand 11236 states and 30384 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:04,100 INFO L93 Difference]: Finished difference Result 21614 states and 57369 transitions. [2021-08-06 13:58:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:04,134 INFO L225 Difference]: With dead ends: 21614 [2021-08-06 13:58:04,134 INFO L226 Difference]: Without dead ends: 21614 [2021-08-06 13:58:04,134 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21614 states. [2021-08-06 13:58:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21614 to 9560. [2021-08-06 13:58:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9560 states, 9558 states have (on average 2.6825695752249423) internal successors, (25640), 9559 states have internal predecessors, (25640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9560 states to 9560 states and 25640 transitions. [2021-08-06 13:58:04,349 INFO L78 Accepts]: Start accepts. Automaton has 9560 states and 25640 transitions. Word has length 114 [2021-08-06 13:58:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:04,349 INFO L470 AbstractCegarLoop]: Abstraction has 9560 states and 25640 transitions. [2021-08-06 13:58:04,349 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) [2021-08-06 13:58:04,349 INFO L276 IsEmpty]: Start isEmpty. Operand 9560 states and 25640 transitions. [2021-08-06 13:58:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:04,361 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:04,361 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:04,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-06 13:58:04,361 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)] === [2021-08-06 13:58:04,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash 350175136, now seen corresponding path program 23 times [2021-08-06 13:58:04,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:04,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599475388] [2021-08-06 13:58:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:04,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:05,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:05,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:05,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599475388] [2021-08-06 13:58:05,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599475388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:05,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:05,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:58:05,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506646787] [2021-08-06 13:58:05,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:58:05,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:58:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:58:05,344 INFO L87 Difference]: Start difference. First operand 9560 states and 25640 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:09,706 INFO L93 Difference]: Finished difference Result 17204 states and 46313 transitions. [2021-08-06 13:58:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 13:58:09,706 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:09,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:09,734 INFO L225 Difference]: With dead ends: 17204 [2021-08-06 13:58:09,734 INFO L226 Difference]: Without dead ends: 17110 [2021-08-06 13:58:09,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 2769.9ms TimeCoverageRelationStatistics Valid=1140, Invalid=3830, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 13:58:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17110 states. [2021-08-06 13:58:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17110 to 11340. [2021-08-06 13:58:09,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11340 states, 11338 states have (on average 2.7048862233198094) internal successors, (30668), 11339 states have internal predecessors, (30668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 30668 transitions. [2021-08-06 13:58:09,927 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 30668 transitions. Word has length 114 [2021-08-06 13:58:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:09,927 INFO L470 AbstractCegarLoop]: Abstraction has 11340 states and 30668 transitions. [2021-08-06 13:58:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 30668 transitions. [2021-08-06 13:58:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:09,941 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:09,941 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] [2021-08-06 13:58:09,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-06 13:58:09,941 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)] === [2021-08-06 13:58:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1574402114, now seen corresponding path program 88 times [2021-08-06 13:58:09,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:09,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245033849] [2021-08-06 13:58:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:09,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:10,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:10,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245033849] [2021-08-06 13:58:10,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245033849] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:10,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:10,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:10,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507254257] [2021-08-06 13:58:10,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:10,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:10,381 INFO L87 Difference]: Start difference. First operand 11340 states and 30668 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:11,975 INFO L93 Difference]: Finished difference Result 35103 states and 93121 transitions. [2021-08-06 13:58:11,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:12,029 INFO L225 Difference]: With dead ends: 35103 [2021-08-06 13:58:12,030 INFO L226 Difference]: Without dead ends: 35103 [2021-08-06 13:58:12,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1208.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35103 states. [2021-08-06 13:58:12,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35103 to 11452. [2021-08-06 13:58:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 11450 states have (on average 2.7065502183406114) internal successors, (30990), 11451 states have internal predecessors, (30990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 30990 transitions. [2021-08-06 13:58:12,340 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 30990 transitions. Word has length 114 [2021-08-06 13:58:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:12,340 INFO L470 AbstractCegarLoop]: Abstraction has 11452 states and 30990 transitions. [2021-08-06 13:58:12,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 30990 transitions. [2021-08-06 13:58:12,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:12,356 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:12,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:12,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-06 13:58:12,356 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)] === [2021-08-06 13:58:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:12,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1649545694, now seen corresponding path program 89 times [2021-08-06 13:58:12,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:12,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271588903] [2021-08-06 13:58:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:12,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:12,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:12,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271588903] [2021-08-06 13:58:12,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271588903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:12,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:12,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:12,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016747863] [2021-08-06 13:58:12,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:12,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:12,797 INFO L87 Difference]: Start difference. First operand 11452 states and 30990 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:14,327 INFO L93 Difference]: Finished difference Result 37591 states and 99526 transitions. [2021-08-06 13:58:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:14,327 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 [2021-08-06 13:58:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:14,392 INFO L225 Difference]: With dead ends: 37591 [2021-08-06 13:58:14,392 INFO L226 Difference]: Without dead ends: 37591 [2021-08-06 13:58:14,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1216.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37591 states. [2021-08-06 13:58:14,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37591 to 11484. [2021-08-06 13:58:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11484 states, 11482 states have (on average 2.7070196829820588) internal successors, (31082), 11483 states have internal predecessors, (31082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:14,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11484 states to 11484 states and 31082 transitions. [2021-08-06 13:58:14,809 INFO L78 Accepts]: Start accepts. Automaton has 11484 states and 31082 transitions. Word has length 114 [2021-08-06 13:58:14,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:14,809 INFO L470 AbstractCegarLoop]: Abstraction has 11484 states and 31082 transitions. [2021-08-06 13:58:14,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:14,809 INFO L276 IsEmpty]: Start isEmpty. Operand 11484 states and 31082 transitions. [2021-08-06 13:58:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:14,823 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:14,823 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:14,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-06 13:58:14,823 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)] === [2021-08-06 13:58:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:14,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1406301504, now seen corresponding path program 90 times [2021-08-06 13:58:14,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:14,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157887286] [2021-08-06 13:58:14,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:14,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:15,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:15,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157887286] [2021-08-06 13:58:15,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157887286] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:15,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:15,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:15,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601767465] [2021-08-06 13:58:15,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:15,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:15,233 INFO L87 Difference]: Start difference. First operand 11484 states and 31082 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:16,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:16,769 INFO L93 Difference]: Finished difference Result 34351 states and 90482 transitions. [2021-08-06 13:58:16,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:16,769 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:16,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:16,829 INFO L225 Difference]: With dead ends: 34351 [2021-08-06 13:58:16,829 INFO L226 Difference]: Without dead ends: 34351 [2021-08-06 13:58:16,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1213.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34351 states. [2021-08-06 13:58:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34351 to 11388. [2021-08-06 13:58:17,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11386 states have (on average 2.7056033725627966) internal successors, (30806), 11387 states have internal predecessors, (30806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 30806 transitions. [2021-08-06 13:58:17,250 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 30806 transitions. Word has length 114 [2021-08-06 13:58:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:17,250 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 30806 transitions. [2021-08-06 13:58:17,250 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) [2021-08-06 13:58:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 30806 transitions. [2021-08-06 13:58:17,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:17,265 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:17,265 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] [2021-08-06 13:58:17,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-06 13:58:17,266 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)] === [2021-08-06 13:58:17,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:17,266 INFO L82 PathProgramCache]: Analyzing trace with hash -738298050, now seen corresponding path program 24 times [2021-08-06 13:58:17,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:17,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901470541] [2021-08-06 13:58:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:17,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:18,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:18,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901470541] [2021-08-06 13:58:18,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901470541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:18,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:18,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:58:18,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966146229] [2021-08-06 13:58:18,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:58:18,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:58:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:58:18,208 INFO L87 Difference]: Start difference. First operand 11388 states and 30806 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:22,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:22,396 INFO L93 Difference]: Finished difference Result 19833 states and 53336 transitions. [2021-08-06 13:58:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-06 13:58:22,397 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:22,427 INFO L225 Difference]: With dead ends: 19833 [2021-08-06 13:58:22,427 INFO L226 Difference]: Without dead ends: 19739 [2021-08-06 13:58:22,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 2955.1ms TimeCoverageRelationStatistics Valid=1235, Invalid=4167, Unknown=0, NotChecked=0, Total=5402 [2021-08-06 13:58:22,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19739 states. [2021-08-06 13:58:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19739 to 11404. [2021-08-06 13:58:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11404 states, 11402 states have (on average 2.7058410805121906) internal successors, (30852), 11403 states have internal predecessors, (30852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11404 states to 11404 states and 30852 transitions. [2021-08-06 13:58:22,638 INFO L78 Accepts]: Start accepts. Automaton has 11404 states and 30852 transitions. Word has length 114 [2021-08-06 13:58:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:22,639 INFO L470 AbstractCegarLoop]: Abstraction has 11404 states and 30852 transitions. [2021-08-06 13:58:22,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11404 states and 30852 transitions. [2021-08-06 13:58:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:22,652 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:22,652 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:22,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-06 13:58:22,652 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)] === [2021-08-06 13:58:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:22,652 INFO L82 PathProgramCache]: Analyzing trace with hash 485928928, now seen corresponding path program 91 times [2021-08-06 13:58:22,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:22,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399226797] [2021-08-06 13:58:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:22,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:23,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:23,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399226797] [2021-08-06 13:58:23,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399226797] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:23,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:23,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:23,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478857986] [2021-08-06 13:58:23,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:23,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:23,108 INFO L87 Difference]: Start difference. First operand 11404 states and 30852 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:24,674 INFO L93 Difference]: Finished difference Result 35277 states and 93333 transitions. [2021-08-06 13:58:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:24,674 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:24,741 INFO L225 Difference]: With dead ends: 35277 [2021-08-06 13:58:24,742 INFO L226 Difference]: Without dead ends: 35277 [2021-08-06 13:58:24,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1285.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35277 states. [2021-08-06 13:58:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35277 to 11452. [2021-08-06 13:58:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11452 states, 11450 states have (on average 2.7065502183406114) internal successors, (30990), 11451 states have internal predecessors, (30990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11452 states to 11452 states and 30990 transitions. [2021-08-06 13:58:25,091 INFO L78 Accepts]: Start accepts. Automaton has 11452 states and 30990 transitions. Word has length 114 [2021-08-06 13:58:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:25,092 INFO L470 AbstractCegarLoop]: Abstraction has 11452 states and 30990 transitions. [2021-08-06 13:58:25,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 11452 states and 30990 transitions. [2021-08-06 13:58:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:25,105 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:25,106 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] [2021-08-06 13:58:25,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-06 13:58:25,106 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)] === [2021-08-06 13:58:25,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash -753191170, now seen corresponding path program 92 times [2021-08-06 13:58:25,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:25,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013619534] [2021-08-06 13:58:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:25,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:25,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:25,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013619534] [2021-08-06 13:58:25,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013619534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:25,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:25,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:25,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174104496] [2021-08-06 13:58:25,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:25,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:25,510 INFO L87 Difference]: Start difference. First operand 11452 states and 30990 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:27,091 INFO L93 Difference]: Finished difference Result 34566 states and 90825 transitions. [2021-08-06 13:58:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:27,091 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:27,148 INFO L225 Difference]: With dead ends: 34566 [2021-08-06 13:58:27,148 INFO L226 Difference]: Without dead ends: 34566 [2021-08-06 13:58:27,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1272.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:27,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34566 states. [2021-08-06 13:58:27,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34566 to 11420. [2021-08-06 13:58:27,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11420 states, 11418 states have (on average 2.706078122263093) internal successors, (30898), 11419 states have internal predecessors, (30898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11420 states to 11420 states and 30898 transitions. [2021-08-06 13:58:27,503 INFO L78 Accepts]: Start accepts. Automaton has 11420 states and 30898 transitions. Word has length 114 [2021-08-06 13:58:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:27,503 INFO L470 AbstractCegarLoop]: Abstraction has 11420 states and 30898 transitions. [2021-08-06 13:58:27,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11420 states and 30898 transitions. [2021-08-06 13:58:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:27,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:27,517 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] [2021-08-06 13:58:27,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-06 13:58:27,517 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)] === [2021-08-06 13:58:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:27,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1107207552, now seen corresponding path program 25 times [2021-08-06 13:58:27,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:27,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150057430] [2021-08-06 13:58:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:27,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:28,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:28,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150057430] [2021-08-06 13:58:28,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150057430] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:28,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:28,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:58:28,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258867861] [2021-08-06 13:58:28,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:58:28,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:58:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:58:28,457 INFO L87 Difference]: Start difference. First operand 11420 states and 30898 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:33,061 INFO L93 Difference]: Finished difference Result 19370 states and 52029 transitions. [2021-08-06 13:58:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-06 13:58:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:33,093 INFO L225 Difference]: With dead ends: 19370 [2021-08-06 13:58:33,093 INFO L226 Difference]: Without dead ends: 19268 [2021-08-06 13:58:33,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 3086.8ms TimeCoverageRelationStatistics Valid=1331, Invalid=4521, Unknown=0, NotChecked=0, Total=5852 [2021-08-06 13:58:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2021-08-06 13:58:33,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 11532. [2021-08-06 13:58:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11530 states have (on average 2.7077189939288813) internal successors, (31220), 11531 states have internal predecessors, (31220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:33,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 31220 transitions. [2021-08-06 13:58:33,321 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 31220 transitions. Word has length 114 [2021-08-06 13:58:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:33,322 INFO L470 AbstractCegarLoop]: Abstraction has 11532 states and 31220 transitions. [2021-08-06 13:58:33,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:33,322 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 31220 transitions. [2021-08-06 13:58:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:33,336 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:33,336 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:33,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-06 13:58:33,336 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)] === [2021-08-06 13:58:33,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:33,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1963532766, now seen corresponding path program 93 times [2021-08-06 13:58:33,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:33,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213928993] [2021-08-06 13:58:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:33,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:33,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:33,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213928993] [2021-08-06 13:58:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213928993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:33,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:33,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:33,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256770059] [2021-08-06 13:58:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:33,827 INFO L87 Difference]: Start difference. First operand 11532 states and 31220 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:35,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:35,311 INFO L93 Difference]: Finished difference Result 34906 states and 92050 transitions. [2021-08-06 13:58:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:35,373 INFO L225 Difference]: With dead ends: 34906 [2021-08-06 13:58:35,373 INFO L226 Difference]: Without dead ends: 34906 [2021-08-06 13:58:35,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1262.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34906 states. [2021-08-06 13:58:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34906 to 11548. [2021-08-06 13:58:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11548 states, 11546 states have (on average 2.7079508054737573) internal successors, (31266), 11547 states have internal predecessors, (31266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11548 states to 11548 states and 31266 transitions. [2021-08-06 13:58:35,723 INFO L78 Accepts]: Start accepts. Automaton has 11548 states and 31266 transitions. Word has length 114 [2021-08-06 13:58:35,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:35,723 INFO L470 AbstractCegarLoop]: Abstraction has 11548 states and 31266 transitions. [2021-08-06 13:58:35,724 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) [2021-08-06 13:58:35,724 INFO L276 IsEmpty]: Start isEmpty. Operand 11548 states and 31266 transitions. [2021-08-06 13:58:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:35,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:35,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:35,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-06 13:58:35,738 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)] === [2021-08-06 13:58:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:35,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1399415902, now seen corresponding path program 94 times [2021-08-06 13:58:35,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:35,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681807140] [2021-08-06 13:58:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:35,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:36,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:36,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681807140] [2021-08-06 13:58:36,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681807140] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:36,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:36,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:36,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97246186] [2021-08-06 13:58:36,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:36,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:36,195 INFO L87 Difference]: Start difference. First operand 11548 states and 31266 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:37,714 INFO L93 Difference]: Finished difference Result 29875 states and 79016 transitions. [2021-08-06 13:58:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:37,714 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:37,765 INFO L225 Difference]: With dead ends: 29875 [2021-08-06 13:58:37,766 INFO L226 Difference]: Without dead ends: 29875 [2021-08-06 13:58:37,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1267.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29875 states. [2021-08-06 13:58:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29875 to 11324. [2021-08-06 13:58:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11324 states, 11322 states have (on average 2.704645822292881) internal successors, (30622), 11323 states have internal predecessors, (30622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:38,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11324 states to 11324 states and 30622 transitions. [2021-08-06 13:58:38,063 INFO L78 Accepts]: Start accepts. Automaton has 11324 states and 30622 transitions. Word has length 114 [2021-08-06 13:58:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:38,063 INFO L470 AbstractCegarLoop]: Abstraction has 11324 states and 30622 transitions. [2021-08-06 13:58:38,063 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) [2021-08-06 13:58:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 11324 states and 30622 transitions. [2021-08-06 13:58:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:38,077 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:38,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:38,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-06 13:58:38,077 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)] === [2021-08-06 13:58:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 27711810, now seen corresponding path program 95 times [2021-08-06 13:58:38,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:38,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86950520] [2021-08-06 13:58:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:38,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:38,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:38,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86950520] [2021-08-06 13:58:38,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86950520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:38,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:38,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:38,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192456722] [2021-08-06 13:58:38,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:38,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:38,483 INFO L87 Difference]: Start difference. First operand 11324 states and 30622 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:39,990 INFO L93 Difference]: Finished difference Result 30815 states and 82106 transitions. [2021-08-06 13:58:39,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:39,990 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:39,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:40,046 INFO L225 Difference]: With dead ends: 30815 [2021-08-06 13:58:40,046 INFO L226 Difference]: Without dead ends: 30815 [2021-08-06 13:58:40,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1232.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30815 states. [2021-08-06 13:58:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30815 to 11372. [2021-08-06 13:58:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11372 states, 11370 states have (on average 2.7053649956024626) internal successors, (30760), 11371 states have internal predecessors, (30760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:40,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11372 states to 11372 states and 30760 transitions. [2021-08-06 13:58:40,344 INFO L78 Accepts]: Start accepts. Automaton has 11372 states and 30760 transitions. Word has length 114 [2021-08-06 13:58:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:40,344 INFO L470 AbstractCegarLoop]: Abstraction has 11372 states and 30760 transitions. [2021-08-06 13:58:40,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 11372 states and 30760 transitions. [2021-08-06 13:58:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:40,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:40,359 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] [2021-08-06 13:58:40,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-06 13:58:40,359 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)] === [2021-08-06 13:58:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:40,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1098731298, now seen corresponding path program 96 times [2021-08-06 13:58:40,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:40,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127261358] [2021-08-06 13:58:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:40,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:40,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:40,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127261358] [2021-08-06 13:58:40,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127261358] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:40,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:40,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:40,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26934244] [2021-08-06 13:58:40,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:40,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:40,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:40,772 INFO L87 Difference]: Start difference. First operand 11372 states and 30760 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:42,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:42,280 INFO L93 Difference]: Finished difference Result 30959 states and 82370 transitions. [2021-08-06 13:58:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:42,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:42,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:42,332 INFO L225 Difference]: With dead ends: 30959 [2021-08-06 13:58:42,333 INFO L226 Difference]: Without dead ends: 30959 [2021-08-06 13:58:42,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1244.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30959 states. [2021-08-06 13:58:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30959 to 11388. [2021-08-06 13:58:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 11386 states have (on average 2.7056033725627966) internal successors, (30806), 11387 states have internal predecessors, (30806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 30806 transitions. [2021-08-06 13:58:42,637 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 30806 transitions. Word has length 114 [2021-08-06 13:58:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:42,637 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 30806 transitions. [2021-08-06 13:58:42,637 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) [2021-08-06 13:58:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 30806 transitions. [2021-08-06 13:58:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:42,651 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:42,651 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] [2021-08-06 13:58:42,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-06 13:58:42,651 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)] === [2021-08-06 13:58:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:42,651 INFO L82 PathProgramCache]: Analyzing trace with hash -140388800, now seen corresponding path program 97 times [2021-08-06 13:58:42,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:42,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230350550] [2021-08-06 13:58:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:42,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:43,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:43,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230350550] [2021-08-06 13:58:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230350550] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:43,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:43,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:43,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298242163] [2021-08-06 13:58:43,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:43,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:43,060 INFO L87 Difference]: Start difference. First operand 11388 states and 30806 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:44,605 INFO L93 Difference]: Finished difference Result 29749 states and 78472 transitions. [2021-08-06 13:58:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:44,606 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 [2021-08-06 13:58:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:44,656 INFO L225 Difference]: With dead ends: 29749 [2021-08-06 13:58:44,656 INFO L226 Difference]: Without dead ends: 29749 [2021-08-06 13:58:44,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1212.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2021-08-06 13:58:44,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 11180. [2021-08-06 13:58:44,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11180 states, 11178 states have (on average 2.7024512435140453) internal successors, (30208), 11179 states have internal predecessors, (30208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:44,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11180 states to 11180 states and 30208 transitions. [2021-08-06 13:58:44,929 INFO L78 Accepts]: Start accepts. Automaton has 11180 states and 30208 transitions. Word has length 114 [2021-08-06 13:58:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:44,929 INFO L470 AbstractCegarLoop]: Abstraction has 11180 states and 30208 transitions. [2021-08-06 13:58:44,930 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) [2021-08-06 13:58:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 11180 states and 30208 transitions. [2021-08-06 13:58:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:44,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:44,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:44,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-06 13:58:44,943 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)] === [2021-08-06 13:58:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:44,944 INFO L82 PathProgramCache]: Analyzing trace with hash -227770076, now seen corresponding path program 98 times [2021-08-06 13:58:44,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:44,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112959128] [2021-08-06 13:58:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:44,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:45,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:45,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112959128] [2021-08-06 13:58:45,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112959128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:45,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:45,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:45,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709793046] [2021-08-06 13:58:45,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:45,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:45,379 INFO L87 Difference]: Start difference. First operand 11180 states and 30208 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:46,833 INFO L93 Difference]: Finished difference Result 23149 states and 61317 transitions. [2021-08-06 13:58:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:46,833 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 [2021-08-06 13:58:46,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:46,869 INFO L225 Difference]: With dead ends: 23149 [2021-08-06 13:58:46,869 INFO L226 Difference]: Without dead ends: 23149 [2021-08-06 13:58:46,870 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1188.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23149 states. [2021-08-06 13:58:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23149 to 9512. [2021-08-06 13:58:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9512 states, 9510 states have (on average 2.6809674027339643) internal successors, (25496), 9511 states have internal predecessors, (25496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:47,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 25496 transitions. [2021-08-06 13:58:47,178 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 25496 transitions. Word has length 114 [2021-08-06 13:58:47,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:47,179 INFO L470 AbstractCegarLoop]: Abstraction has 9512 states and 25496 transitions. [2021-08-06 13:58:47,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:47,179 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 25496 transitions. [2021-08-06 13:58:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:47,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:47,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:47,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-06 13:58:47,191 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)] === [2021-08-06 13:58:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1782228414, now seen corresponding path program 26 times [2021-08-06 13:58:47,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:47,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201130592] [2021-08-06 13:58:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:47,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:48,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:48,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:48,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201130592] [2021-08-06 13:58:48,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201130592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:48,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:48,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:58:48,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389786807] [2021-08-06 13:58:48,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:58:48,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:58:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:58:48,170 INFO L87 Difference]: Start difference. First operand 9512 states and 25496 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:52,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:52,677 INFO L93 Difference]: Finished difference Result 17652 states and 47515 transitions. [2021-08-06 13:58:52,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-06 13:58:52,677 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:52,702 INFO L225 Difference]: With dead ends: 17652 [2021-08-06 13:58:52,703 INFO L226 Difference]: Without dead ends: 17558 [2021-08-06 13:58:52,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 3117.6ms TimeCoverageRelationStatistics Valid=1270, Invalid=4280, Unknown=0, NotChecked=0, Total=5550 [2021-08-06 13:58:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17558 states. [2021-08-06 13:58:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17558 to 11156. [2021-08-06 13:58:52,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11156 states, 11154 states have (on average 2.701811009503317) internal successors, (30136), 11155 states have internal predecessors, (30136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11156 states to 11156 states and 30136 transitions. [2021-08-06 13:58:52,908 INFO L78 Accepts]: Start accepts. Automaton has 11156 states and 30136 transitions. Word has length 114 [2021-08-06 13:58:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:52,908 INFO L470 AbstractCegarLoop]: Abstraction has 11156 states and 30136 transitions. [2021-08-06 13:58:52,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 11156 states and 30136 transitions. [2021-08-06 13:58:52,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:52,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:52,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:52,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-06 13:58:52,923 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)] === [2021-08-06 13:58:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -558001436, now seen corresponding path program 99 times [2021-08-06 13:58:52,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:52,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358876436] [2021-08-06 13:58:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:52,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:53,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:53,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358876436] [2021-08-06 13:58:53,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358876436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:53,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:53,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:53,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917435274] [2021-08-06 13:58:53,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:53,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:53,341 INFO L87 Difference]: Start difference. First operand 11156 states and 30136 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:54,933 INFO L93 Difference]: Finished difference Result 30120 states and 80216 transitions. [2021-08-06 13:58:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:54,985 INFO L225 Difference]: With dead ends: 30120 [2021-08-06 13:58:54,986 INFO L226 Difference]: Without dead ends: 30120 [2021-08-06 13:58:54,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1272.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:55,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30120 states. [2021-08-06 13:58:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30120 to 11284. [2021-08-06 13:58:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11284 states, 11282 states have (on average 2.70377592625421) internal successors, (30504), 11283 states have internal predecessors, (30504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11284 states to 11284 states and 30504 transitions. [2021-08-06 13:58:55,275 INFO L78 Accepts]: Start accepts. Automaton has 11284 states and 30504 transitions. Word has length 114 [2021-08-06 13:58:55,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:55,275 INFO L470 AbstractCegarLoop]: Abstraction has 11284 states and 30504 transitions. [2021-08-06 13:58:55,275 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) [2021-08-06 13:58:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11284 states and 30504 transitions. [2021-08-06 13:58:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:55,289 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:55,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:58:55,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-06 13:58:55,289 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)] === [2021-08-06 13:58:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 513018052, now seen corresponding path program 100 times [2021-08-06 13:58:55,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:55,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357119133] [2021-08-06 13:58:55,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:55,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:55,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:55,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357119133] [2021-08-06 13:58:55,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357119133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:55,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:55,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:55,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996592694] [2021-08-06 13:58:55,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:55,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:55,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:55,706 INFO L87 Difference]: Start difference. First operand 11284 states and 30504 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:57,252 INFO L93 Difference]: Finished difference Result 32608 states and 86621 transitions. [2021-08-06 13:58:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:57,252 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:57,306 INFO L225 Difference]: With dead ends: 32608 [2021-08-06 13:58:57,306 INFO L226 Difference]: Without dead ends: 32608 [2021-08-06 13:58:57,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1222.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32608 states. [2021-08-06 13:58:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32608 to 11316. [2021-08-06 13:58:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11316 states, 11314 states have (on average 2.7042602085911263) internal successors, (30596), 11315 states have internal predecessors, (30596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:57,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11316 states to 11316 states and 30596 transitions. [2021-08-06 13:58:57,634 INFO L78 Accepts]: Start accepts. Automaton has 11316 states and 30596 transitions. Word has length 114 [2021-08-06 13:58:57,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:58:57,634 INFO L470 AbstractCegarLoop]: Abstraction has 11316 states and 30596 transitions. [2021-08-06 13:58:57,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:57,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11316 states and 30596 transitions. [2021-08-06 13:58:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:58:57,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:58:57,648 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] [2021-08-06 13:58:57,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-06 13:58:57,648 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)] === [2021-08-06 13:58:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:58:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash -726102046, now seen corresponding path program 101 times [2021-08-06 13:58:57,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:58:57,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220982004] [2021-08-06 13:58:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:58:57,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:58:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:58:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:58:58,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:58:58,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220982004] [2021-08-06 13:58:58,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220982004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:58:58,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:58:58,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:58:58,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194530787] [2021-08-06 13:58:58,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:58:58,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:58:58,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:58:58,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:58:58,061 INFO L87 Difference]: Start difference. First operand 11316 states and 30596 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:58:59,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:58:59,598 INFO L93 Difference]: Finished difference Result 29368 states and 77577 transitions. [2021-08-06 13:58:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:58:59,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:58:59,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:58:59,651 INFO L225 Difference]: With dead ends: 29368 [2021-08-06 13:58:59,651 INFO L226 Difference]: Without dead ends: 29368 [2021-08-06 13:58:59,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1226.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:58:59,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29368 states. [2021-08-06 13:58:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29368 to 11220. [2021-08-06 13:59:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11220 states, 11218 states have (on average 2.702799072918524) internal successors, (30320), 11219 states have internal predecessors, (30320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11220 states to 11220 states and 30320 transitions. [2021-08-06 13:59:00,022 INFO L78 Accepts]: Start accepts. Automaton has 11220 states and 30320 transitions. Word has length 114 [2021-08-06 13:59:00,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:00,022 INFO L470 AbstractCegarLoop]: Abstraction has 11220 states and 30320 transitions. [2021-08-06 13:59:00,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 11220 states and 30320 transitions. [2021-08-06 13:59:00,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:00,036 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:00,036 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:00,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-06 13:59:00,036 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)] === [2021-08-06 13:59:00,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:00,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1424265696, now seen corresponding path program 27 times [2021-08-06 13:59:00,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:00,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176617142] [2021-08-06 13:59:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:00,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:00,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:00,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176617142] [2021-08-06 13:59:00,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176617142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:00,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:00,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:59:00,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730321911] [2021-08-06 13:59:00,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:59:00,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:00,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:59:00,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:59:00,983 INFO L87 Difference]: Start difference. First operand 11220 states and 30320 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:05,729 INFO L93 Difference]: Finished difference Result 20297 states and 54584 transitions. [2021-08-06 13:59:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-06 13:59:05,729 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:05,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:05,764 INFO L225 Difference]: With dead ends: 20297 [2021-08-06 13:59:05,764 INFO L226 Difference]: Without dead ends: 20203 [2021-08-06 13:59:05,765 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1102 ImplicationChecksByTransitivity, 3205.8ms TimeCoverageRelationStatistics Valid=1365, Invalid=4641, Unknown=0, NotChecked=0, Total=6006 [2021-08-06 13:59:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20203 states. [2021-08-06 13:59:05,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20203 to 11172. [2021-08-06 13:59:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11172 states, 11170 states have (on average 2.7020590868397494) internal successors, (30182), 11171 states have internal predecessors, (30182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11172 states to 11172 states and 30182 transitions. [2021-08-06 13:59:05,993 INFO L78 Accepts]: Start accepts. Automaton has 11172 states and 30182 transitions. Word has length 114 [2021-08-06 13:59:05,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:05,993 INFO L470 AbstractCegarLoop]: Abstraction has 11172 states and 30182 transitions. [2021-08-06 13:59:05,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 11172 states and 30182 transitions. [2021-08-06 13:59:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:06,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:06,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:06,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-06 13:59:06,007 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)] === [2021-08-06 13:59:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:06,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1646474622, now seen corresponding path program 102 times [2021-08-06 13:59:06,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:06,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111073651] [2021-08-06 13:59:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:06,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:06,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:06,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111073651] [2021-08-06 13:59:06,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111073651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:06,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:06,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:06,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236947660] [2021-08-06 13:59:06,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:06,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:06,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:06,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:06,441 INFO L87 Difference]: Start difference. First operand 11172 states and 30182 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:07,975 INFO L93 Difference]: Finished difference Result 30294 states and 80428 transitions. [2021-08-06 13:59:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:07,976 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:08,030 INFO L225 Difference]: With dead ends: 30294 [2021-08-06 13:59:08,030 INFO L226 Difference]: Without dead ends: 30294 [2021-08-06 13:59:08,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1274.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:08,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30294 states. [2021-08-06 13:59:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30294 to 11220. [2021-08-06 13:59:08,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11220 states, 11218 states have (on average 2.702799072918524) internal successors, (30320), 11219 states have internal predecessors, (30320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11220 states to 11220 states and 30320 transitions. [2021-08-06 13:59:08,322 INFO L78 Accepts]: Start accepts. Automaton has 11220 states and 30320 transitions. Word has length 114 [2021-08-06 13:59:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:08,323 INFO L470 AbstractCegarLoop]: Abstraction has 11220 states and 30320 transitions. [2021-08-06 13:59:08,323 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) [2021-08-06 13:59:08,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11220 states and 30320 transitions. [2021-08-06 13:59:08,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:08,337 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:08,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:08,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-06 13:59:08,337 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)] === [2021-08-06 13:59:08,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1409372576, now seen corresponding path program 103 times [2021-08-06 13:59:08,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:08,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203326620] [2021-08-06 13:59:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:08,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:08,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:08,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203326620] [2021-08-06 13:59:08,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203326620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:08,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:08,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:08,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316093004] [2021-08-06 13:59:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:08,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:08,742 INFO L87 Difference]: Start difference. First operand 11220 states and 30320 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:10,305 INFO L93 Difference]: Finished difference Result 29583 states and 77920 transitions. [2021-08-06 13:59:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:10,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:10,356 INFO L225 Difference]: With dead ends: 29583 [2021-08-06 13:59:10,357 INFO L226 Difference]: Without dead ends: 29583 [2021-08-06 13:59:10,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1269.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29583 states. [2021-08-06 13:59:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29583 to 11188. [2021-08-06 13:59:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11188 states, 11186 states have (on average 2.7023064544966924) internal successors, (30228), 11187 states have internal predecessors, (30228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11188 states to 11188 states and 30228 transitions. [2021-08-06 13:59:10,668 INFO L78 Accepts]: Start accepts. Automaton has 11188 states and 30228 transitions. Word has length 114 [2021-08-06 13:59:10,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:10,668 INFO L470 AbstractCegarLoop]: Abstraction has 11188 states and 30228 transitions. [2021-08-06 13:59:10,668 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) [2021-08-06 13:59:10,668 INFO L276 IsEmpty]: Start isEmpty. Operand 11188 states and 30228 transitions. [2021-08-06 13:59:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:10,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:10,682 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:10,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-06 13:59:10,682 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)] === [2021-08-06 13:59:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1025195998, now seen corresponding path program 28 times [2021-08-06 13:59:10,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:10,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159142738] [2021-08-06 13:59:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:10,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:11,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:11,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159142738] [2021-08-06 13:59:11,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159142738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:11,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:11,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:59:11,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339688726] [2021-08-06 13:59:11,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:59:11,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:59:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:59:11,631 INFO L87 Difference]: Start difference. First operand 11188 states and 30228 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:16,605 INFO L93 Difference]: Finished difference Result 19538 states and 52457 transitions. [2021-08-06 13:59:16,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-06 13:59:16,606 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:16,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:16,636 INFO L225 Difference]: With dead ends: 19538 [2021-08-06 13:59:16,636 INFO L226 Difference]: Without dead ends: 19436 [2021-08-06 13:59:16,637 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 3331.1ms TimeCoverageRelationStatistics Valid=1461, Invalid=5019, Unknown=0, NotChecked=0, Total=6480 [2021-08-06 13:59:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19436 states. [2021-08-06 13:59:16,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19436 to 10812. [2021-08-06 13:59:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10812 states, 10810 states have (on average 2.6991674375578167) internal successors, (29178), 10811 states have internal predecessors, (29178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:16,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10812 states to 10812 states and 29178 transitions. [2021-08-06 13:59:16,876 INFO L78 Accepts]: Start accepts. Automaton has 10812 states and 29178 transitions. Word has length 114 [2021-08-06 13:59:16,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:16,877 INFO L470 AbstractCegarLoop]: Abstraction has 10812 states and 29178 transitions. [2021-08-06 13:59:16,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:16,877 INFO L276 IsEmpty]: Start isEmpty. Operand 10812 states and 29178 transitions. [2021-08-06 13:59:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:16,889 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:16,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:16,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-06 13:59:16,890 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)] === [2021-08-06 13:59:16,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:16,890 INFO L82 PathProgramCache]: Analyzing trace with hash 199030980, now seen corresponding path program 104 times [2021-08-06 13:59:16,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:16,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572225150] [2021-08-06 13:59:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:16,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:17,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:17,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572225150] [2021-08-06 13:59:17,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572225150] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:17,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:17,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:17,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519172886] [2021-08-06 13:59:17,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:17,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:17,296 INFO L87 Difference]: Start difference. First operand 10812 states and 29178 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:18,775 INFO L93 Difference]: Finished difference Result 29923 states and 79145 transitions. [2021-08-06 13:59:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:18,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:18,830 INFO L225 Difference]: With dead ends: 29923 [2021-08-06 13:59:18,830 INFO L226 Difference]: Without dead ends: 29923 [2021-08-06 13:59:18,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1234.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:18,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29923 states. [2021-08-06 13:59:19,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29923 to 10828. [2021-08-06 13:59:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 10826 states have (on average 2.699427304636985) internal successors, (29224), 10827 states have internal predecessors, (29224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 29224 transitions. [2021-08-06 13:59:19,120 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 29224 transitions. Word has length 114 [2021-08-06 13:59:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:19,121 INFO L470 AbstractCegarLoop]: Abstraction has 10828 states and 29224 transitions. [2021-08-06 13:59:19,121 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) [2021-08-06 13:59:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 29224 transitions. [2021-08-06 13:59:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:19,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:19,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:19,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-06 13:59:19,134 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)] === [2021-08-06 13:59:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:19,134 INFO L82 PathProgramCache]: Analyzing trace with hash -732987648, now seen corresponding path program 105 times [2021-08-06 13:59:19,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:19,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104607278] [2021-08-06 13:59:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:19,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:19,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:19,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104607278] [2021-08-06 13:59:19,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104607278] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:19,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:19,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:19,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593894387] [2021-08-06 13:59:19,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:19,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:19,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:19,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:19,597 INFO L87 Difference]: Start difference. First operand 10828 states and 29224 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:21,051 INFO L93 Difference]: Finished difference Result 24892 states and 66111 transitions. [2021-08-06 13:59:21,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:21,051 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 [2021-08-06 13:59:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:21,097 INFO L225 Difference]: With dead ends: 24892 [2021-08-06 13:59:21,097 INFO L226 Difference]: Without dead ends: 24892 [2021-08-06 13:59:21,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1245.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:21,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2021-08-06 13:59:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 10604. [2021-08-06 13:59:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10604 states, 10602 states have (on average 2.695717789096397) internal successors, (28580), 10603 states have internal predecessors, (28580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10604 states to 10604 states and 28580 transitions. [2021-08-06 13:59:21,338 INFO L78 Accepts]: Start accepts. Automaton has 10604 states and 28580 transitions. Word has length 114 [2021-08-06 13:59:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:21,338 INFO L470 AbstractCegarLoop]: Abstraction has 10604 states and 28580 transitions. [2021-08-06 13:59:21,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 10604 states and 28580 transitions. [2021-08-06 13:59:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:21,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:21,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:21,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-06 13:59:21,350 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)] === [2021-08-06 13:59:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2104691740, now seen corresponding path program 106 times [2021-08-06 13:59:21,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:21,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712772484] [2021-08-06 13:59:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:21,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:21,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:21,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712772484] [2021-08-06 13:59:21,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712772484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:21,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:21,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:21,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462588452] [2021-08-06 13:59:21,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:21,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:21,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:21,763 INFO L87 Difference]: Start difference. First operand 10604 states and 28580 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:23,323 INFO L93 Difference]: Finished difference Result 34843 states and 92784 transitions. [2021-08-06 13:59:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:23,382 INFO L225 Difference]: With dead ends: 34843 [2021-08-06 13:59:23,382 INFO L226 Difference]: Without dead ends: 34843 [2021-08-06 13:59:23,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1235.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:23,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34843 states. [2021-08-06 13:59:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34843 to 10700. [2021-08-06 13:59:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10700 states, 10698 states have (on average 2.697326603103384) internal successors, (28856), 10699 states have internal predecessors, (28856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10700 states to 10700 states and 28856 transitions. [2021-08-06 13:59:23,697 INFO L78 Accepts]: Start accepts. Automaton has 10700 states and 28856 transitions. Word has length 114 [2021-08-06 13:59:23,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:23,697 INFO L470 AbstractCegarLoop]: Abstraction has 10700 states and 28856 transitions. [2021-08-06 13:59:23,697 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) [2021-08-06 13:59:23,697 INFO L276 IsEmpty]: Start isEmpty. Operand 10700 states and 28856 transitions. [2021-08-06 13:59:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:23,710 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:23,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:23,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-06 13:59:23,711 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)] === [2021-08-06 13:59:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:23,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1033672252, now seen corresponding path program 107 times [2021-08-06 13:59:23,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:23,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60079646] [2021-08-06 13:59:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:23,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:24,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:24,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60079646] [2021-08-06 13:59:24,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60079646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:24,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:24,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:24,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875046500] [2021-08-06 13:59:24,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:24,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:24,117 INFO L87 Difference]: Start difference. First operand 10700 states and 28856 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:25,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:25,703 INFO L93 Difference]: Finished difference Result 34987 states and 93048 transitions. [2021-08-06 13:59:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:25,703 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 [2021-08-06 13:59:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:25,766 INFO L225 Difference]: With dead ends: 34987 [2021-08-06 13:59:25,767 INFO L226 Difference]: Without dead ends: 34987 [2021-08-06 13:59:25,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1250.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34987 states. [2021-08-06 13:59:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34987 to 10732. [2021-08-06 13:59:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10732 states, 10730 states have (on average 2.697856477166822) internal successors, (28948), 10731 states have internal predecessors, (28948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10732 states to 10732 states and 28948 transitions. [2021-08-06 13:59:26,084 INFO L78 Accepts]: Start accepts. Automaton has 10732 states and 28948 transitions. Word has length 114 [2021-08-06 13:59:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:26,085 INFO L470 AbstractCegarLoop]: Abstraction has 10732 states and 28948 transitions. [2021-08-06 13:59:26,085 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) [2021-08-06 13:59:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 10732 states and 28948 transitions. [2021-08-06 13:59:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:26,098 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:26,098 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] [2021-08-06 13:59:26,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-06 13:59:26,098 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)] === [2021-08-06 13:59:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:26,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2022174946, now seen corresponding path program 108 times [2021-08-06 13:59:26,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:26,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917910342] [2021-08-06 13:59:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:26,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:26,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:26,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:26,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917910342] [2021-08-06 13:59:26,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917910342] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:26,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:26,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:26,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685579450] [2021-08-06 13:59:26,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:26,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:26,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:26,514 INFO L87 Difference]: Start difference. First operand 10732 states and 28948 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:28,086 INFO L93 Difference]: Finished difference Result 33777 states and 89150 transitions. [2021-08-06 13:59:28,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:28,087 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 [2021-08-06 13:59:28,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:28,142 INFO L225 Difference]: With dead ends: 33777 [2021-08-06 13:59:28,142 INFO L226 Difference]: Without dead ends: 33777 [2021-08-06 13:59:28,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1250.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33777 states. [2021-08-06 13:59:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33777 to 10636. [2021-08-06 13:59:28,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10634 states have (on average 2.6962572879443294) internal successors, (28672), 10635 states have internal predecessors, (28672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 28672 transitions. [2021-08-06 13:59:28,462 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 28672 transitions. Word has length 114 [2021-08-06 13:59:28,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:28,462 INFO L470 AbstractCegarLoop]: Abstraction has 10636 states and 28672 transitions. [2021-08-06 13:59:28,462 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) [2021-08-06 13:59:28,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 28672 transitions. [2021-08-06 13:59:28,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:28,477 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:28,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:28,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-06 13:59:28,478 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)] === [2021-08-06 13:59:28,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:28,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1934793670, now seen corresponding path program 109 times [2021-08-06 13:59:28,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:28,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270234077] [2021-08-06 13:59:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:28,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:28,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:28,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270234077] [2021-08-06 13:59:28,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270234077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:28,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:28,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:28,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452505479] [2021-08-06 13:59:28,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:28,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:28,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:28,900 INFO L87 Difference]: Start difference. First operand 10636 states and 28672 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:30,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:30,373 INFO L93 Difference]: Finished difference Result 27177 states and 71995 transitions. [2021-08-06 13:59:30,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:30,373 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:30,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:30,419 INFO L225 Difference]: With dead ends: 27177 [2021-08-06 13:59:30,419 INFO L226 Difference]: Without dead ends: 27177 [2021-08-06 13:59:30,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1182.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:30,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27177 states. [2021-08-06 13:59:30,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27177 to 10572. [2021-08-06 13:59:30,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10572 states, 10570 states have (on average 2.695175023651845) internal successors, (28488), 10571 states have internal predecessors, (28488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10572 states to 10572 states and 28488 transitions. [2021-08-06 13:59:30,720 INFO L78 Accepts]: Start accepts. Automaton has 10572 states and 28488 transitions. Word has length 114 [2021-08-06 13:59:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:30,720 INFO L470 AbstractCegarLoop]: Abstraction has 10572 states and 28488 transitions. [2021-08-06 13:59:30,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 10572 states and 28488 transitions. [2021-08-06 13:59:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:30,733 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:30,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:30,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-06 13:59:30,733 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)] === [2021-08-06 13:59:30,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:30,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1595591044, now seen corresponding path program 110 times [2021-08-06 13:59:30,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:30,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376640355] [2021-08-06 13:59:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:30,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:31,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:31,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376640355] [2021-08-06 13:59:31,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376640355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:31,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:31,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:31,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991671356] [2021-08-06 13:59:31,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:31,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:31,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:31,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:31,149 INFO L87 Difference]: Start difference. First operand 10572 states and 28488 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:32,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:32,651 INFO L93 Difference]: Finished difference Result 25800 states and 69109 transitions. [2021-08-06 13:59:32,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:32,651 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:32,696 INFO L225 Difference]: With dead ends: 25800 [2021-08-06 13:59:32,696 INFO L226 Difference]: Without dead ends: 25800 [2021-08-06 13:59:32,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1187.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:32,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25800 states. [2021-08-06 13:59:32,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25800 to 10636. [2021-08-06 13:59:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10636 states, 10634 states have (on average 2.6962572879443294) internal successors, (28672), 10635 states have internal predecessors, (28672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:32,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10636 states to 10636 states and 28672 transitions. [2021-08-06 13:59:32,942 INFO L78 Accepts]: Start accepts. Automaton has 10636 states and 28672 transitions. Word has length 114 [2021-08-06 13:59:32,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:32,943 INFO L470 AbstractCegarLoop]: Abstraction has 10636 states and 28672 transitions. [2021-08-06 13:59:32,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10636 states and 28672 transitions. [2021-08-06 13:59:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:32,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:32,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:32,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-06 13:59:32,956 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)] === [2021-08-06 13:59:32,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:32,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1628356764, now seen corresponding path program 111 times [2021-08-06 13:59:32,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:32,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503217866] [2021-08-06 13:59:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:32,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:33,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:33,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503217866] [2021-08-06 13:59:33,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503217866] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:33,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:33,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:33,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466416193] [2021-08-06 13:59:33,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:33,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:33,403 INFO L87 Difference]: Start difference. First operand 10636 states and 28672 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:34,845 INFO L93 Difference]: Finished difference Result 25944 states and 69373 transitions. [2021-08-06 13:59:34,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:34,845 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 [2021-08-06 13:59:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:34,891 INFO L225 Difference]: With dead ends: 25944 [2021-08-06 13:59:34,891 INFO L226 Difference]: Without dead ends: 25944 [2021-08-06 13:59:34,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1194.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25944 states. [2021-08-06 13:59:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25944 to 10652. [2021-08-06 13:59:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10652 states, 10650 states have (on average 2.696525821596244) internal successors, (28718), 10651 states have internal predecessors, (28718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10652 states to 10652 states and 28718 transitions. [2021-08-06 13:59:35,146 INFO L78 Accepts]: Start accepts. Automaton has 10652 states and 28718 transitions. Word has length 114 [2021-08-06 13:59:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:35,146 INFO L470 AbstractCegarLoop]: Abstraction has 10652 states and 28718 transitions. [2021-08-06 13:59:35,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 10652 states and 28718 transitions. [2021-08-06 13:59:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:35,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:35,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:35,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-06 13:59:35,159 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)] === [2021-08-06 13:59:35,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:35,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1427490434, now seen corresponding path program 112 times [2021-08-06 13:59:35,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:35,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730679249] [2021-08-06 13:59:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:35,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:35,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:35,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730679249] [2021-08-06 13:59:35,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730679249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:35,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:35,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:35,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283606864] [2021-08-06 13:59:35,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:35,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:35,575 INFO L87 Difference]: Start difference. First operand 10652 states and 28718 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:37,090 INFO L93 Difference]: Finished difference Result 24734 states and 65475 transitions. [2021-08-06 13:59:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:37,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:37,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:37,135 INFO L225 Difference]: With dead ends: 24734 [2021-08-06 13:59:37,135 INFO L226 Difference]: Without dead ends: 24734 [2021-08-06 13:59:37,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1223.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24734 states. [2021-08-06 13:59:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24734 to 10444. [2021-08-06 13:59:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10444 states, 10442 states have (on average 2.6929706952691057) internal successors, (28120), 10443 states have internal predecessors, (28120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10444 states to 10444 states and 28120 transitions. [2021-08-06 13:59:37,382 INFO L78 Accepts]: Start accepts. Automaton has 10444 states and 28120 transitions. Word has length 114 [2021-08-06 13:59:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 10444 states and 28120 transitions. [2021-08-06 13:59:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 10444 states and 28120 transitions. [2021-08-06 13:59:37,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:37,395 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:37,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:37,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-06 13:59:37,395 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)] === [2021-08-06 13:59:37,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1340109158, now seen corresponding path program 113 times [2021-08-06 13:59:37,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:37,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34505967] [2021-08-06 13:59:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:37,396 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:37,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:37,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34505967] [2021-08-06 13:59:37,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34505967] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:37,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:37,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:37,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229083110] [2021-08-06 13:59:37,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:37,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:37,812 INFO L87 Difference]: Start difference. First operand 10444 states and 28120 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:39,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:39,317 INFO L93 Difference]: Finished difference Result 24904 states and 66149 transitions. [2021-08-06 13:59:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:39,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:39,361 INFO L225 Difference]: With dead ends: 24904 [2021-08-06 13:59:39,361 INFO L226 Difference]: Without dead ends: 24904 [2021-08-06 13:59:39,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1222.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24904 states. [2021-08-06 13:59:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24904 to 10412. [2021-08-06 13:59:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10412 states, 10410 states have (on average 2.6924111431316042) internal successors, (28028), 10411 states have internal predecessors, (28028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:39,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10412 states to 10412 states and 28028 transitions. [2021-08-06 13:59:39,601 INFO L78 Accepts]: Start accepts. Automaton has 10412 states and 28028 transitions. Word has length 114 [2021-08-06 13:59:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:39,601 INFO L470 AbstractCegarLoop]: Abstraction has 10412 states and 28028 transitions. [2021-08-06 13:59:39,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 10412 states and 28028 transitions. [2021-08-06 13:59:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:39,614 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:39,614 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] [2021-08-06 13:59:39,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-06 13:59:39,614 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)] === [2021-08-06 13:59:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:39,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1212241824, now seen corresponding path program 114 times [2021-08-06 13:59:39,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:39,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765907644] [2021-08-06 13:59:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:39,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:40,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:40,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765907644] [2021-08-06 13:59:40,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765907644] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:40,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:40,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:40,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122499999] [2021-08-06 13:59:40,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:40,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:40,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:40,086 INFO L87 Difference]: Start difference. First operand 10412 states and 28028 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:41,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:41,495 INFO L93 Difference]: Finished difference Result 18361 states and 48851 transitions. [2021-08-06 13:59:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:41,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:41,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:41,522 INFO L225 Difference]: With dead ends: 18361 [2021-08-06 13:59:41,523 INFO L226 Difference]: Without dead ends: 18361 [2021-08-06 13:59:41,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1189.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18361 states. [2021-08-06 13:59:41,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18361 to 8656. [2021-08-06 13:59:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 8654 states have (on average 2.664663739311301) internal successors, (23060), 8655 states have internal predecessors, (23060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 23060 transitions. [2021-08-06 13:59:41,736 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 23060 transitions. Word has length 114 [2021-08-06 13:59:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:41,736 INFO L470 AbstractCegarLoop]: Abstraction has 8656 states and 23060 transitions. [2021-08-06 13:59:41,736 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) [2021-08-06 13:59:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 23060 transitions. [2021-08-06 13:59:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:41,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:41,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:41,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-06 13:59:41,747 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)] === [2021-08-06 13:59:41,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:41,747 INFO L82 PathProgramCache]: Analyzing trace with hash 626311618, now seen corresponding path program 29 times [2021-08-06 13:59:41,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:41,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704453256] [2021-08-06 13:59:41,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:41,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:42,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:42,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704453256] [2021-08-06 13:59:42,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704453256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:42,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:42,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:59:42,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90715195] [2021-08-06 13:59:42,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:59:42,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:59:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:59:42,694 INFO L87 Difference]: Start difference. First operand 8656 states and 23060 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:46,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:46,197 INFO L93 Difference]: Finished difference Result 15757 states and 42352 transitions. [2021-08-06 13:59:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 13:59:46,198 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:46,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:46,222 INFO L225 Difference]: With dead ends: 15757 [2021-08-06 13:59:46,222 INFO L226 Difference]: Without dead ends: 15657 [2021-08-06 13:59:46,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 2575.6ms TimeCoverageRelationStatistics Valid=1032, Invalid=3524, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 13:59:46,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15657 states. [2021-08-06 13:59:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15657 to 10426. [2021-08-06 13:59:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10426 states, 10424 states have (on average 2.6915771297006907) internal successors, (28057), 10425 states have internal predecessors, (28057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10426 states to 10426 states and 28057 transitions. [2021-08-06 13:59:46,419 INFO L78 Accepts]: Start accepts. Automaton has 10426 states and 28057 transitions. Word has length 114 [2021-08-06 13:59:46,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:46,419 INFO L470 AbstractCegarLoop]: Abstraction has 10426 states and 28057 transitions. [2021-08-06 13:59:46,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10426 states and 28057 transitions. [2021-08-06 13:59:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:46,432 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:46,432 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] [2021-08-06 13:59:46,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-06 13:59:46,433 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)] === [2021-08-06 13:59:46,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:46,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1850538596, now seen corresponding path program 115 times [2021-08-06 13:59:46,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:46,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030479681] [2021-08-06 13:59:46,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:46,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:46,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:46,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030479681] [2021-08-06 13:59:46,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030479681] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:46,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:46,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:46,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505716361] [2021-08-06 13:59:46,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:46,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:46,840 INFO L87 Difference]: Start difference. First operand 10426 states and 28057 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:48,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:48,307 INFO L93 Difference]: Finished difference Result 23892 states and 63186 transitions. [2021-08-06 13:59:48,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:48,405 INFO L225 Difference]: With dead ends: 23892 [2021-08-06 13:59:48,405 INFO L226 Difference]: Without dead ends: 23892 [2021-08-06 13:59:48,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1202.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23892 states. [2021-08-06 13:59:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23892 to 10424. [2021-08-06 13:59:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10424 states, 10422 states have (on average 2.6910381884475147) internal successors, (28046), 10423 states have internal predecessors, (28046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10424 states to 10424 states and 28046 transitions. [2021-08-06 13:59:48,632 INFO L78 Accepts]: Start accepts. Automaton has 10424 states and 28046 transitions. Word has length 114 [2021-08-06 13:59:48,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:48,632 INFO L470 AbstractCegarLoop]: Abstraction has 10424 states and 28046 transitions. [2021-08-06 13:59:48,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:48,632 INFO L276 IsEmpty]: Start isEmpty. Operand 10424 states and 28046 transitions. [2021-08-06 13:59:48,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:48,644 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:48,645 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] [2021-08-06 13:59:48,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-06 13:59:48,645 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)] === [2021-08-06 13:59:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1373409212, now seen corresponding path program 116 times [2021-08-06 13:59:48,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:48,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785906968] [2021-08-06 13:59:48,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:48,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:49,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:49,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785906968] [2021-08-06 13:59:49,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785906968] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:49,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:49,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:49,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416457665] [2021-08-06 13:59:49,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:49,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:49,051 INFO L87 Difference]: Start difference. First operand 10424 states and 28046 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:50,555 INFO L93 Difference]: Finished difference Result 26492 states and 69867 transitions. [2021-08-06 13:59:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:50,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:50,606 INFO L225 Difference]: With dead ends: 26492 [2021-08-06 13:59:50,606 INFO L226 Difference]: Without dead ends: 26492 [2021-08-06 13:59:50,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1213.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26492 states. [2021-08-06 13:59:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26492 to 10352. [2021-08-06 13:59:50,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10352 states, 10350 states have (on average 2.6894685990338165) internal successors, (27836), 10351 states have internal predecessors, (27836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10352 states to 10352 states and 27836 transitions. [2021-08-06 13:59:50,969 INFO L78 Accepts]: Start accepts. Automaton has 10352 states and 27836 transitions. Word has length 114 [2021-08-06 13:59:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:50,969 INFO L470 AbstractCegarLoop]: Abstraction has 10352 states and 27836 transitions. [2021-08-06 13:59:50,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 10352 states and 27836 transitions. [2021-08-06 13:59:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:50,982 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:50,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:50,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-06 13:59:50,982 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)] === [2021-08-06 13:59:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:50,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1682437986, now seen corresponding path program 117 times [2021-08-06 13:59:50,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:50,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30077263] [2021-08-06 13:59:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:50,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:51,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:51,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:51,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30077263] [2021-08-06 13:59:51,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30077263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:51,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:51,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:51,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481863593] [2021-08-06 13:59:51,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:51,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:51,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:51,407 INFO L87 Difference]: Start difference. First operand 10352 states and 27836 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:52,886 INFO L93 Difference]: Finished difference Result 23252 states and 60823 transitions. [2021-08-06 13:59:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 13:59:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:52,925 INFO L225 Difference]: With dead ends: 23252 [2021-08-06 13:59:52,925 INFO L226 Difference]: Without dead ends: 23252 [2021-08-06 13:59:52,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1259.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 13:59:52,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23252 states. [2021-08-06 13:59:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23252 to 8940. [2021-08-06 13:59:53,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8940 states, 8938 states have (on average 2.6715148802864177) internal successors, (23878), 8939 states have internal predecessors, (23878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8940 states to 8940 states and 23878 transitions. [2021-08-06 13:59:53,164 INFO L78 Accepts]: Start accepts. Automaton has 8940 states and 23878 transitions. Word has length 114 [2021-08-06 13:59:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:53,164 INFO L470 AbstractCegarLoop]: Abstraction has 8940 states and 23878 transitions. [2021-08-06 13:59:53,164 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) [2021-08-06 13:59:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 8940 states and 23878 transitions. [2021-08-06 13:59:53,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:53,175 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:53,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:53,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-06 13:59:53,175 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)] === [2021-08-06 13:59:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:53,176 INFO L82 PathProgramCache]: Analyzing trace with hash -462161568, now seen corresponding path program 30 times [2021-08-06 13:59:53,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:53,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491961728] [2021-08-06 13:59:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:53,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:53,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:54,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:54,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491961728] [2021-08-06 13:59:54,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491961728] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:54,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:54,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 13:59:54,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553438808] [2021-08-06 13:59:54,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 13:59:54,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 13:59:54,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 13:59:54,139 INFO L87 Difference]: Start difference. First operand 8940 states and 23878 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 13:59:57,923 INFO L93 Difference]: Finished difference Result 17520 states and 46926 transitions. [2021-08-06 13:59:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 13:59:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 13:59:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 13:59:57,948 INFO L225 Difference]: With dead ends: 17520 [2021-08-06 13:59:57,948 INFO L226 Difference]: Without dead ends: 17420 [2021-08-06 13:59:57,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 2751.1ms TimeCoverageRelationStatistics Valid=1127, Invalid=3843, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 13:59:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17420 states. [2021-08-06 13:59:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17420 to 10376. [2021-08-06 13:59:58,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10376 states, 10374 states have (on average 2.6901870059764796) internal successors, (27908), 10375 states have internal predecessors, (27908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 27908 transitions. [2021-08-06 13:59:58,121 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 27908 transitions. Word has length 114 [2021-08-06 13:59:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 13:59:58,121 INFO L470 AbstractCegarLoop]: Abstraction has 10376 states and 27908 transitions. [2021-08-06 13:59:58,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 13:59:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 27908 transitions. [2021-08-06 13:59:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 13:59:58,134 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 13:59:58,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 13:59:58,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-06 13:59:58,134 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)] === [2021-08-06 13:59:58,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 13:59:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash 762065410, now seen corresponding path program 118 times [2021-08-06 13:59:58,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 13:59:58,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312715401] [2021-08-06 13:59:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 13:59:58,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 13:59:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 13:59:58,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 13:59:58,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 13:59:58,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312715401] [2021-08-06 13:59:58,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312715401] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 13:59:58,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 13:59:58,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 13:59:58,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799193872] [2021-08-06 13:59:58,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 13:59:58,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 13:59:58,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 13:59:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 13:59:58,560 INFO L87 Difference]: Start difference. First operand 10376 states and 27908 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:00,049 INFO L93 Difference]: Finished difference Result 28782 states and 75422 transitions. [2021-08-06 14:00:00,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:00,049 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 [2021-08-06 14:00:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:00,100 INFO L225 Difference]: With dead ends: 28782 [2021-08-06 14:00:00,101 INFO L226 Difference]: Without dead ends: 28782 [2021-08-06 14:00:00,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1234.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:00,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28782 states. [2021-08-06 14:00:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28782 to 10320. [2021-08-06 14:00:00,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10320 states, 10318 states have (on average 2.688893196355883) internal successors, (27744), 10319 states have internal predecessors, (27744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 27744 transitions. [2021-08-06 14:00:00,462 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 27744 transitions. Word has length 114 [2021-08-06 14:00:00,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:00,462 INFO L470 AbstractCegarLoop]: Abstraction has 10320 states and 27744 transitions. [2021-08-06 14:00:00,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 27744 transitions. [2021-08-06 14:00:00,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:00,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:00,475 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] [2021-08-06 14:00:00,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-06 14:00:00,476 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)] === [2021-08-06 14:00:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash -477054688, now seen corresponding path program 119 times [2021-08-06 14:00:00,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:00,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367114292] [2021-08-06 14:00:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:00,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:00,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:00,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367114292] [2021-08-06 14:00:00,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367114292] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:00,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:00,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:00,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060454570] [2021-08-06 14:00:00,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:00,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:00,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:00,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:00,890 INFO L87 Difference]: Start difference. First operand 10320 states and 27744 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:02,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:02,542 INFO L93 Difference]: Finished difference Result 28183 states and 73190 transitions. [2021-08-06 14:00:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:02,543 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 [2021-08-06 14:00:02,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:02,598 INFO L225 Difference]: With dead ends: 28183 [2021-08-06 14:00:02,598 INFO L226 Difference]: Without dead ends: 28183 [2021-08-06 14:00:02,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1354.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28183 states. [2021-08-06 14:00:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28183 to 8972. [2021-08-06 14:00:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8972 states, 8970 states have (on average 2.6722408026755855) internal successors, (23970), 8971 states have internal predecessors, (23970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 23970 transitions. [2021-08-06 14:00:02,937 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 23970 transitions. Word has length 114 [2021-08-06 14:00:02,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:02,938 INFO L470 AbstractCegarLoop]: Abstraction has 8972 states and 23970 transitions. [2021-08-06 14:00:02,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 23970 transitions. [2021-08-06 14:00:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:02,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:02,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:02,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-08-06 14:00:02,951 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)] === [2021-08-06 14:00:02,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:02,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1383344034, now seen corresponding path program 31 times [2021-08-06 14:00:02,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:02,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065625304] [2021-08-06 14:00:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:02,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:04,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:04,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065625304] [2021-08-06 14:00:04,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065625304] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:04,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:04,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:00:04,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477599814] [2021-08-06 14:00:04,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:00:04,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:00:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:00:04,247 INFO L87 Difference]: Start difference. First operand 8972 states and 23970 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:09,447 INFO L93 Difference]: Finished difference Result 17059 states and 45623 transitions. [2021-08-06 14:00:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-06 14:00:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:09,478 INFO L225 Difference]: With dead ends: 17059 [2021-08-06 14:00:09,478 INFO L226 Difference]: Without dead ends: 16949 [2021-08-06 14:00:09,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 3643.8ms TimeCoverageRelationStatistics Valid=1262, Invalid=4288, Unknown=0, NotChecked=0, Total=5550 [2021-08-06 14:00:09,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16949 states. [2021-08-06 14:00:09,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16949 to 10400. [2021-08-06 14:00:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10398 states have (on average 2.6903250625120214) internal successors, (27974), 10399 states have internal predecessors, (27974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 27974 transitions. [2021-08-06 14:00:09,718 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 27974 transitions. Word has length 114 [2021-08-06 14:00:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:09,718 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 27974 transitions. [2021-08-06 14:00:09,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 27974 transitions. [2021-08-06 14:00:09,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:09,734 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:09,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:09,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-08-06 14:00:09,734 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)] === [2021-08-06 14:00:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:09,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1687396284, now seen corresponding path program 120 times [2021-08-06 14:00:09,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:09,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705129199] [2021-08-06 14:00:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:09,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:10,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:10,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:10,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705129199] [2021-08-06 14:00:10,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705129199] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:10,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:10,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:10,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383278724] [2021-08-06 14:00:10,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:10,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:10,262 INFO L87 Difference]: Start difference. First operand 10400 states and 27974 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:12,220 INFO L93 Difference]: Finished difference Result 29195 states and 76255 transitions. [2021-08-06 14:00:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:12,220 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 [2021-08-06 14:00:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:12,291 INFO L225 Difference]: With dead ends: 29195 [2021-08-06 14:00:12,292 INFO L226 Difference]: Without dead ends: 29195 [2021-08-06 14:00:12,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1618.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29195 states. [2021-08-06 14:00:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29195 to 10312. [2021-08-06 14:00:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10310 states have (on average 2.6884578079534434) internal successors, (27718), 10311 states have internal predecessors, (27718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 27718 transitions. [2021-08-06 14:00:12,787 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 27718 transitions. Word has length 114 [2021-08-06 14:00:12,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:12,787 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 27718 transitions. [2021-08-06 14:00:12,787 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) [2021-08-06 14:00:12,788 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 27718 transitions. [2021-08-06 14:00:12,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:12,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:12,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:12,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-08-06 14:00:12,804 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)] === [2021-08-06 14:00:12,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:12,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1675552384, now seen corresponding path program 121 times [2021-08-06 14:00:12,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:12,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175705276] [2021-08-06 14:00:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:12,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:13,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:13,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175705276] [2021-08-06 14:00:13,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175705276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:13,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:13,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:13,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345810437] [2021-08-06 14:00:13,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:13,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:13,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:13,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:13,327 INFO L87 Difference]: Start difference. First operand 10312 states and 27718 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:15,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:15,333 INFO L93 Difference]: Finished difference Result 23630 states and 61847 transitions. [2021-08-06 14:00:15,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:15,334 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:15,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:15,380 INFO L225 Difference]: With dead ends: 23630 [2021-08-06 14:00:15,380 INFO L226 Difference]: Without dead ends: 23630 [2021-08-06 14:00:15,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1690.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23630 states. [2021-08-06 14:00:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23630 to 8876. [2021-08-06 14:00:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8876 states, 8874 states have (on average 2.6700473292765383) internal successors, (23694), 8875 states have internal predecessors, (23694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8876 states to 8876 states and 23694 transitions. [2021-08-06 14:00:15,669 INFO L78 Accepts]: Start accepts. Automaton has 8876 states and 23694 transitions. Word has length 114 [2021-08-06 14:00:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:15,669 INFO L470 AbstractCegarLoop]: Abstraction has 8876 states and 23694 transitions. [2021-08-06 14:00:15,670 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) [2021-08-06 14:00:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8876 states and 23694 transitions. [2021-08-06 14:00:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:15,683 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:15,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:15,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-08-06 14:00:15,684 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)] === [2021-08-06 14:00:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:15,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692996, now seen corresponding path program 32 times [2021-08-06 14:00:15,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:15,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945378083] [2021-08-06 14:00:15,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:15,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:16,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:16,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945378083] [2021-08-06 14:00:16,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945378083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:16,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:16,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:00:16,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135406329] [2021-08-06 14:00:16,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:00:16,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:00:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:00:16,982 INFO L87 Difference]: Start difference. First operand 8876 states and 23694 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:21,557 INFO L93 Difference]: Finished difference Result 15686 states and 42134 transitions. [2021-08-06 14:00:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-06 14:00:21,557 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:21,584 INFO L225 Difference]: With dead ends: 15686 [2021-08-06 14:00:21,584 INFO L226 Difference]: Without dead ends: 15586 [2021-08-06 14:00:21,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 3049.8ms TimeCoverageRelationStatistics Valid=990, Invalid=3432, Unknown=0, NotChecked=0, Total=4422 [2021-08-06 14:00:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15586 states. [2021-08-06 14:00:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15586 to 10344. [2021-08-06 14:00:21,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 10342 states have (on average 2.6896151614774704) internal successors, (27816), 10343 states have internal predecessors, (27816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 27816 transitions. [2021-08-06 14:00:21,795 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 27816 transitions. Word has length 114 [2021-08-06 14:00:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:21,795 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 27816 transitions. [2021-08-06 14:00:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 27816 transitions. [2021-08-06 14:00:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:21,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:21,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:21,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-08-06 14:00:21,811 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)] === [2021-08-06 14:00:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:21,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1480047322, now seen corresponding path program 122 times [2021-08-06 14:00:21,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:21,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609836263] [2021-08-06 14:00:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:21,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:22,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:22,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609836263] [2021-08-06 14:00:22,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609836263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:22,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:22,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:22,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644156987] [2021-08-06 14:00:22,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:22,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:22,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:22,343 INFO L87 Difference]: Start difference. First operand 10344 states and 27816 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:24,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:24,271 INFO L93 Difference]: Finished difference Result 25366 states and 66810 transitions. [2021-08-06 14:00:24,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:24,271 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 [2021-08-06 14:00:24,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:24,329 INFO L225 Difference]: With dead ends: 25366 [2021-08-06 14:00:24,329 INFO L226 Difference]: Without dead ends: 25366 [2021-08-06 14:00:24,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1609.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:24,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25366 states. [2021-08-06 14:00:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25366 to 10320. [2021-08-06 14:00:24,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10320 states, 10318 states have (on average 2.688893196355883) internal successors, (27744), 10319 states have internal predecessors, (27744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 27744 transitions. [2021-08-06 14:00:24,764 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 27744 transitions. Word has length 114 [2021-08-06 14:00:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:24,764 INFO L470 AbstractCegarLoop]: Abstraction has 10320 states and 27744 transitions. [2021-08-06 14:00:24,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:24,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 27744 transitions. [2021-08-06 14:00:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:24,780 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:24,780 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:24,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-08-06 14:00:24,780 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)] === [2021-08-06 14:00:24,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:24,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1575799876, now seen corresponding path program 123 times [2021-08-06 14:00:24,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:24,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591762417] [2021-08-06 14:00:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:24,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:25,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:25,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591762417] [2021-08-06 14:00:25,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591762417] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:25,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:25,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:25,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528726039] [2021-08-06 14:00:25,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:25,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:25,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:25,299 INFO L87 Difference]: Start difference. First operand 10320 states and 27744 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:27,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:27,241 INFO L93 Difference]: Finished difference Result 24767 states and 64578 transitions. [2021-08-06 14:00:27,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:27,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:27,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:27,299 INFO L225 Difference]: With dead ends: 24767 [2021-08-06 14:00:27,299 INFO L226 Difference]: Without dead ends: 24767 [2021-08-06 14:00:27,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1671.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24767 states. [2021-08-06 14:00:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24767 to 8972. [2021-08-06 14:00:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8972 states, 8970 states have (on average 2.6722408026755855) internal successors, (23970), 8971 states have internal predecessors, (23970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8972 states to 8972 states and 23970 transitions. [2021-08-06 14:00:27,620 INFO L78 Accepts]: Start accepts. Automaton has 8972 states and 23970 transitions. Word has length 114 [2021-08-06 14:00:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:27,621 INFO L470 AbstractCegarLoop]: Abstraction has 8972 states and 23970 transitions. [2021-08-06 14:00:27,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:27,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8972 states and 23970 transitions. [2021-08-06 14:00:27,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:27,635 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:27,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:27,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-08-06 14:00:27,635 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)] === [2021-08-06 14:00:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash -858768698, now seen corresponding path program 33 times [2021-08-06 14:00:27,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:27,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504241626] [2021-08-06 14:00:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:27,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:28,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:28,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504241626] [2021-08-06 14:00:28,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504241626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:28,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:28,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:00:28,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482924330] [2021-08-06 14:00:28,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:00:28,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:00:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:00:28,996 INFO L87 Difference]: Start difference. First operand 8972 states and 23970 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:33,663 INFO L93 Difference]: Finished difference Result 16870 states and 45062 transitions. [2021-08-06 14:00:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 14:00:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:33,689 INFO L225 Difference]: With dead ends: 16870 [2021-08-06 14:00:33,690 INFO L226 Difference]: Without dead ends: 16760 [2021-08-06 14:00:33,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 3506.9ms TimeCoverageRelationStatistics Valid=1125, Invalid=3845, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 14:00:33,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2021-08-06 14:00:33,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 10400. [2021-08-06 14:00:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10400 states, 10398 states have (on average 2.6903250625120214) internal successors, (27974), 10399 states have internal predecessors, (27974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:33,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10400 states to 10400 states and 27974 transitions. [2021-08-06 14:00:33,915 INFO L78 Accepts]: Start accepts. Automaton has 10400 states and 27974 transitions. Word has length 114 [2021-08-06 14:00:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:33,916 INFO L470 AbstractCegarLoop]: Abstraction has 10400 states and 27974 transitions. [2021-08-06 14:00:33,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10400 states and 27974 transitions. [2021-08-06 14:00:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:33,929 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:33,929 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] [2021-08-06 14:00:33,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-08-06 14:00:33,929 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)] === [2021-08-06 14:00:33,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:33,929 INFO L82 PathProgramCache]: Analyzing trace with hash 365458280, now seen corresponding path program 124 times [2021-08-06 14:00:33,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:33,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069885174] [2021-08-06 14:00:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:33,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:34,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:34,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069885174] [2021-08-06 14:00:34,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069885174] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:34,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:34,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:34,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529433651] [2021-08-06 14:00:34,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:34,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:34,423 INFO L87 Difference]: Start difference. First operand 10400 states and 27974 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:36,542 INFO L93 Difference]: Finished difference Result 30678 states and 79918 transitions. [2021-08-06 14:00:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:36,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:36,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:36,622 INFO L225 Difference]: With dead ends: 30678 [2021-08-06 14:00:36,622 INFO L226 Difference]: Without dead ends: 30678 [2021-08-06 14:00:36,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1677.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30678 states. [2021-08-06 14:00:37,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30678 to 10312. [2021-08-06 14:00:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10310 states have (on average 2.6884578079534434) internal successors, (27718), 10311 states have internal predecessors, (27718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 27718 transitions. [2021-08-06 14:00:37,188 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 27718 transitions. Word has length 114 [2021-08-06 14:00:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:37,188 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 27718 transitions. [2021-08-06 14:00:37,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 27718 transitions. [2021-08-06 14:00:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:37,205 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:37,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:37,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-08-06 14:00:37,205 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)] === [2021-08-06 14:00:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash -566560348, now seen corresponding path program 125 times [2021-08-06 14:00:37,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:37,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036680942] [2021-08-06 14:00:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:37,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:37,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:37,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036680942] [2021-08-06 14:00:37,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036680942] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:37,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:37,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:37,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381053316] [2021-08-06 14:00:37,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:37,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:37,728 INFO L87 Difference]: Start difference. First operand 10312 states and 27718 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:39,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:39,625 INFO L93 Difference]: Finished difference Result 25113 states and 65510 transitions. [2021-08-06 14:00:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:39,626 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 [2021-08-06 14:00:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:39,686 INFO L225 Difference]: With dead ends: 25113 [2021-08-06 14:00:39,686 INFO L226 Difference]: Without dead ends: 25113 [2021-08-06 14:00:39,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1623.6ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25113 states. [2021-08-06 14:00:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25113 to 8940. [2021-08-06 14:00:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8940 states, 8938 states have (on average 2.6715148802864177) internal successors, (23878), 8939 states have internal predecessors, (23878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8940 states to 8940 states and 23878 transitions. [2021-08-06 14:00:40,006 INFO L78 Accepts]: Start accepts. Automaton has 8940 states and 23878 transitions. Word has length 114 [2021-08-06 14:00:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:40,006 INFO L470 AbstractCegarLoop]: Abstraction has 8940 states and 23878 transitions. [2021-08-06 14:00:40,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 8940 states and 23878 transitions. [2021-08-06 14:00:40,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:40,021 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:40,022 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] [2021-08-06 14:00:40,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-08-06 14:00:40,022 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)] === [2021-08-06 14:00:40,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:40,022 INFO L82 PathProgramCache]: Analyzing trace with hash -726010944, now seen corresponding path program 34 times [2021-08-06 14:00:40,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:40,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080559632] [2021-08-06 14:00:40,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:40,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:41,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:41,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:41,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080559632] [2021-08-06 14:00:41,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080559632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:41,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:41,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:00:41,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287154671] [2021-08-06 14:00:41,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:00:41,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:41,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:00:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:00:41,292 INFO L87 Difference]: Start difference. First operand 8940 states and 23878 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:45,525 INFO L93 Difference]: Finished difference Result 16286 states and 43582 transitions. [2021-08-06 14:00:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 14:00:45,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:45,554 INFO L225 Difference]: With dead ends: 16286 [2021-08-06 14:00:45,554 INFO L226 Difference]: Without dead ends: 16134 [2021-08-06 14:00:45,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 2903.2ms TimeCoverageRelationStatistics Valid=1022, Invalid=3534, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 14:00:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2021-08-06 14:00:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 11336. [2021-08-06 14:00:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11336 states, 11334 states have (on average 2.702841009352391) internal successors, (30634), 11335 states have internal predecessors, (30634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11336 states to 11336 states and 30634 transitions. [2021-08-06 14:00:45,806 INFO L78 Accepts]: Start accepts. Automaton has 11336 states and 30634 transitions. Word has length 114 [2021-08-06 14:00:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:45,807 INFO L470 AbstractCegarLoop]: Abstraction has 11336 states and 30634 transitions. [2021-08-06 14:00:45,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:45,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11336 states and 30634 transitions. [2021-08-06 14:00:45,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:45,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:45,825 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] [2021-08-06 14:00:45,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-08-06 14:00:45,825 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)] === [2021-08-06 14:00:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:45,826 INFO L82 PathProgramCache]: Analyzing trace with hash 498216034, now seen corresponding path program 126 times [2021-08-06 14:00:45,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:45,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142174960] [2021-08-06 14:00:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:45,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:46,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:46,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142174960] [2021-08-06 14:00:46,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142174960] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:46,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:46,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:46,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967060277] [2021-08-06 14:00:46,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:46,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:46,352 INFO L87 Difference]: Start difference. First operand 11336 states and 30634 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:48,385 INFO L93 Difference]: Finished difference Result 26995 states and 71015 transitions. [2021-08-06 14:00:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:48,451 INFO L225 Difference]: With dead ends: 26995 [2021-08-06 14:00:48,451 INFO L226 Difference]: Without dead ends: 26995 [2021-08-06 14:00:48,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1633.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:48,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26995 states. [2021-08-06 14:00:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26995 to 11280. [2021-08-06 14:00:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11280 states, 11278 states have (on average 2.7017201631494947) internal successors, (30470), 11279 states have internal predecessors, (30470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:48,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11280 states to 11280 states and 30470 transitions. [2021-08-06 14:00:48,951 INFO L78 Accepts]: Start accepts. Automaton has 11280 states and 30470 transitions. Word has length 114 [2021-08-06 14:00:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:48,951 INFO L470 AbstractCegarLoop]: Abstraction has 11280 states and 30470 transitions. [2021-08-06 14:00:48,951 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) [2021-08-06 14:00:48,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11280 states and 30470 transitions. [2021-08-06 14:00:48,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:48,968 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:48,969 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:48,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-08-06 14:00:48,969 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)] === [2021-08-06 14:00:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:48,969 INFO L82 PathProgramCache]: Analyzing trace with hash -433802594, now seen corresponding path program 127 times [2021-08-06 14:00:48,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:48,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013119953] [2021-08-06 14:00:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:48,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:49,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:49,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013119953] [2021-08-06 14:00:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013119953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:49,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857565029] [2021-08-06 14:00:49,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:49,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:49,484 INFO L87 Difference]: Start difference. First operand 11280 states and 30470 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:51,402 INFO L93 Difference]: Finished difference Result 26735 states and 70331 transitions. [2021-08-06 14:00:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:51,468 INFO L225 Difference]: With dead ends: 26735 [2021-08-06 14:00:51,468 INFO L226 Difference]: Without dead ends: 26735 [2021-08-06 14:00:51,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1622.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26735 states. [2021-08-06 14:00:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26735 to 11248. [2021-08-06 14:00:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 11246 states have (on average 2.701227102969945) internal successors, (30378), 11247 states have internal predecessors, (30378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 30378 transitions. [2021-08-06 14:00:51,848 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 30378 transitions. Word has length 114 [2021-08-06 14:00:51,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:51,848 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 30378 transitions. [2021-08-06 14:00:51,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:51,848 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 30378 transitions. [2021-08-06 14:00:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:51,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:51,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:51,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-08-06 14:00:51,870 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)] === [2021-08-06 14:00:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 369462022, now seen corresponding path program 128 times [2021-08-06 14:00:51,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:51,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4464287] [2021-08-06 14:00:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:51,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:52,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:52,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:52,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4464287] [2021-08-06 14:00:52,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4464287] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:52,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:52,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:00:52,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984103196] [2021-08-06 14:00:52,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:00:52,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:52,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:00:52,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:00:52,634 INFO L87 Difference]: Start difference. First operand 11248 states and 30378 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:00:54,478 INFO L93 Difference]: Finished difference Result 21574 states and 56965 transitions. [2021-08-06 14:00:54,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:00:54,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:00:54,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:00:54,523 INFO L225 Difference]: With dead ends: 21574 [2021-08-06 14:00:54,523 INFO L226 Difference]: Without dead ends: 21574 [2021-08-06 14:00:54,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1652.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:00:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21574 states. [2021-08-06 14:00:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21574 to 9492. [2021-08-06 14:00:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 9490 states have (on average 2.6800842992623815) internal successors, (25434), 9491 states have internal predecessors, (25434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 25434 transitions. [2021-08-06 14:00:54,829 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 25434 transitions. Word has length 114 [2021-08-06 14:00:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:00:54,829 INFO L470 AbstractCegarLoop]: Abstraction has 9492 states and 25434 transitions. [2021-08-06 14:00:54,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:00:54,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 25434 transitions. [2021-08-06 14:00:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:00:54,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:00:54,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:00:54,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-08-06 14:00:54,843 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)] === [2021-08-06 14:00:54,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:00:54,844 INFO L82 PathProgramCache]: Analyzing trace with hash -211709022, now seen corresponding path program 35 times [2021-08-06 14:00:54,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:00:54,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995576337] [2021-08-06 14:00:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:00:54,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:00:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:00:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:00:56,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:00:56,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995576337] [2021-08-06 14:00:56,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995576337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:00:56,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:00:56,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:00:56,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676315688] [2021-08-06 14:00:56,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:00:56,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:00:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:00:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:00:56,145 INFO L87 Difference]: Start difference. First operand 9492 states and 25434 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:01,227 INFO L93 Difference]: Finished difference Result 17182 states and 46166 transitions. [2021-08-06 14:01:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-06 14:01:01,227 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:01,261 INFO L225 Difference]: With dead ends: 17182 [2021-08-06 14:01:01,261 INFO L226 Difference]: Without dead ends: 17088 [2021-08-06 14:01:01,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 3600.3ms TimeCoverageRelationStatistics Valid=1166, Invalid=3946, Unknown=0, NotChecked=0, Total=5112 [2021-08-06 14:01:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17088 states. [2021-08-06 14:01:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17088 to 11080. [2021-08-06 14:01:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11080 states, 11078 states have (on average 2.699945838599025) internal successors, (29910), 11079 states have internal predecessors, (29910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:01,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11080 states to 11080 states and 29910 transitions. [2021-08-06 14:01:01,609 INFO L78 Accepts]: Start accepts. Automaton has 11080 states and 29910 transitions. Word has length 114 [2021-08-06 14:01:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:01,609 INFO L470 AbstractCegarLoop]: Abstraction has 11080 states and 29910 transitions. [2021-08-06 14:01:01,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:01,609 INFO L276 IsEmpty]: Start isEmpty. Operand 11080 states and 29910 transitions. [2021-08-06 14:01:01,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:01,627 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:01,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:01,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-08-06 14:01:01,627 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)] === [2021-08-06 14:01:01,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:01,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1012517956, now seen corresponding path program 129 times [2021-08-06 14:01:01,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:01,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29939314] [2021-08-06 14:01:01,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:01,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:02,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29939314] [2021-08-06 14:01:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29939314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:02,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:02,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893742786] [2021-08-06 14:01:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:02,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:02,762 INFO L87 Difference]: Start difference. First operand 11080 states and 29910 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:05,058 INFO L93 Difference]: Finished difference Result 29708 states and 78752 transitions. [2021-08-06 14:01:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:05,125 INFO L225 Difference]: With dead ends: 29708 [2021-08-06 14:01:05,126 INFO L226 Difference]: Without dead ends: 29708 [2021-08-06 14:01:05,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2093.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:05,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29708 states. [2021-08-06 14:01:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29708 to 11192. [2021-08-06 14:01:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11192 states, 11190 states have (on average 2.701697944593387) internal successors, (30232), 11191 states have internal predecessors, (30232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11192 states to 11192 states and 30232 transitions. [2021-08-06 14:01:05,512 INFO L78 Accepts]: Start accepts. Automaton has 11192 states and 30232 transitions. Word has length 114 [2021-08-06 14:01:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:05,512 INFO L470 AbstractCegarLoop]: Abstraction has 11192 states and 30232 transitions. [2021-08-06 14:01:05,513 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) [2021-08-06 14:01:05,513 INFO L276 IsEmpty]: Start isEmpty. Operand 11192 states and 30232 transitions. [2021-08-06 14:01:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:05,530 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:05,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:05,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-08-06 14:01:05,531 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)] === [2021-08-06 14:01:05,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2083537444, now seen corresponding path program 130 times [2021-08-06 14:01:05,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:05,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240770647] [2021-08-06 14:01:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:05,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:06,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:06,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240770647] [2021-08-06 14:01:06,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240770647] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:06,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:06,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:06,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029938295] [2021-08-06 14:01:06,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:06,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:06,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:06,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:06,100 INFO L87 Difference]: Start difference. First operand 11192 states and 30232 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:08,136 INFO L93 Difference]: Finished difference Result 32196 states and 85157 transitions. [2021-08-06 14:01:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:08,136 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 [2021-08-06 14:01:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:08,209 INFO L225 Difference]: With dead ends: 32196 [2021-08-06 14:01:08,210 INFO L226 Difference]: Without dead ends: 32196 [2021-08-06 14:01:08,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1577.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32196 states. [2021-08-06 14:01:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32196 to 11224. [2021-08-06 14:01:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11224 states, 11222 states have (on average 2.7021921226162893) internal successors, (30324), 11223 states have internal predecessors, (30324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11224 states to 11224 states and 30324 transitions. [2021-08-06 14:01:08,657 INFO L78 Accepts]: Start accepts. Automaton has 11224 states and 30324 transitions. Word has length 114 [2021-08-06 14:01:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:08,657 INFO L470 AbstractCegarLoop]: Abstraction has 11224 states and 30324 transitions. [2021-08-06 14:01:08,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11224 states and 30324 transitions. [2021-08-06 14:01:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:08,674 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:08,674 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:08,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-08-06 14:01:08,674 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)] === [2021-08-06 14:01:08,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:08,675 INFO L82 PathProgramCache]: Analyzing trace with hash 844417346, now seen corresponding path program 131 times [2021-08-06 14:01:08,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:08,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309179478] [2021-08-06 14:01:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:08,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:09,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:09,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:09,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309179478] [2021-08-06 14:01:09,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309179478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:09,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:09,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:09,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051032219] [2021-08-06 14:01:09,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:09,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:09,231 INFO L87 Difference]: Start difference. First operand 11224 states and 30324 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:11,162 INFO L93 Difference]: Finished difference Result 28956 states and 76113 transitions. [2021-08-06 14:01:11,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:11,231 INFO L225 Difference]: With dead ends: 28956 [2021-08-06 14:01:11,231 INFO L226 Difference]: Without dead ends: 28956 [2021-08-06 14:01:11,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1648.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:11,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28956 states. [2021-08-06 14:01:11,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28956 to 11128. [2021-08-06 14:01:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11128 states, 11126 states have (on average 2.700701060578824) internal successors, (30048), 11127 states have internal predecessors, (30048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11128 states to 11128 states and 30048 transitions. [2021-08-06 14:01:11,642 INFO L78 Accepts]: Start accepts. Automaton has 11128 states and 30048 transitions. Word has length 114 [2021-08-06 14:01:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:11,643 INFO L470 AbstractCegarLoop]: Abstraction has 11128 states and 30048 transitions. [2021-08-06 14:01:11,643 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) [2021-08-06 14:01:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 11128 states and 30048 transitions. [2021-08-06 14:01:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:11,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:11,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:11,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-08-06 14:01:11,660 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)] === [2021-08-06 14:01:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1300182208, now seen corresponding path program 36 times [2021-08-06 14:01:11,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:11,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435861613] [2021-08-06 14:01:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:11,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:12,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:12,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435861613] [2021-08-06 14:01:12,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435861613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:12,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:12,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:01:12,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304948554] [2021-08-06 14:01:12,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:01:12,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:12,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:01:12,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:01:12,835 INFO L87 Difference]: Start difference. First operand 11128 states and 30048 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:18,350 INFO L93 Difference]: Finished difference Result 19811 states and 53189 transitions. [2021-08-06 14:01:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-06 14:01:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:18,380 INFO L225 Difference]: With dead ends: 19811 [2021-08-06 14:01:18,381 INFO L226 Difference]: Without dead ends: 19717 [2021-08-06 14:01:18,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 3760.9ms TimeCoverageRelationStatistics Valid=1261, Invalid=4289, Unknown=0, NotChecked=0, Total=5550 [2021-08-06 14:01:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19717 states. [2021-08-06 14:01:18,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19717 to 11080. [2021-08-06 14:01:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11080 states, 11078 states have (on average 2.699945838599025) internal successors, (29910), 11079 states have internal predecessors, (29910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11080 states to 11080 states and 29910 transitions. [2021-08-06 14:01:18,637 INFO L78 Accepts]: Start accepts. Automaton has 11080 states and 29910 transitions. Word has length 114 [2021-08-06 14:01:18,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:18,637 INFO L470 AbstractCegarLoop]: Abstraction has 11080 states and 29910 transitions. [2021-08-06 14:01:18,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:18,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11080 states and 29910 transitions. [2021-08-06 14:01:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:18,655 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:18,655 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-08-06 14:01:18,655 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)] === [2021-08-06 14:01:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash -75955230, now seen corresponding path program 132 times [2021-08-06 14:01:18,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:18,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672575522] [2021-08-06 14:01:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:18,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:19,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:19,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672575522] [2021-08-06 14:01:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672575522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:19,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:19,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:19,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446241112] [2021-08-06 14:01:19,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:19,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:19,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:19,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:19,138 INFO L87 Difference]: Start difference. First operand 11080 states and 29910 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:20,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:20,998 INFO L93 Difference]: Finished difference Result 29882 states and 78964 transitions. [2021-08-06 14:01:20,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:20,998 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:21,058 INFO L225 Difference]: With dead ends: 29882 [2021-08-06 14:01:21,058 INFO L226 Difference]: Without dead ends: 29882 [2021-08-06 14:01:21,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1562.0ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29882 states. [2021-08-06 14:01:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29882 to 11128. [2021-08-06 14:01:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11128 states, 11126 states have (on average 2.700701060578824) internal successors, (30048), 11127 states have internal predecessors, (30048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11128 states to 11128 states and 30048 transitions. [2021-08-06 14:01:21,465 INFO L78 Accepts]: Start accepts. Automaton has 11128 states and 30048 transitions. Word has length 114 [2021-08-06 14:01:21,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:21,465 INFO L470 AbstractCegarLoop]: Abstraction has 11128 states and 30048 transitions. [2021-08-06 14:01:21,465 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) [2021-08-06 14:01:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 11128 states and 30048 transitions. [2021-08-06 14:01:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:21,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:21,480 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] [2021-08-06 14:01:21,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-08-06 14:01:21,480 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)] === [2021-08-06 14:01:21,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:21,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1315075328, now seen corresponding path program 133 times [2021-08-06 14:01:21,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:21,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375963503] [2021-08-06 14:01:21,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:21,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:21,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:21,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375963503] [2021-08-06 14:01:21,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375963503] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:21,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:21,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:21,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974932737] [2021-08-06 14:01:21,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:21,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:21,945 INFO L87 Difference]: Start difference. First operand 11128 states and 30048 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:23,646 INFO L93 Difference]: Finished difference Result 29171 states and 76456 transitions. [2021-08-06 14:01:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:23,711 INFO L225 Difference]: With dead ends: 29171 [2021-08-06 14:01:23,711 INFO L226 Difference]: Without dead ends: 29171 [2021-08-06 14:01:23,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1374.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29171 states. [2021-08-06 14:01:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29171 to 11096. [2021-08-06 14:01:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11096 states, 11094 states have (on average 2.700198305390301) internal successors, (29956), 11095 states have internal predecessors, (29956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11096 states to 11096 states and 29956 transitions. [2021-08-06 14:01:24,123 INFO L78 Accepts]: Start accepts. Automaton has 11096 states and 29956 transitions. Word has length 114 [2021-08-06 14:01:24,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:24,124 INFO L470 AbstractCegarLoop]: Abstraction has 11096 states and 29956 transitions. [2021-08-06 14:01:24,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand 11096 states and 29956 transitions. [2021-08-06 14:01:24,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:24,140 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:24,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:24,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-08-06 14:01:24,141 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)] === [2021-08-06 14:01:24,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:24,141 INFO L82 PathProgramCache]: Analyzing trace with hash 545323394, now seen corresponding path program 37 times [2021-08-06 14:01:24,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:24,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280924173] [2021-08-06 14:01:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:24,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:25,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:25,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280924173] [2021-08-06 14:01:25,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280924173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:25,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:25,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:01:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078396848] [2021-08-06 14:01:25,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:01:25,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:25,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:01:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:01:25,369 INFO L87 Difference]: Start difference. First operand 11096 states and 29956 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:30,115 INFO L93 Difference]: Finished difference Result 19052 states and 51062 transitions. [2021-08-06 14:01:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-06 14:01:30,115 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:30,145 INFO L225 Difference]: With dead ends: 19052 [2021-08-06 14:01:30,145 INFO L226 Difference]: Without dead ends: 18950 [2021-08-06 14:01:30,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 3431.6ms TimeCoverageRelationStatistics Valid=1357, Invalid=4649, Unknown=0, NotChecked=0, Total=6006 [2021-08-06 14:01:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18950 states. [2021-08-06 14:01:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18950 to 10720. [2021-08-06 14:01:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10720 states, 10718 states have (on average 2.6969583877589103) internal successors, (28906), 10719 states have internal predecessors, (28906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10720 states to 10720 states and 28906 transitions. [2021-08-06 14:01:30,358 INFO L78 Accepts]: Start accepts. Automaton has 10720 states and 28906 transitions. Word has length 114 [2021-08-06 14:01:30,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:30,358 INFO L470 AbstractCegarLoop]: Abstraction has 10720 states and 28906 transitions. [2021-08-06 14:01:30,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 10720 states and 28906 transitions. [2021-08-06 14:01:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:30,372 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:30,372 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:30,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-08-06 14:01:30,372 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)] === [2021-08-06 14:01:30,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1769550372, now seen corresponding path program 134 times [2021-08-06 14:01:30,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:30,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064789162] [2021-08-06 14:01:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:30,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:30,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:30,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064789162] [2021-08-06 14:01:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064789162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:30,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:30,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113489207] [2021-08-06 14:01:30,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:30,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:30,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:30,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:30,821 INFO L87 Difference]: Start difference. First operand 10720 states and 28906 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:32,328 INFO L93 Difference]: Finished difference Result 29511 states and 77681 transitions. [2021-08-06 14:01:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:32,328 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 [2021-08-06 14:01:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:32,380 INFO L225 Difference]: With dead ends: 29511 [2021-08-06 14:01:32,381 INFO L226 Difference]: Without dead ends: 29511 [2021-08-06 14:01:32,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1297.3ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:32,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29511 states. [2021-08-06 14:01:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29511 to 10736. [2021-08-06 14:01:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10736 states, 10734 states have (on average 2.6972237749208126) internal successors, (28952), 10735 states have internal predecessors, (28952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 28952 transitions. [2021-08-06 14:01:32,666 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 28952 transitions. Word has length 114 [2021-08-06 14:01:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:32,666 INFO L470 AbstractCegarLoop]: Abstraction has 10736 states and 28952 transitions. [2021-08-06 14:01:32,666 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) [2021-08-06 14:01:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 28952 transitions. [2021-08-06 14:01:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:32,679 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:32,679 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] [2021-08-06 14:01:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-08-06 14:01:32,679 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)] === [2021-08-06 14:01:32,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:32,679 INFO L82 PathProgramCache]: Analyzing trace with hash 837531744, now seen corresponding path program 135 times [2021-08-06 14:01:32,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:32,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805334306] [2021-08-06 14:01:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:32,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:33,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:33,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805334306] [2021-08-06 14:01:33,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805334306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:33,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:33,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:33,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156343525] [2021-08-06 14:01:33,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:33,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:33,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:33,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:33,091 INFO L87 Difference]: Start difference. First operand 10736 states and 28952 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:34,549 INFO L93 Difference]: Finished difference Result 24480 states and 64647 transitions. [2021-08-06 14:01:34,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:34,550 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:34,591 INFO L225 Difference]: With dead ends: 24480 [2021-08-06 14:01:34,592 INFO L226 Difference]: Without dead ends: 24480 [2021-08-06 14:01:34,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1237.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:34,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24480 states. [2021-08-06 14:01:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24480 to 10512. [2021-08-06 14:01:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10512 states, 10510 states have (on average 2.6934348239771646) internal successors, (28308), 10511 states have internal predecessors, (28308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10512 states to 10512 states and 28308 transitions. [2021-08-06 14:01:34,904 INFO L78 Accepts]: Start accepts. Automaton has 10512 states and 28308 transitions. Word has length 114 [2021-08-06 14:01:34,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:34,904 INFO L470 AbstractCegarLoop]: Abstraction has 10512 states and 28308 transitions. [2021-08-06 14:01:34,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 10512 states and 28308 transitions. [2021-08-06 14:01:34,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:34,917 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:34,917 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:34,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-08-06 14:01:34,917 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)] === [2021-08-06 14:01:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:34,918 INFO L82 PathProgramCache]: Analyzing trace with hash -534172348, now seen corresponding path program 136 times [2021-08-06 14:01:34,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:34,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927951386] [2021-08-06 14:01:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:34,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:35,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:35,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927951386] [2021-08-06 14:01:35,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927951386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:35,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:35,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:35,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279987510] [2021-08-06 14:01:35,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:35,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:35,353 INFO L87 Difference]: Start difference. First operand 10512 states and 28308 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:36,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:36,840 INFO L93 Difference]: Finished difference Result 25420 states and 67737 transitions. [2021-08-06 14:01:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:36,886 INFO L225 Difference]: With dead ends: 25420 [2021-08-06 14:01:36,887 INFO L226 Difference]: Without dead ends: 25420 [2021-08-06 14:01:36,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1212.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25420 states. [2021-08-06 14:01:37,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25420 to 10560. [2021-08-06 14:01:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10560 states, 10558 states have (on average 2.694260276567532) internal successors, (28446), 10559 states have internal predecessors, (28446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10560 states to 10560 states and 28446 transitions. [2021-08-06 14:01:37,145 INFO L78 Accepts]: Start accepts. Automaton has 10560 states and 28446 transitions. Word has length 114 [2021-08-06 14:01:37,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:37,145 INFO L470 AbstractCegarLoop]: Abstraction has 10560 states and 28446 transitions. [2021-08-06 14:01:37,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:37,145 INFO L276 IsEmpty]: Start isEmpty. Operand 10560 states and 28446 transitions. [2021-08-06 14:01:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:37,158 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:37,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:37,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-08-06 14:01:37,159 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)] === [2021-08-06 14:01:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash 536847140, now seen corresponding path program 137 times [2021-08-06 14:01:37,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:37,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301175598] [2021-08-06 14:01:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:37,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:37,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:37,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301175598] [2021-08-06 14:01:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301175598] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:37,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:37,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323434287] [2021-08-06 14:01:37,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:37,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:37,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:37,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:37,617 INFO L87 Difference]: Start difference. First operand 10560 states and 28446 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:39,091 INFO L93 Difference]: Finished difference Result 25564 states and 68001 transitions. [2021-08-06 14:01:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:39,092 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 [2021-08-06 14:01:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:39,137 INFO L225 Difference]: With dead ends: 25564 [2021-08-06 14:01:39,137 INFO L226 Difference]: Without dead ends: 25564 [2021-08-06 14:01:39,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1232.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25564 states. [2021-08-06 14:01:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25564 to 10576. [2021-08-06 14:01:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10576 states, 10574 states have (on average 2.694533762057878) internal successors, (28492), 10575 states have internal predecessors, (28492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10576 states to 10576 states and 28492 transitions. [2021-08-06 14:01:39,411 INFO L78 Accepts]: Start accepts. Automaton has 10576 states and 28492 transitions. Word has length 114 [2021-08-06 14:01:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:39,411 INFO L470 AbstractCegarLoop]: Abstraction has 10576 states and 28492 transitions. [2021-08-06 14:01:39,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10576 states and 28492 transitions. [2021-08-06 14:01:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:39,424 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:39,425 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:39,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-08-06 14:01:39,425 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)] === [2021-08-06 14:01:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash -702272958, now seen corresponding path program 138 times [2021-08-06 14:01:39,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:39,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973507063] [2021-08-06 14:01:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:39,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:39,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:39,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973507063] [2021-08-06 14:01:39,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973507063] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:39,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:39,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:39,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330374436] [2021-08-06 14:01:39,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:39,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:39,919 INFO L87 Difference]: Start difference. First operand 10576 states and 28492 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:41,853 INFO L93 Difference]: Finished difference Result 24354 states and 64103 transitions. [2021-08-06 14:01:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:41,899 INFO L225 Difference]: With dead ends: 24354 [2021-08-06 14:01:41,899 INFO L226 Difference]: Without dead ends: 24354 [2021-08-06 14:01:41,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1644.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24354 states. [2021-08-06 14:01:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24354 to 10368. [2021-08-06 14:01:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 10366 states have (on average 2.690912598880957) internal successors, (27894), 10367 states have internal predecessors, (27894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 27894 transitions. [2021-08-06 14:01:42,201 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 27894 transitions. Word has length 114 [2021-08-06 14:01:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:42,201 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 27894 transitions. [2021-08-06 14:01:42,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 27894 transitions. [2021-08-06 14:01:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:42,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:42,215 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] [2021-08-06 14:01:42,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-08-06 14:01:42,216 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)] === [2021-08-06 14:01:42,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:42,216 INFO L82 PathProgramCache]: Analyzing trace with hash -789654234, now seen corresponding path program 139 times [2021-08-06 14:01:42,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:42,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746398841] [2021-08-06 14:01:42,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:42,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:42,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:42,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746398841] [2021-08-06 14:01:42,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746398841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:42,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:42,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:42,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956372025] [2021-08-06 14:01:42,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:42,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:42,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:42,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:42,712 INFO L87 Difference]: Start difference. First operand 10368 states and 27894 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:44,198 INFO L93 Difference]: Finished difference Result 18102 states and 47800 transitions. [2021-08-06 14:01:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:44,198 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 [2021-08-06 14:01:44,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:44,226 INFO L225 Difference]: With dead ends: 18102 [2021-08-06 14:01:44,226 INFO L226 Difference]: Without dead ends: 18102 [2021-08-06 14:01:44,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1248.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18102 states. [2021-08-06 14:01:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18102 to 8684. [2021-08-06 14:01:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8684 states, 8682 states have (on average 2.6655148583275743) internal successors, (23142), 8683 states have internal predecessors, (23142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 23142 transitions. [2021-08-06 14:01:44,403 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 23142 transitions. Word has length 114 [2021-08-06 14:01:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:44,403 INFO L470 AbstractCegarLoop]: Abstraction has 8684 states and 23142 transitions. [2021-08-06 14:01:44,403 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) [2021-08-06 14:01:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 23142 transitions. [2021-08-06 14:01:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:44,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:44,414 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] [2021-08-06 14:01:44,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-08-06 14:01:44,414 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)] === [2021-08-06 14:01:44,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:44,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1923370912, now seen corresponding path program 38 times [2021-08-06 14:01:44,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:44,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893387638] [2021-08-06 14:01:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:44,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:45,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:45,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893387638] [2021-08-06 14:01:45,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893387638] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:45,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:45,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:01:45,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956414764] [2021-08-06 14:01:45,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:01:45,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:01:45,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:01:45,378 INFO L87 Difference]: Start difference. First operand 8684 states and 23142 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:49,757 INFO L93 Difference]: Finished difference Result 14687 states and 39273 transitions. [2021-08-06 14:01:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-06 14:01:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:49,790 INFO L225 Difference]: With dead ends: 14687 [2021-08-06 14:01:49,790 INFO L226 Difference]: Without dead ends: 14587 [2021-08-06 14:01:49,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 3087.1ms TimeCoverageRelationStatistics Valid=1061, Invalid=3631, Unknown=0, NotChecked=0, Total=4692 [2021-08-06 14:01:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14587 states. [2021-08-06 14:01:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14587 to 10436. [2021-08-06 14:01:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10436 states, 10434 states have (on average 2.69196856430899) internal successors, (28088), 10435 states have internal predecessors, (28088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 28088 transitions. [2021-08-06 14:01:50,025 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 28088 transitions. Word has length 114 [2021-08-06 14:01:50,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:50,025 INFO L470 AbstractCegarLoop]: Abstraction has 10436 states and 28088 transitions. [2021-08-06 14:01:50,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 28088 transitions. [2021-08-06 14:01:50,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:50,042 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:50,042 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] [2021-08-06 14:01:50,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-08-06 14:01:50,042 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)] === [2021-08-06 14:01:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:50,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1147369406, now seen corresponding path program 140 times [2021-08-06 14:01:50,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:50,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953256599] [2021-08-06 14:01:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:50,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:50,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:50,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953256599] [2021-08-06 14:01:50,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953256599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:50,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:50,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:50,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630140091] [2021-08-06 14:01:50,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:50,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:50,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:50,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:50,526 INFO L87 Difference]: Start difference. First operand 10436 states and 28088 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:52,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:52,483 INFO L93 Difference]: Finished difference Result 17301 states and 45691 transitions. [2021-08-06 14:01:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:52,483 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:52,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:52,517 INFO L225 Difference]: With dead ends: 17301 [2021-08-06 14:01:52,517 INFO L226 Difference]: Without dead ends: 17301 [2021-08-06 14:01:52,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1631.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:52,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17301 states. [2021-08-06 14:01:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17301 to 10416. [2021-08-06 14:01:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10416 states, 10414 states have (on average 2.6911849433454966) internal successors, (28026), 10415 states have internal predecessors, (28026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10416 states to 10416 states and 28026 transitions. [2021-08-06 14:01:52,790 INFO L78 Accepts]: Start accepts. Automaton has 10416 states and 28026 transitions. Word has length 114 [2021-08-06 14:01:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:52,790 INFO L470 AbstractCegarLoop]: Abstraction has 10416 states and 28026 transitions. [2021-08-06 14:01:52,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 10416 states and 28026 transitions. [2021-08-06 14:01:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:52,806 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:52,806 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:52,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-08-06 14:01:52,807 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)] === [2021-08-06 14:01:52,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:52,807 INFO L82 PathProgramCache]: Analyzing trace with hash -76349918, now seen corresponding path program 141 times [2021-08-06 14:01:52,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:52,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175030279] [2021-08-06 14:01:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:52,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:53,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:53,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175030279] [2021-08-06 14:01:53,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175030279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:53,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:53,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:53,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676098486] [2021-08-06 14:01:53,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:53,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:53,577 INFO L87 Difference]: Start difference. First operand 10416 states and 28026 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:55,431 INFO L93 Difference]: Finished difference Result 19901 states and 52372 transitions. [2021-08-06 14:01:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:55,431 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:01:55,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:55,475 INFO L225 Difference]: With dead ends: 19901 [2021-08-06 14:01:55,476 INFO L226 Difference]: Without dead ends: 19901 [2021-08-06 14:01:55,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1782.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19901 states. [2021-08-06 14:01:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19901 to 10344. [2021-08-06 14:01:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10344 states, 10342 states have (on average 2.6896151614774704) internal successors, (27816), 10343 states have internal predecessors, (27816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10344 states to 10344 states and 27816 transitions. [2021-08-06 14:01:55,887 INFO L78 Accepts]: Start accepts. Automaton has 10344 states and 27816 transitions. Word has length 114 [2021-08-06 14:01:55,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:55,887 INFO L470 AbstractCegarLoop]: Abstraction has 10344 states and 27816 transitions. [2021-08-06 14:01:55,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:55,887 INFO L276 IsEmpty]: Start isEmpty. Operand 10344 states and 27816 transitions. [2021-08-06 14:01:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:55,903 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:55,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:55,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-08-06 14:01:55,904 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)] === [2021-08-06 14:01:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1315470016, now seen corresponding path program 142 times [2021-08-06 14:01:55,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:55,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279477043] [2021-08-06 14:01:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:55,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:56,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:56,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:56,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279477043] [2021-08-06 14:01:56,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279477043] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:56,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:56,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:01:56,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332865281] [2021-08-06 14:01:56,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:01:56,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:01:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:01:56,383 INFO L87 Difference]: Start difference. First operand 10344 states and 27816 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:01:58,256 INFO L93 Difference]: Finished difference Result 16661 states and 43328 transitions. [2021-08-06 14:01:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:01:58,256 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 [2021-08-06 14:01:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:01:58,290 INFO L225 Difference]: With dead ends: 16661 [2021-08-06 14:01:58,291 INFO L226 Difference]: Without dead ends: 16661 [2021-08-06 14:01:58,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1592.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:01:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16661 states. [2021-08-06 14:01:58,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16661 to 8932. [2021-08-06 14:01:58,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 8930 states have (on average 2.6716685330347145) internal successors, (23858), 8931 states have internal predecessors, (23858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:01:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 23858 transitions. [2021-08-06 14:01:58,533 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 23858 transitions. Word has length 114 [2021-08-06 14:01:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:01:58,533 INFO L470 AbstractCegarLoop]: Abstraction has 8932 states and 23858 transitions. [2021-08-06 14:01:58,533 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) [2021-08-06 14:01:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 23858 transitions. [2021-08-06 14:01:58,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:01:58,547 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:01:58,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:01:58,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-08-06 14:01:58,547 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)] === [2021-08-06 14:01:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:01:58,548 INFO L82 PathProgramCache]: Analyzing trace with hash 834897726, now seen corresponding path program 39 times [2021-08-06 14:01:58,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:01:58,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853630115] [2021-08-06 14:01:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:01:58,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:01:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:01:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:01:59,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:01:59,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853630115] [2021-08-06 14:01:59,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853630115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:01:59,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:01:59,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:01:59,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898482617] [2021-08-06 14:01:59,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:01:59,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:01:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:01:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:01:59,826 INFO L87 Difference]: Start difference. First operand 8932 states and 23858 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:04,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:04,783 INFO L93 Difference]: Finished difference Result 16432 states and 43796 transitions. [2021-08-06 14:02:04,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-06 14:02:04,783 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:04,814 INFO L225 Difference]: With dead ends: 16432 [2021-08-06 14:02:04,814 INFO L226 Difference]: Without dead ends: 16332 [2021-08-06 14:02:04,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 3582.7ms TimeCoverageRelationStatistics Valid=1156, Invalid=3956, Unknown=0, NotChecked=0, Total=5112 [2021-08-06 14:02:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16332 states. [2021-08-06 14:02:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16332 to 10368. [2021-08-06 14:02:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10368 states, 10366 states have (on average 2.690333783523056) internal successors, (27888), 10367 states have internal predecessors, (27888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10368 states to 10368 states and 27888 transitions. [2021-08-06 14:02:05,051 INFO L78 Accepts]: Start accepts. Automaton has 10368 states and 27888 transitions. Word has length 114 [2021-08-06 14:02:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:05,051 INFO L470 AbstractCegarLoop]: Abstraction has 10368 states and 27888 transitions. [2021-08-06 14:02:05,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 10368 states and 27888 transitions. [2021-08-06 14:02:05,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:05,067 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:05,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:05,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-08-06 14:02:05,067 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)] === [2021-08-06 14:02:05,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:05,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2059124704, now seen corresponding path program 143 times [2021-08-06 14:02:05,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:05,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333293370] [2021-08-06 14:02:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:05,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:05,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:05,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333293370] [2021-08-06 14:02:05,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333293370] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:05,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:05,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:05,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171212199] [2021-08-06 14:02:05,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:05,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:05,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:05,580 INFO L87 Difference]: Start difference. First operand 10368 states and 27888 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:07,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:07,424 INFO L93 Difference]: Finished difference Result 22191 states and 57927 transitions. [2021-08-06 14:02:07,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:07,424 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:07,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:07,469 INFO L225 Difference]: With dead ends: 22191 [2021-08-06 14:02:07,469 INFO L226 Difference]: Without dead ends: 22191 [2021-08-06 14:02:07,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1553.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22191 states. [2021-08-06 14:02:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22191 to 10312. [2021-08-06 14:02:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10310 states have (on average 2.6890397672162947) internal successors, (27724), 10311 states have internal predecessors, (27724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 27724 transitions. [2021-08-06 14:02:07,842 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 27724 transitions. Word has length 114 [2021-08-06 14:02:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:07,843 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 27724 transitions. [2021-08-06 14:02:07,843 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) [2021-08-06 14:02:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 27724 transitions. [2021-08-06 14:02:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:07,857 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:07,857 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] [2021-08-06 14:02:07,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-08-06 14:02:07,857 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)] === [2021-08-06 14:02:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 820004606, now seen corresponding path program 144 times [2021-08-06 14:02:07,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:07,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951105438] [2021-08-06 14:02:07,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:07,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:08,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:08,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951105438] [2021-08-06 14:02:08,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951105438] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:08,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:08,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:08,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477599666] [2021-08-06 14:02:08,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:08,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:08,289 INFO L87 Difference]: Start difference. First operand 10312 states and 27724 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:10,151 INFO L93 Difference]: Finished difference Result 21592 states and 55695 transitions. [2021-08-06 14:02:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:10,151 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:10,190 INFO L225 Difference]: With dead ends: 21592 [2021-08-06 14:02:10,190 INFO L226 Difference]: Without dead ends: 21592 [2021-08-06 14:02:10,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1553.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21592 states. [2021-08-06 14:02:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21592 to 8964. [2021-08-06 14:02:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 2.672394554786878) internal successors, (23950), 8963 states have internal predecessors, (23950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 23950 transitions. [2021-08-06 14:02:10,442 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 23950 transitions. Word has length 114 [2021-08-06 14:02:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:10,442 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 23950 transitions. [2021-08-06 14:02:10,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 23950 transitions. [2021-08-06 14:02:10,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:10,456 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:10,456 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:10,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-08-06 14:02:10,456 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)] === [2021-08-06 14:02:10,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:10,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1614563968, now seen corresponding path program 40 times [2021-08-06 14:02:10,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:10,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908128212] [2021-08-06 14:02:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:10,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:11,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:11,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:11,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908128212] [2021-08-06 14:02:11,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908128212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:11,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:11,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:02:11,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734172362] [2021-08-06 14:02:11,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:02:11,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:11,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:02:11,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:02:11,775 INFO L87 Difference]: Start difference. First operand 8964 states and 23950 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:17,237 INFO L93 Difference]: Finished difference Result 15971 states and 42493 transitions. [2021-08-06 14:02:17,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-06 14:02:17,237 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:17,266 INFO L225 Difference]: With dead ends: 15971 [2021-08-06 14:02:17,266 INFO L226 Difference]: Without dead ends: 15861 [2021-08-06 14:02:17,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 3737.0ms TimeCoverageRelationStatistics Valid=1292, Invalid=4408, Unknown=0, NotChecked=0, Total=5700 [2021-08-06 14:02:17,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15861 states. [2021-08-06 14:02:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15861 to 10392. [2021-08-06 14:02:17,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10392 states, 10390 states have (on average 2.6904716073147257) internal successors, (27954), 10391 states have internal predecessors, (27954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10392 states to 10392 states and 27954 transitions. [2021-08-06 14:02:17,486 INFO L78 Accepts]: Start accepts. Automaton has 10392 states and 27954 transitions. Word has length 114 [2021-08-06 14:02:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:17,486 INFO L470 AbstractCegarLoop]: Abstraction has 10392 states and 27954 transitions. [2021-08-06 14:02:17,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 10392 states and 27954 transitions. [2021-08-06 14:02:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:17,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:17,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:17,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-08-06 14:02:17,502 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)] === [2021-08-06 14:02:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:17,502 INFO L82 PathProgramCache]: Analyzing trace with hash -390336990, now seen corresponding path program 145 times [2021-08-06 14:02:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:17,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016484256] [2021-08-06 14:02:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:17,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:17,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:17,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016484256] [2021-08-06 14:02:17,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016484256] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:17,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:17,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:17,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347808411] [2021-08-06 14:02:17,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:17,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:17,982 INFO L87 Difference]: Start difference. First operand 10392 states and 27954 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:19,737 INFO L93 Difference]: Finished difference Result 22604 states and 58760 transitions. [2021-08-06 14:02:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:19,849 INFO L225 Difference]: With dead ends: 22604 [2021-08-06 14:02:19,849 INFO L226 Difference]: Without dead ends: 22604 [2021-08-06 14:02:19,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1438.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22604 states. [2021-08-06 14:02:20,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22604 to 10304. [2021-08-06 14:02:20,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 10302 states have (on average 2.6886041545331003) internal successors, (27698), 10303 states have internal predecessors, (27698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 27698 transitions. [2021-08-06 14:02:20,105 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 27698 transitions. Word has length 114 [2021-08-06 14:02:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 10304 states and 27698 transitions. [2021-08-06 14:02:20,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 27698 transitions. [2021-08-06 14:02:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:20,123 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:20,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:20,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-08-06 14:02:20,123 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)] === [2021-08-06 14:02:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1322355618, now seen corresponding path program 146 times [2021-08-06 14:02:20,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:20,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431683230] [2021-08-06 14:02:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:20,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:20,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:20,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431683230] [2021-08-06 14:02:20,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431683230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:20,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:20,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:20,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302273633] [2021-08-06 14:02:20,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:20,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:20,659 INFO L87 Difference]: Start difference. First operand 10304 states and 27698 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:22,482 INFO L93 Difference]: Finished difference Result 17039 states and 44352 transitions. [2021-08-06 14:02:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:22,515 INFO L225 Difference]: With dead ends: 17039 [2021-08-06 14:02:22,516 INFO L226 Difference]: Without dead ends: 17039 [2021-08-06 14:02:22,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1586.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17039 states. [2021-08-06 14:02:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17039 to 8868. [2021-08-06 14:02:22,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8868 states, 8866 states have (on average 2.6702007669749603) internal successors, (23674), 8867 states have internal predecessors, (23674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8868 states to 8868 states and 23674 transitions. [2021-08-06 14:02:22,763 INFO L78 Accepts]: Start accepts. Automaton has 8868 states and 23674 transitions. Word has length 114 [2021-08-06 14:02:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:22,764 INFO L470 AbstractCegarLoop]: Abstraction has 8868 states and 23674 transitions. [2021-08-06 14:02:22,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8868 states and 23674 transitions. [2021-08-06 14:02:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:22,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:22,778 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] [2021-08-06 14:02:22,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-08-06 14:02:22,780 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)] === [2021-08-06 14:02:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:22,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1407215006, now seen corresponding path program 41 times [2021-08-06 14:02:22,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:22,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199910372] [2021-08-06 14:02:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:22,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:23,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:23,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199910372] [2021-08-06 14:02:23,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199910372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:23,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:23,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:02:23,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783135550] [2021-08-06 14:02:23,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:02:23,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:24,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:02:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:02:24,001 INFO L87 Difference]: Start difference. First operand 8868 states and 23674 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:27,919 INFO L93 Difference]: Finished difference Result 14998 states and 40156 transitions. [2021-08-06 14:02:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 14:02:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:27,945 INFO L225 Difference]: With dead ends: 14998 [2021-08-06 14:02:27,945 INFO L226 Difference]: Without dead ends: 14898 [2021-08-06 14:02:27,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 2873.8ms TimeCoverageRelationStatistics Valid=1018, Invalid=3538, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 14:02:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14898 states. [2021-08-06 14:02:28,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14898 to 10336. [2021-08-06 14:02:28,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10336 states, 10334 states have (on average 2.689761950841881) internal successors, (27796), 10335 states have internal predecessors, (27796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10336 states to 10336 states and 27796 transitions. [2021-08-06 14:02:28,134 INFO L78 Accepts]: Start accepts. Automaton has 10336 states and 27796 transitions. Word has length 114 [2021-08-06 14:02:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:28,134 INFO L470 AbstractCegarLoop]: Abstraction has 10336 states and 27796 transitions. [2021-08-06 14:02:28,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:28,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10336 states and 27796 transitions. [2021-08-06 14:02:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:28,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:28,148 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:28,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-08-06 14:02:28,148 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)] === [2021-08-06 14:02:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:28,149 INFO L82 PathProgramCache]: Analyzing trace with hash -182988028, now seen corresponding path program 147 times [2021-08-06 14:02:28,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:28,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805083744] [2021-08-06 14:02:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:28,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:28,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:28,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805083744] [2021-08-06 14:02:28,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805083744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:28,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:28,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:28,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075966693] [2021-08-06 14:02:28,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:28,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:28,649 INFO L87 Difference]: Start difference. First operand 10336 states and 27796 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:30,533 INFO L93 Difference]: Finished difference Result 22957 states and 60039 transitions. [2021-08-06 14:02:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:30,586 INFO L225 Difference]: With dead ends: 22957 [2021-08-06 14:02:30,586 INFO L226 Difference]: Without dead ends: 22957 [2021-08-06 14:02:30,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1600.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22957 states. [2021-08-06 14:02:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22957 to 10312. [2021-08-06 14:02:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 10310 states have (on average 2.6890397672162947) internal successors, (27724), 10311 states have internal predecessors, (27724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 27724 transitions. [2021-08-06 14:02:31,030 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 27724 transitions. Word has length 114 [2021-08-06 14:02:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:31,031 INFO L470 AbstractCegarLoop]: Abstraction has 10312 states and 27724 transitions. [2021-08-06 14:02:31,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 27724 transitions. [2021-08-06 14:02:31,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:31,045 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:31,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:31,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-08-06 14:02:31,045 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)] === [2021-08-06 14:02:31,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:31,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1422108126, now seen corresponding path program 148 times [2021-08-06 14:02:31,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:31,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755839791] [2021-08-06 14:02:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:31,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:31,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:31,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755839791] [2021-08-06 14:02:31,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755839791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:31,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:31,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:31,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551447146] [2021-08-06 14:02:31,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:31,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:31,551 INFO L87 Difference]: Start difference. First operand 10312 states and 27724 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:33,107 INFO L93 Difference]: Finished difference Result 22358 states and 57807 transitions. [2021-08-06 14:02:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:33,151 INFO L225 Difference]: With dead ends: 22358 [2021-08-06 14:02:33,151 INFO L226 Difference]: Without dead ends: 22358 [2021-08-06 14:02:33,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1283.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22358 states. [2021-08-06 14:02:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22358 to 8964. [2021-08-06 14:02:33,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 2.672394554786878) internal successors, (23950), 8963 states have internal predecessors, (23950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 23950 transitions. [2021-08-06 14:02:33,448 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 23950 transitions. Word has length 114 [2021-08-06 14:02:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:33,448 INFO L470 AbstractCegarLoop]: Abstraction has 8964 states and 23950 transitions. [2021-08-06 14:02:33,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 23950 transitions. [2021-08-06 14:02:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:33,462 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:33,462 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] [2021-08-06 14:02:33,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-08-06 14:02:33,463 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)] === [2021-08-06 14:02:33,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:33,463 INFO L82 PathProgramCache]: Analyzing trace with hash 438290596, now seen corresponding path program 42 times [2021-08-06 14:02:33,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:33,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293709461] [2021-08-06 14:02:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:33,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:34,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:34,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293709461] [2021-08-06 14:02:34,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293709461] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:34,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:34,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:02:34,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307542781] [2021-08-06 14:02:34,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:02:34,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:34,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:02:34,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:02:34,609 INFO L87 Difference]: Start difference. First operand 8964 states and 23950 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:39,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:39,211 INFO L93 Difference]: Finished difference Result 16182 states and 43084 transitions. [2021-08-06 14:02:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-06 14:02:39,212 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:39,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:39,241 INFO L225 Difference]: With dead ends: 16182 [2021-08-06 14:02:39,241 INFO L226 Difference]: Without dead ends: 16072 [2021-08-06 14:02:39,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 3285.8ms TimeCoverageRelationStatistics Valid=1154, Invalid=3958, Unknown=0, NotChecked=0, Total=5112 [2021-08-06 14:02:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16072 states. [2021-08-06 14:02:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16072 to 10392. [2021-08-06 14:02:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10392 states, 10390 states have (on average 2.6904716073147257) internal successors, (27954), 10391 states have internal predecessors, (27954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:39,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10392 states to 10392 states and 27954 transitions. [2021-08-06 14:02:39,462 INFO L78 Accepts]: Start accepts. Automaton has 10392 states and 27954 transitions. Word has length 114 [2021-08-06 14:02:39,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:39,463 INFO L470 AbstractCegarLoop]: Abstraction has 10392 states and 27954 transitions. [2021-08-06 14:02:39,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:39,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10392 states and 27954 transitions. [2021-08-06 14:02:39,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:39,478 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:39,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:39,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-08-06 14:02:39,479 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)] === [2021-08-06 14:02:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:39,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1662517574, now seen corresponding path program 149 times [2021-08-06 14:02:39,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:39,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270805130] [2021-08-06 14:02:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:39,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:39,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:39,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270805130] [2021-08-06 14:02:39,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270805130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:39,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:39,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:39,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288486557] [2021-08-06 14:02:39,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:39,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:39,961 INFO L87 Difference]: Start difference. First operand 10392 states and 27954 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:41,860 INFO L93 Difference]: Finished difference Result 28269 states and 73147 transitions. [2021-08-06 14:02:41,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:41,860 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 [2021-08-06 14:02:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:41,929 INFO L225 Difference]: With dead ends: 28269 [2021-08-06 14:02:41,929 INFO L226 Difference]: Without dead ends: 28269 [2021-08-06 14:02:41,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1577.1ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:41,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28269 states. [2021-08-06 14:02:42,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28269 to 10304. [2021-08-06 14:02:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 10302 states have (on average 2.6886041545331003) internal successors, (27698), 10303 states have internal predecessors, (27698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 27698 transitions. [2021-08-06 14:02:42,325 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 27698 transitions. Word has length 114 [2021-08-06 14:02:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 10304 states and 27698 transitions. [2021-08-06 14:02:42,325 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) [2021-08-06 14:02:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 27698 transitions. [2021-08-06 14:02:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:42,338 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:42,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:42,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-08-06 14:02:42,339 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)] === [2021-08-06 14:02:42,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:42,339 INFO L82 PathProgramCache]: Analyzing trace with hash 730498946, now seen corresponding path program 150 times [2021-08-06 14:02:42,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:42,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615657820] [2021-08-06 14:02:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:42,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:42,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:42,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:42,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615657820] [2021-08-06 14:02:42,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615657820] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:42,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:42,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:42,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739369439] [2021-08-06 14:02:42,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:42,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:42,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:42,804 INFO L87 Difference]: Start difference. First operand 10304 states and 27698 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:44,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:44,694 INFO L93 Difference]: Finished difference Result 22704 states and 58739 transitions. [2021-08-06 14:02:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:44,695 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:44,739 INFO L225 Difference]: With dead ends: 22704 [2021-08-06 14:02:44,739 INFO L226 Difference]: Without dead ends: 22704 [2021-08-06 14:02:44,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1605.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22704 states. [2021-08-06 14:02:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22704 to 8932. [2021-08-06 14:02:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8932 states, 8930 states have (on average 2.6716685330347145) internal successors, (23858), 8931 states have internal predecessors, (23858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:45,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8932 states to 8932 states and 23858 transitions. [2021-08-06 14:02:45,025 INFO L78 Accepts]: Start accepts. Automaton has 8932 states and 23858 transitions. Word has length 114 [2021-08-06 14:02:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:45,026 INFO L470 AbstractCegarLoop]: Abstraction has 8932 states and 23858 transitions. [2021-08-06 14:02:45,026 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) [2021-08-06 14:02:45,026 INFO L276 IsEmpty]: Start isEmpty. Operand 8932 states and 23858 transitions. [2021-08-06 14:02:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:45,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:45,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:45,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-08-06 14:02:45,040 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)] === [2021-08-06 14:02:45,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 571048350, now seen corresponding path program 43 times [2021-08-06 14:02:45,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:45,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686081608] [2021-08-06 14:02:45,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:45,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:46,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:46,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686081608] [2021-08-06 14:02:46,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686081608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:46,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:46,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:02:46,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413296918] [2021-08-06 14:02:46,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:02:46,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:46,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:02:46,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:02:46,436 INFO L87 Difference]: Start difference. First operand 8932 states and 23858 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:50,084 INFO L93 Difference]: Finished difference Result 15096 states and 40288 transitions. [2021-08-06 14:02:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-06 14:02:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:50,106 INFO L225 Difference]: With dead ends: 15096 [2021-08-06 14:02:50,107 INFO L226 Difference]: Without dead ends: 14966 [2021-08-06 14:02:50,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 2664.1ms TimeCoverageRelationStatistics Valid=1051, Invalid=3641, Unknown=0, NotChecked=0, Total=4692 [2021-08-06 14:02:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14966 states. [2021-08-06 14:02:50,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14966 to 10584. [2021-08-06 14:02:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10584 states, 10582 states have (on average 2.6938196938196937) internal successors, (28506), 10583 states have internal predecessors, (28506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:50,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10584 states to 10584 states and 28506 transitions. [2021-08-06 14:02:50,282 INFO L78 Accepts]: Start accepts. Automaton has 10584 states and 28506 transitions. Word has length 114 [2021-08-06 14:02:50,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:50,282 INFO L470 AbstractCegarLoop]: Abstraction has 10584 states and 28506 transitions. [2021-08-06 14:02:50,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10584 states and 28506 transitions. [2021-08-06 14:02:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:50,297 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:50,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:50,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-08-06 14:02:50,297 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)] === [2021-08-06 14:02:50,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:50,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1795275328, now seen corresponding path program 151 times [2021-08-06 14:02:50,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:50,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99442298] [2021-08-06 14:02:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:50,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:50,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99442298] [2021-08-06 14:02:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99442298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:50,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:50,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:50,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120167010] [2021-08-06 14:02:50,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:50,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:50,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:50,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:50,832 INFO L87 Difference]: Start difference. First operand 10584 states and 28506 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:52,563 INFO L93 Difference]: Finished difference Result 23658 states and 61668 transitions. [2021-08-06 14:02:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:52,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:52,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:52,603 INFO L225 Difference]: With dead ends: 23658 [2021-08-06 14:02:52,603 INFO L226 Difference]: Without dead ends: 23658 [2021-08-06 14:02:52,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1468.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23658 states. [2021-08-06 14:02:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23658 to 10528. [2021-08-06 14:02:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 10526 states have (on average 2.6925707771233136) internal successors, (28342), 10527 states have internal predecessors, (28342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 28342 transitions. [2021-08-06 14:02:52,884 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 28342 transitions. Word has length 114 [2021-08-06 14:02:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:52,884 INFO L470 AbstractCegarLoop]: Abstraction has 10528 states and 28342 transitions. [2021-08-06 14:02:52,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 28342 transitions. [2021-08-06 14:02:52,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:52,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:52,897 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:52,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-08-06 14:02:52,897 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)] === [2021-08-06 14:02:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash 863256700, now seen corresponding path program 152 times [2021-08-06 14:02:52,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:52,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349895479] [2021-08-06 14:02:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:52,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:52,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:53,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:53,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349895479] [2021-08-06 14:02:53,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349895479] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:53,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:53,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:53,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633275481] [2021-08-06 14:02:53,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:53,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:53,386 INFO L87 Difference]: Start difference. First operand 10528 states and 28342 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:55,120 INFO L93 Difference]: Finished difference Result 23398 states and 60984 transitions. [2021-08-06 14:02:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:55,120 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:55,161 INFO L225 Difference]: With dead ends: 23398 [2021-08-06 14:02:55,161 INFO L226 Difference]: Without dead ends: 23398 [2021-08-06 14:02:55,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1467.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23398 states. [2021-08-06 14:02:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23398 to 10496. [2021-08-06 14:02:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10496 states, 10494 states have (on average 2.6920144844673146) internal successors, (28250), 10495 states have internal predecessors, (28250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:55,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10496 states to 10496 states and 28250 transitions. [2021-08-06 14:02:55,441 INFO L78 Accepts]: Start accepts. Automaton has 10496 states and 28250 transitions. Word has length 114 [2021-08-06 14:02:55,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:55,441 INFO L470 AbstractCegarLoop]: Abstraction has 10496 states and 28250 transitions. [2021-08-06 14:02:55,441 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) [2021-08-06 14:02:55,441 INFO L276 IsEmpty]: Start isEmpty. Operand 10496 states and 28250 transitions. [2021-08-06 14:02:55,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:55,454 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:55,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:55,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-08-06 14:02:55,454 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)] === [2021-08-06 14:02:55,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:55,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1666521316, now seen corresponding path program 153 times [2021-08-06 14:02:55,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:55,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730073491] [2021-08-06 14:02:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:55,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:55,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:55,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730073491] [2021-08-06 14:02:55,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730073491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:55,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:55,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:02:55,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863476209] [2021-08-06 14:02:55,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:02:55,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:02:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:02:55,885 INFO L87 Difference]: Start difference. First operand 10496 states and 28250 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:57,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:02:57,396 INFO L93 Difference]: Finished difference Result 17955 states and 46904 transitions. [2021-08-06 14:02:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:02:57,397 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:02:57,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:02:57,425 INFO L225 Difference]: With dead ends: 17955 [2021-08-06 14:02:57,425 INFO L226 Difference]: Without dead ends: 17955 [2021-08-06 14:02:57,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1278.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:02:57,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17955 states. [2021-08-06 14:02:57,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17955 to 8740. [2021-08-06 14:02:57,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8740 states, 8738 states have (on average 2.667200732433051) internal successors, (23306), 8739 states have internal predecessors, (23306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:57,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8740 states to 8740 states and 23306 transitions. [2021-08-06 14:02:57,615 INFO L78 Accepts]: Start accepts. Automaton has 8740 states and 23306 transitions. Word has length 114 [2021-08-06 14:02:57,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:02:57,616 INFO L470 AbstractCegarLoop]: Abstraction has 8740 states and 23306 transitions. [2021-08-06 14:02:57,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:02:57,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8740 states and 23306 transitions. [2021-08-06 14:02:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:02:57,627 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:02:57,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:02:57,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-08-06 14:02:57,627 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)] === [2021-08-06 14:02:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:02:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1523648708, now seen corresponding path program 44 times [2021-08-06 14:02:57,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:02:57,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770910801] [2021-08-06 14:02:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:02:57,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:02:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:02:58,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:02:58,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:02:58,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770910801] [2021-08-06 14:02:58,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770910801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:02:58,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:02:58,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:02:58,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50310973] [2021-08-06 14:02:58,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:02:58,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:02:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:02:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:02:58,591 INFO L87 Difference]: Start difference. First operand 8740 states and 23306 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:02,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:02,078 INFO L93 Difference]: Finished difference Result 14166 states and 37816 transitions. [2021-08-06 14:03:02,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-06 14:03:02,079 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:02,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:02,102 INFO L225 Difference]: With dead ends: 14166 [2021-08-06 14:03:02,102 INFO L226 Difference]: Without dead ends: 14066 [2021-08-06 14:03:02,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 2505.3ms TimeCoverageRelationStatistics Valid=1050, Invalid=3642, Unknown=0, NotChecked=0, Total=4692 [2021-08-06 14:03:02,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14066 states. [2021-08-06 14:03:02,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14066 to 10222. [2021-08-06 14:03:02,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10222 states, 10220 states have (on average 2.6877690802348337) internal successors, (27469), 10221 states have internal predecessors, (27469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10222 states to 10222 states and 27469 transitions. [2021-08-06 14:03:02,283 INFO L78 Accepts]: Start accepts. Automaton has 10222 states and 27469 transitions. Word has length 114 [2021-08-06 14:03:02,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:02,284 INFO L470 AbstractCegarLoop]: Abstraction has 10222 states and 27469 transitions. [2021-08-06 14:03:02,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10222 states and 27469 transitions. [2021-08-06 14:03:02,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:02,296 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:02,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:02,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-08-06 14:03:02,296 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)] === [2021-08-06 14:03:02,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:02,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1547091610, now seen corresponding path program 154 times [2021-08-06 14:03:02,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:02,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587260940] [2021-08-06 14:03:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:02,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:02,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:02,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587260940] [2021-08-06 14:03:02,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587260940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:02,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:02,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:02,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742960624] [2021-08-06 14:03:02,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:02,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:02,751 INFO L87 Difference]: Start difference. First operand 10222 states and 27469 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:04,153 INFO L93 Difference]: Finished difference Result 16401 states and 43140 transitions. [2021-08-06 14:03:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:04,153 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 [2021-08-06 14:03:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:04,180 INFO L225 Difference]: With dead ends: 16401 [2021-08-06 14:03:04,180 INFO L226 Difference]: Without dead ends: 16401 [2021-08-06 14:03:04,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1224.4ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16401 states. [2021-08-06 14:03:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16401 to 10212. [2021-08-06 14:03:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 2.6873653281096965) internal successors, (27438), 10211 states have internal predecessors, (27438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 27438 transitions. [2021-08-06 14:03:04,405 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 27438 transitions. Word has length 114 [2021-08-06 14:03:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:04,405 INFO L470 AbstractCegarLoop]: Abstraction has 10212 states and 27438 transitions. [2021-08-06 14:03:04,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 27438 transitions. [2021-08-06 14:03:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:04,419 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:04,419 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:04,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-08-06 14:03:04,419 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)] === [2021-08-06 14:03:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1508755588, now seen corresponding path program 155 times [2021-08-06 14:03:04,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:04,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884109987] [2021-08-06 14:03:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:04,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:04,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:04,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884109987] [2021-08-06 14:03:04,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884109987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:04,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:04,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:04,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975450387] [2021-08-06 14:03:04,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:04,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:04,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:04,826 INFO L87 Difference]: Start difference. First operand 10212 states and 27438 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:06,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:06,311 INFO L93 Difference]: Finished difference Result 15802 states and 40908 transitions. [2021-08-06 14:03:06,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:06,312 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:06,336 INFO L225 Difference]: With dead ends: 15802 [2021-08-06 14:03:06,336 INFO L226 Difference]: Without dead ends: 15802 [2021-08-06 14:03:06,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1310.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15802 states. [2021-08-06 14:03:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15802 to 8864. [2021-08-06 14:03:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8862 states have (on average 2.6702775897088693) internal successors, (23664), 8863 states have internal predecessors, (23664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 23664 transitions. [2021-08-06 14:03:06,517 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 23664 transitions. Word has length 114 [2021-08-06 14:03:06,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:06,517 INFO L470 AbstractCegarLoop]: Abstraction has 8864 states and 23664 transitions. [2021-08-06 14:03:06,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 23664 transitions. [2021-08-06 14:03:06,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:06,528 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:06,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:06,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-08-06 14:03:06,528 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)] === [2021-08-06 14:03:06,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:06,529 INFO L82 PathProgramCache]: Analyzing trace with hash -925812986, now seen corresponding path program 45 times [2021-08-06 14:03:06,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:06,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725421334] [2021-08-06 14:03:06,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:06,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:07,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:07,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725421334] [2021-08-06 14:03:07,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725421334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:07,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:07,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:03:07,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149347271] [2021-08-06 14:03:07,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:03:07,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:03:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:03:07,490 INFO L87 Difference]: Start difference. First operand 8864 states and 23664 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:12,151 INFO L93 Difference]: Finished difference Result 15364 states and 40785 transitions. [2021-08-06 14:03:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-08-06 14:03:12,151 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:12,178 INFO L225 Difference]: With dead ends: 15364 [2021-08-06 14:03:12,178 INFO L226 Difference]: Without dead ends: 15254 [2021-08-06 14:03:12,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 3114.5ms TimeCoverageRelationStatistics Valid=1187, Invalid=4069, Unknown=0, NotChecked=0, Total=5256 [2021-08-06 14:03:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15254 states. [2021-08-06 14:03:12,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15254 to 10292. [2021-08-06 14:03:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10292 states, 10290 states have (on average 2.688824101068999) internal successors, (27668), 10291 states have internal predecessors, (27668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10292 states to 10292 states and 27668 transitions. [2021-08-06 14:03:12,391 INFO L78 Accepts]: Start accepts. Automaton has 10292 states and 27668 transitions. Word has length 114 [2021-08-06 14:03:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:12,391 INFO L470 AbstractCegarLoop]: Abstraction has 10292 states and 27668 transitions. [2021-08-06 14:03:12,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 10292 states and 27668 transitions. [2021-08-06 14:03:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:12,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:12,407 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:12,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-08-06 14:03:12,407 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)] === [2021-08-06 14:03:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:12,408 INFO L82 PathProgramCache]: Analyzing trace with hash 298413992, now seen corresponding path program 156 times [2021-08-06 14:03:12,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:12,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141838917] [2021-08-06 14:03:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:12,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:12,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:12,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141838917] [2021-08-06 14:03:12,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141838917] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:12,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:12,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:12,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352376547] [2021-08-06 14:03:12,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:12,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:12,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:12,871 INFO L87 Difference]: Start difference. First operand 10292 states and 27668 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:14,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:14,483 INFO L93 Difference]: Finished difference Result 21713 states and 56248 transitions. [2021-08-06 14:03:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:14,484 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 [2021-08-06 14:03:14,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:14,524 INFO L225 Difference]: With dead ends: 21713 [2021-08-06 14:03:14,524 INFO L226 Difference]: Without dead ends: 21713 [2021-08-06 14:03:14,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1380.9ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21713 states. [2021-08-06 14:03:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21713 to 10204. [2021-08-06 14:03:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10204 states, 10202 states have (on average 2.6869241325230346) internal successors, (27412), 10203 states have internal predecessors, (27412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10204 states to 10204 states and 27412 transitions. [2021-08-06 14:03:14,785 INFO L78 Accepts]: Start accepts. Automaton has 10204 states and 27412 transitions. Word has length 114 [2021-08-06 14:03:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:14,785 INFO L470 AbstractCegarLoop]: Abstraction has 10204 states and 27412 transitions. [2021-08-06 14:03:14,785 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) [2021-08-06 14:03:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 10204 states and 27412 transitions. [2021-08-06 14:03:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:14,797 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:14,798 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:14,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-08-06 14:03:14,798 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)] === [2021-08-06 14:03:14,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:14,798 INFO L82 PathProgramCache]: Analyzing trace with hash -633604636, now seen corresponding path program 157 times [2021-08-06 14:03:14,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:14,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587669404] [2021-08-06 14:03:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:14,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:15,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:15,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:15,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587669404] [2021-08-06 14:03:15,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587669404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:15,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:15,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:15,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374168206] [2021-08-06 14:03:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:15,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:15,223 INFO L87 Difference]: Start difference. First operand 10204 states and 27412 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:16,678 INFO L93 Difference]: Finished difference Result 16148 states and 41840 transitions. [2021-08-06 14:03:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:16,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:16,703 INFO L225 Difference]: With dead ends: 16148 [2021-08-06 14:03:16,703 INFO L226 Difference]: Without dead ends: 16148 [2021-08-06 14:03:16,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1302.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:16,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16148 states. [2021-08-06 14:03:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16148 to 8832. [2021-08-06 14:03:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8832 states, 8830 states have (on average 2.6695356738391847) internal successors, (23572), 8831 states have internal predecessors, (23572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8832 states to 8832 states and 23572 transitions. [2021-08-06 14:03:16,873 INFO L78 Accepts]: Start accepts. Automaton has 8832 states and 23572 transitions. Word has length 114 [2021-08-06 14:03:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:16,873 INFO L470 AbstractCegarLoop]: Abstraction has 8832 states and 23572 transitions. [2021-08-06 14:03:16,873 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) [2021-08-06 14:03:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8832 states and 23572 transitions. [2021-08-06 14:03:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:16,884 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:16,884 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:16,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-08-06 14:03:16,884 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)] === [2021-08-06 14:03:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:16,884 INFO L82 PathProgramCache]: Analyzing trace with hash -793055232, now seen corresponding path program 46 times [2021-08-06 14:03:16,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:16,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380405290] [2021-08-06 14:03:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:16,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:17,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:17,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380405290] [2021-08-06 14:03:17,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380405290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:17,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:17,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:03:17,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399272238] [2021-08-06 14:03:17,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:03:17,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:17,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:03:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:03:17,831 INFO L87 Difference]: Start difference. First operand 8832 states and 23572 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:21,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:21,216 INFO L93 Difference]: Finished difference Result 14762 states and 39325 transitions. [2021-08-06 14:03:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-06 14:03:21,217 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:21,240 INFO L225 Difference]: With dead ends: 14762 [2021-08-06 14:03:21,241 INFO L226 Difference]: Without dead ends: 14632 [2021-08-06 14:03:21,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2408.3ms TimeCoverageRelationStatistics Valid=1084, Invalid=3746, Unknown=0, NotChecked=0, Total=4830 [2021-08-06 14:03:21,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2021-08-06 14:03:21,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 10484. [2021-08-06 14:03:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10484 states, 10482 states have (on average 2.6922343064300707) internal successors, (28220), 10483 states have internal predecessors, (28220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10484 states to 10484 states and 28220 transitions. [2021-08-06 14:03:21,424 INFO L78 Accepts]: Start accepts. Automaton has 10484 states and 28220 transitions. Word has length 114 [2021-08-06 14:03:21,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:21,424 INFO L470 AbstractCegarLoop]: Abstraction has 10484 states and 28220 transitions. [2021-08-06 14:03:21,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:21,424 INFO L276 IsEmpty]: Start isEmpty. Operand 10484 states and 28220 transitions. [2021-08-06 14:03:21,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:21,437 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:21,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:21,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-08-06 14:03:21,438 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)] === [2021-08-06 14:03:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:21,438 INFO L82 PathProgramCache]: Analyzing trace with hash 431171746, now seen corresponding path program 158 times [2021-08-06 14:03:21,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:21,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099931344] [2021-08-06 14:03:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:21,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:21,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:21,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099931344] [2021-08-06 14:03:21,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099931344] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:21,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:21,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:21,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935592591] [2021-08-06 14:03:21,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:21,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:21,880 INFO L87 Difference]: Start difference. First operand 10484 states and 28220 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:23,823 INFO L93 Difference]: Finished difference Result 22703 states and 58972 transitions. [2021-08-06 14:03:23,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:23,824 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 [2021-08-06 14:03:23,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:23,860 INFO L225 Difference]: With dead ends: 22703 [2021-08-06 14:03:23,860 INFO L226 Difference]: Without dead ends: 22703 [2021-08-06 14:03:23,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1604.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22703 states. [2021-08-06 14:03:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22703 to 10428. [2021-08-06 14:03:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10428 states, 10426 states have (on average 2.6909648954536736) internal successors, (28056), 10427 states have internal predecessors, (28056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 28056 transitions. [2021-08-06 14:03:24,106 INFO L78 Accepts]: Start accepts. Automaton has 10428 states and 28056 transitions. Word has length 114 [2021-08-06 14:03:24,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:24,106 INFO L470 AbstractCegarLoop]: Abstraction has 10428 states and 28056 transitions. [2021-08-06 14:03:24,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:24,106 INFO L276 IsEmpty]: Start isEmpty. Operand 10428 states and 28056 transitions. [2021-08-06 14:03:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:24,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:24,119 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:24,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-08-06 14:03:24,119 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)] === [2021-08-06 14:03:24,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:24,119 INFO L82 PathProgramCache]: Analyzing trace with hash -500846882, now seen corresponding path program 159 times [2021-08-06 14:03:24,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:24,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901863599] [2021-08-06 14:03:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:24,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:24,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:24,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901863599] [2021-08-06 14:03:24,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901863599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:24,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:24,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:24,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909673940] [2021-08-06 14:03:24,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:24,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:24,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:24,635 INFO L87 Difference]: Start difference. First operand 10428 states and 28056 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:26,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:26,190 INFO L93 Difference]: Finished difference Result 22443 states and 58288 transitions. [2021-08-06 14:03:26,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:26,190 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:26,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:26,321 INFO L225 Difference]: With dead ends: 22443 [2021-08-06 14:03:26,321 INFO L226 Difference]: Without dead ends: 22443 [2021-08-06 14:03:26,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1317.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22443 states. [2021-08-06 14:03:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22443 to 10396. [2021-08-06 14:03:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10396 states, 10394 states have (on average 2.6903983067154127) internal successors, (27964), 10395 states have internal predecessors, (27964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 27964 transitions. [2021-08-06 14:03:26,615 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 27964 transitions. Word has length 114 [2021-08-06 14:03:26,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:26,615 INFO L470 AbstractCegarLoop]: Abstraction has 10396 states and 27964 transitions. [2021-08-06 14:03:26,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 27964 transitions. [2021-08-06 14:03:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:26,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:26,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:26,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-08-06 14:03:26,632 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)] === [2021-08-06 14:03:26,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:26,633 INFO L82 PathProgramCache]: Analyzing trace with hash 302417734, now seen corresponding path program 160 times [2021-08-06 14:03:26,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:26,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853191135] [2021-08-06 14:03:26,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:26,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:27,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:27,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853191135] [2021-08-06 14:03:27,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853191135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:27,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:27,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:27,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935986756] [2021-08-06 14:03:27,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:27,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:27,141 INFO L87 Difference]: Start difference. First operand 10396 states and 27964 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:28,879 INFO L93 Difference]: Finished difference Result 17000 states and 44208 transitions. [2021-08-06 14:03:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:28,879 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:28,911 INFO L225 Difference]: With dead ends: 17000 [2021-08-06 14:03:28,912 INFO L226 Difference]: Without dead ends: 17000 [2021-08-06 14:03:28,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1486.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:28,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17000 states. [2021-08-06 14:03:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17000 to 8768. [2021-08-06 14:03:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8768 states, 8766 states have (on average 2.6680355920602326) internal successors, (23388), 8767 states have internal predecessors, (23388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:29,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8768 states to 8768 states and 23388 transitions. [2021-08-06 14:03:29,138 INFO L78 Accepts]: Start accepts. Automaton has 8768 states and 23388 transitions. Word has length 114 [2021-08-06 14:03:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:29,138 INFO L470 AbstractCegarLoop]: Abstraction has 8768 states and 23388 transitions. [2021-08-06 14:03:29,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8768 states and 23388 transitions. [2021-08-06 14:03:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:29,151 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:29,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:29,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-08-06 14:03:29,151 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)] === [2021-08-06 14:03:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:29,152 INFO L82 PathProgramCache]: Analyzing trace with hash 610715934, now seen corresponding path program 47 times [2021-08-06 14:03:29,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:29,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028841427] [2021-08-06 14:03:29,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:29,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:30,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:30,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028841427] [2021-08-06 14:03:30,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028841427] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:30,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:30,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:03:30,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246720200] [2021-08-06 14:03:30,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:03:30,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:30,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:03:30,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:03:30,788 INFO L87 Difference]: Start difference. First operand 8768 states and 23388 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:34,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:34,628 INFO L93 Difference]: Finished difference Result 15031 states and 39811 transitions. [2021-08-06 14:03:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 14:03:34,628 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:34,648 INFO L225 Difference]: With dead ends: 15031 [2021-08-06 14:03:34,648 INFO L226 Difference]: Without dead ends: 14868 [2021-08-06 14:03:34,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 2914.0ms TimeCoverageRelationStatistics Valid=1121, Invalid=3849, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 14:03:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14868 states. [2021-08-06 14:03:34,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14868 to 10994. [2021-08-06 14:03:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10994 states, 10992 states have (on average 2.6985080058224162) internal successors, (29662), 10993 states have internal predecessors, (29662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:34,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10994 states to 10994 states and 29662 transitions. [2021-08-06 14:03:34,829 INFO L78 Accepts]: Start accepts. Automaton has 10994 states and 29662 transitions. Word has length 114 [2021-08-06 14:03:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:34,829 INFO L470 AbstractCegarLoop]: Abstraction has 10994 states and 29662 transitions. [2021-08-06 14:03:34,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:34,829 INFO L276 IsEmpty]: Start isEmpty. Operand 10994 states and 29662 transitions. [2021-08-06 14:03:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:34,844 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:34,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:34,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-08-06 14:03:34,844 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)] === [2021-08-06 14:03:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1834942912, now seen corresponding path program 161 times [2021-08-06 14:03:34,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:34,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570607494] [2021-08-06 14:03:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:34,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:35,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:35,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570607494] [2021-08-06 14:03:35,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570607494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:35,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:35,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:35,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442528765] [2021-08-06 14:03:35,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:35,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:35,281 INFO L87 Difference]: Start difference. First operand 10994 states and 29662 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:36,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:36,750 INFO L93 Difference]: Finished difference Result 17612 states and 46211 transitions. [2021-08-06 14:03:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:36,750 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 [2021-08-06 14:03:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:36,778 INFO L225 Difference]: With dead ends: 17612 [2021-08-06 14:03:36,778 INFO L226 Difference]: Without dead ends: 17612 [2021-08-06 14:03:36,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1242.7ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17612 states. [2021-08-06 14:03:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17612 to 10952. [2021-08-06 14:03:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10952 states, 10950 states have (on average 2.6976255707762555) internal successors, (29539), 10951 states have internal predecessors, (29539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10952 states to 10952 states and 29539 transitions. [2021-08-06 14:03:37,049 INFO L78 Accepts]: Start accepts. Automaton has 10952 states and 29539 transitions. Word has length 114 [2021-08-06 14:03:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:37,049 INFO L470 AbstractCegarLoop]: Abstraction has 10952 states and 29539 transitions. [2021-08-06 14:03:37,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 10952 states and 29539 transitions. [2021-08-06 14:03:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:37,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:37,063 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:37,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-08-06 14:03:37,063 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)] === [2021-08-06 14:03:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:37,063 INFO L82 PathProgramCache]: Analyzing trace with hash 902924284, now seen corresponding path program 162 times [2021-08-06 14:03:37,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:37,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621690646] [2021-08-06 14:03:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:37,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:37,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:37,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621690646] [2021-08-06 14:03:37,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621690646] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:37,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:37,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:37,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029907000] [2021-08-06 14:03:37,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:37,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:37,509 INFO L87 Difference]: Start difference. First operand 10952 states and 29539 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:38,966 INFO L93 Difference]: Finished difference Result 17352 states and 45527 transitions. [2021-08-06 14:03:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:38,967 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:38,994 INFO L225 Difference]: With dead ends: 17352 [2021-08-06 14:03:38,995 INFO L226 Difference]: Without dead ends: 17352 [2021-08-06 14:03:38,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1255.2ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:39,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17352 states. [2021-08-06 14:03:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17352 to 10920. [2021-08-06 14:03:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10918 states have (on average 2.697105697014105) internal successors, (29447), 10919 states have internal predecessors, (29447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:39,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 29447 transitions. [2021-08-06 14:03:39,200 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 29447 transitions. Word has length 114 [2021-08-06 14:03:39,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:39,200 INFO L470 AbstractCegarLoop]: Abstraction has 10920 states and 29447 transitions. [2021-08-06 14:03:39,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:39,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 29447 transitions. [2021-08-06 14:03:39,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:39,214 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:39,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:39,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-08-06 14:03:39,214 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)] === [2021-08-06 14:03:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:39,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1706188900, now seen corresponding path program 163 times [2021-08-06 14:03:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:39,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206135596] [2021-08-06 14:03:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:39,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:39,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:39,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206135596] [2021-08-06 14:03:39,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206135596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:39,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:39,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:39,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333899225] [2021-08-06 14:03:39,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:39,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:39,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:39,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:39,716 INFO L87 Difference]: Start difference. First operand 10920 states and 29447 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:41,164 INFO L93 Difference]: Finished difference Result 17928 states and 47183 transitions. [2021-08-06 14:03:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:41,164 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 [2021-08-06 14:03:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:41,194 INFO L225 Difference]: With dead ends: 17928 [2021-08-06 14:03:41,194 INFO L226 Difference]: Without dead ends: 17928 [2021-08-06 14:03:41,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1229.5ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17928 states. [2021-08-06 14:03:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17928 to 10856. [2021-08-06 14:03:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10856 states, 10854 states have (on average 2.6960567532706836) internal successors, (29263), 10855 states have internal predecessors, (29263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:41,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10856 states to 10856 states and 29263 transitions. [2021-08-06 14:03:41,447 INFO L78 Accepts]: Start accepts. Automaton has 10856 states and 29263 transitions. Word has length 114 [2021-08-06 14:03:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:41,447 INFO L470 AbstractCegarLoop]: Abstraction has 10856 states and 29263 transitions. [2021-08-06 14:03:41,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 10856 states and 29263 transitions. [2021-08-06 14:03:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:41,472 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:41,472 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] [2021-08-06 14:03:41,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-08-06 14:03:41,472 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)] === [2021-08-06 14:03:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1019699014, now seen corresponding path program 164 times [2021-08-06 14:03:41,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:41,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028138220] [2021-08-06 14:03:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:41,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:41,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:41,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:41,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028138220] [2021-08-06 14:03:41,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028138220] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:41,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:41,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:41,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245191451] [2021-08-06 14:03:41,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:41,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:41,993 INFO L87 Difference]: Start difference. First operand 10856 states and 29263 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:43,688 INFO L93 Difference]: Finished difference Result 11633 states and 30735 transitions. [2021-08-06 14:03:43,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:43,688 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:43,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:43,709 INFO L225 Difference]: With dead ends: 11633 [2021-08-06 14:03:43,710 INFO L226 Difference]: Without dead ends: 11633 [2021-08-06 14:03:43,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1410.8ms TimeCoverageRelationStatistics Valid=288, Invalid=704, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11633 states. [2021-08-06 14:03:43,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11633 to 9440. [2021-08-06 14:03:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9440 states, 9438 states have (on average 2.6807586353040898) internal successors, (25301), 9439 states have internal predecessors, (25301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:43,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9440 states to 9440 states and 25301 transitions. [2021-08-06 14:03:43,910 INFO L78 Accepts]: Start accepts. Automaton has 9440 states and 25301 transitions. Word has length 114 [2021-08-06 14:03:43,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:43,910 INFO L470 AbstractCegarLoop]: Abstraction has 9440 states and 25301 transitions. [2021-08-06 14:03:43,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:43,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9440 states and 25301 transitions. [2021-08-06 14:03:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:43,923 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:43,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:43,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-08-06 14:03:43,923 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)] === [2021-08-06 14:03:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:43,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2057821380, now seen corresponding path program 165 times [2021-08-06 14:03:43,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:43,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834119392] [2021-08-06 14:03:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:43,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:44,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:44,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834119392] [2021-08-06 14:03:44,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834119392] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:44,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:44,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-06 14:03:44,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626727047] [2021-08-06 14:03:44,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-06 14:03:44,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-06 14:03:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-08-06 14:03:44,462 INFO L87 Difference]: Start difference. First operand 9440 states and 25301 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) [2021-08-06 14:03:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:45,773 INFO L93 Difference]: Finished difference Result 11007 states and 28653 transitions. [2021-08-06 14:03:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-06 14:03:45,774 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 [2021-08-06 14:03:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:45,793 INFO L225 Difference]: With dead ends: 11007 [2021-08-06 14:03:45,793 INFO L226 Difference]: Without dead ends: 11007 [2021-08-06 14:03:45,793 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1067.7ms TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2021-08-06 14:03:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11007 states. [2021-08-06 14:03:46,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11007 to 9205. [2021-08-06 14:03:46,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9205 states, 9203 states have (on average 2.6906443551015973) internal successors, (24762), 9204 states have internal predecessors, (24762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9205 states to 9205 states and 24762 transitions. [2021-08-06 14:03:46,125 INFO L78 Accepts]: Start accepts. Automaton has 9205 states and 24762 transitions. Word has length 114 [2021-08-06 14:03:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:46,125 INFO L470 AbstractCegarLoop]: Abstraction has 9205 states and 24762 transitions. [2021-08-06 14:03:46,125 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) [2021-08-06 14:03:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9205 states and 24762 transitions. [2021-08-06 14:03:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:46,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:46,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:46,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-08-06 14:03:46,141 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)] === [2021-08-06 14:03:46,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:46,142 INFO L82 PathProgramCache]: Analyzing trace with hash 2017177292, now seen corresponding path program 48 times [2021-08-06 14:03:46,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:46,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120881016] [2021-08-06 14:03:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:46,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:47,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:47,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120881016] [2021-08-06 14:03:47,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120881016] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:47,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:47,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:03:47,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133914005] [2021-08-06 14:03:47,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:03:47,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:03:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:03:47,363 INFO L87 Difference]: Start difference. First operand 9205 states and 24762 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:51,867 INFO L93 Difference]: Finished difference Result 14742 states and 39634 transitions. [2021-08-06 14:03:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 14:03:51,868 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:03:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:51,897 INFO L225 Difference]: With dead ends: 14742 [2021-08-06 14:03:51,897 INFO L226 Difference]: Without dead ends: 14642 [2021-08-06 14:03:51,898 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 3332.4ms TimeCoverageRelationStatistics Valid=1095, Invalid=3461, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 14:03:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14642 states. [2021-08-06 14:03:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14642 to 11021. [2021-08-06 14:03:52,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11019 states have (on average 2.7085034939649697) internal successors, (29845), 11020 states have internal predecessors, (29845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:52,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 29845 transitions. [2021-08-06 14:03:52,154 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 29845 transitions. Word has length 114 [2021-08-06 14:03:52,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:52,154 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 29845 transitions. [2021-08-06 14:03:52,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:52,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 29845 transitions. [2021-08-06 14:03:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:52,172 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:52,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:52,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-08-06 14:03:52,173 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)] === [2021-08-06 14:03:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:52,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1053563026, now seen corresponding path program 166 times [2021-08-06 14:03:52,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:52,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776128582] [2021-08-06 14:03:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:52,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:52,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:52,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:52,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776128582] [2021-08-06 14:03:52,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776128582] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:52,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:52,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:52,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125815645] [2021-08-06 14:03:52,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:52,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:52,658 INFO L87 Difference]: Start difference. First operand 11021 states and 29845 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:54,383 INFO L93 Difference]: Finished difference Result 20095 states and 53388 transitions. [2021-08-06 14:03:54,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:54,383 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 [2021-08-06 14:03:54,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:54,419 INFO L225 Difference]: With dead ends: 20095 [2021-08-06 14:03:54,420 INFO L226 Difference]: Without dead ends: 20095 [2021-08-06 14:03:54,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1453.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20095 states. [2021-08-06 14:03:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20095 to 10845. [2021-08-06 14:03:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10845 states, 10843 states have (on average 2.705247625195979) internal successors, (29333), 10844 states have internal predecessors, (29333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10845 states to 10845 states and 29333 transitions. [2021-08-06 14:03:54,743 INFO L78 Accepts]: Start accepts. Automaton has 10845 states and 29333 transitions. Word has length 114 [2021-08-06 14:03:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:54,743 INFO L470 AbstractCegarLoop]: Abstraction has 10845 states and 29333 transitions. [2021-08-06 14:03:54,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:54,743 INFO L276 IsEmpty]: Start isEmpty. Operand 10845 states and 29333 transitions. [2021-08-06 14:03:54,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:54,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:54,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:54,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-08-06 14:03:54,761 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)] === [2021-08-06 14:03:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash 17456462, now seen corresponding path program 167 times [2021-08-06 14:03:54,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:54,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205790489] [2021-08-06 14:03:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:54,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:55,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:55,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205790489] [2021-08-06 14:03:55,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205790489] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:55,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:55,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:55,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390665912] [2021-08-06 14:03:55,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:55,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:55,256 INFO L87 Difference]: Start difference. First operand 10845 states and 29333 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:57,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:03:57,135 INFO L93 Difference]: Finished difference Result 19939 states and 52851 transitions. [2021-08-06 14:03:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:03:57,136 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 [2021-08-06 14:03:57,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:03:57,183 INFO L225 Difference]: With dead ends: 19939 [2021-08-06 14:03:57,183 INFO L226 Difference]: Without dead ends: 19939 [2021-08-06 14:03:57,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1562.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:03:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19939 states. [2021-08-06 14:03:57,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19939 to 10757. [2021-08-06 14:03:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 10755 states have (on average 2.703579730357973) internal successors, (29077), 10756 states have internal predecessors, (29077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 29077 transitions. [2021-08-06 14:03:57,489 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 29077 transitions. Word has length 114 [2021-08-06 14:03:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:03:57,490 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 29077 transitions. [2021-08-06 14:03:57,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:03:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 29077 transitions. [2021-08-06 14:03:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:03:57,506 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:03:57,506 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:03:57,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-08-06 14:03:57,507 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)] === [2021-08-06 14:03:57,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:03:57,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1221663636, now seen corresponding path program 168 times [2021-08-06 14:03:57,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:03:57,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510943583] [2021-08-06 14:03:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:03:57,507 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:03:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:03:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:03:58,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:03:58,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510943583] [2021-08-06 14:03:58,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510943583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:03:58,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:03:58,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:03:58,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120911979] [2021-08-06 14:03:58,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:03:58,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:03:58,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:03:58,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:03:58,244 INFO L87 Difference]: Start difference. First operand 10757 states and 29077 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:00,108 INFO L93 Difference]: Finished difference Result 18339 states and 48371 transitions. [2021-08-06 14:04:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:00,109 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:00,145 INFO L225 Difference]: With dead ends: 18339 [2021-08-06 14:04:00,145 INFO L226 Difference]: Without dead ends: 18339 [2021-08-06 14:04:00,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1624.3ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:00,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18339 states. [2021-08-06 14:04:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18339 to 9413. [2021-08-06 14:04:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9413 states, 9411 states have (on average 2.6878121347359474) internal successors, (25295), 9412 states have internal predecessors, (25295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9413 states to 9413 states and 25295 transitions. [2021-08-06 14:04:00,443 INFO L78 Accepts]: Start accepts. Automaton has 9413 states and 25295 transitions. Word has length 114 [2021-08-06 14:04:00,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:00,444 INFO L470 AbstractCegarLoop]: Abstraction has 9413 states and 25295 transitions. [2021-08-06 14:04:00,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 9413 states and 25295 transitions. [2021-08-06 14:04:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:00,460 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:00,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:00,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-08-06 14:04:00,460 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)] === [2021-08-06 14:04:00,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:00,461 INFO L82 PathProgramCache]: Analyzing trace with hash 928704106, now seen corresponding path program 49 times [2021-08-06 14:04:00,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:00,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383622005] [2021-08-06 14:04:00,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:00,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:01,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:01,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383622005] [2021-08-06 14:04:01,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383622005] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:01,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:01,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:01,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967709464] [2021-08-06 14:04:01,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:01,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:01,704 INFO L87 Difference]: Start difference. First operand 9413 states and 25295 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:06,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:06,312 INFO L93 Difference]: Finished difference Result 16363 states and 43799 transitions. [2021-08-06 14:04:06,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 14:04:06,313 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:06,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:06,345 INFO L225 Difference]: With dead ends: 16363 [2021-08-06 14:04:06,345 INFO L226 Difference]: Without dead ends: 16263 [2021-08-06 14:04:06,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 3384.4ms TimeCoverageRelationStatistics Valid=1198, Invalid=3772, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 14:04:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16263 states. [2021-08-06 14:04:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16263 to 10849. [2021-08-06 14:04:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10849 states, 10847 states have (on average 2.7035124919332536) internal successors, (29325), 10848 states have internal predecessors, (29325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10849 states to 10849 states and 29325 transitions. [2021-08-06 14:04:06,684 INFO L78 Accepts]: Start accepts. Automaton has 10849 states and 29325 transitions. Word has length 114 [2021-08-06 14:04:06,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:06,684 INFO L470 AbstractCegarLoop]: Abstraction has 10849 states and 29325 transitions. [2021-08-06 14:04:06,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:06,684 INFO L276 IsEmpty]: Start isEmpty. Operand 10849 states and 29325 transitions. [2021-08-06 14:04:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:06,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:06,701 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] [2021-08-06 14:04:06,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-08-06 14:04:06,701 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)] === [2021-08-06 14:04:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -2142036212, now seen corresponding path program 169 times [2021-08-06 14:04:06,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:06,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830270577] [2021-08-06 14:04:06,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:06,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:07,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:07,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830270577] [2021-08-06 14:04:07,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830270577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:07,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:07,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:07,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243805730] [2021-08-06 14:04:07,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:07,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:07,183 INFO L87 Difference]: Start difference. First operand 10849 states and 29325 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:09,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:09,146 INFO L93 Difference]: Finished difference Result 23707 states and 62512 transitions. [2021-08-06 14:04:09,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:09,146 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:09,193 INFO L225 Difference]: With dead ends: 23707 [2021-08-06 14:04:09,193 INFO L226 Difference]: Without dead ends: 23707 [2021-08-06 14:04:09,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1597.4ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:09,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23707 states. [2021-08-06 14:04:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23707 to 10761. [2021-08-06 14:04:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10761 states, 10759 states have (on average 2.7018310251882145) internal successors, (29069), 10760 states have internal predecessors, (29069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10761 states to 10761 states and 29069 transitions. [2021-08-06 14:04:09,532 INFO L78 Accepts]: Start accepts. Automaton has 10761 states and 29069 transitions. Word has length 114 [2021-08-06 14:04:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:09,532 INFO L470 AbstractCegarLoop]: Abstraction has 10761 states and 29069 transitions. [2021-08-06 14:04:09,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 10761 states and 29069 transitions. [2021-08-06 14:04:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:09,548 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:09,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:09,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-08-06 14:04:09,548 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)] === [2021-08-06 14:04:09,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:09,549 INFO L82 PathProgramCache]: Analyzing trace with hash 913810986, now seen corresponding path program 170 times [2021-08-06 14:04:09,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:09,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053096665] [2021-08-06 14:04:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:09,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:10,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:10,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053096665] [2021-08-06 14:04:10,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053096665] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:10,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:10,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:10,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880336394] [2021-08-06 14:04:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:10,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:10,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:10,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:10,160 INFO L87 Difference]: Start difference. First operand 10761 states and 29069 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:12,046 INFO L93 Difference]: Finished difference Result 22042 states and 57762 transitions. [2021-08-06 14:04:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:12,047 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 [2021-08-06 14:04:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:12,091 INFO L225 Difference]: With dead ends: 22042 [2021-08-06 14:04:12,091 INFO L226 Difference]: Without dead ends: 22042 [2021-08-06 14:04:12,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1596.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:12,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22042 states. [2021-08-06 14:04:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22042 to 9429. [2021-08-06 14:04:12,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9429 states, 9427 states have (on average 2.6881298398217885) internal successors, (25341), 9428 states have internal predecessors, (25341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9429 states to 9429 states and 25341 transitions. [2021-08-06 14:04:12,370 INFO L78 Accepts]: Start accepts. Automaton has 9429 states and 25341 transitions. Word has length 114 [2021-08-06 14:04:12,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:12,370 INFO L470 AbstractCegarLoop]: Abstraction has 9429 states and 25341 transitions. [2021-08-06 14:04:12,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9429 states and 25341 transitions. [2021-08-06 14:04:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:12,385 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:12,385 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:12,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-08-06 14:04:12,385 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)] === [2021-08-06 14:04:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1520757588, now seen corresponding path program 50 times [2021-08-06 14:04:12,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:12,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074189102] [2021-08-06 14:04:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:12,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:13,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:13,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074189102] [2021-08-06 14:04:13,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074189102] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:13,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:13,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:13,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065671216] [2021-08-06 14:04:13,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:13,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:13,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:13,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:13,590 INFO L87 Difference]: Start difference. First operand 9429 states and 25341 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:18,497 INFO L93 Difference]: Finished difference Result 15886 states and 42450 transitions. [2021-08-06 14:04:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-06 14:04:18,497 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:18,520 INFO L225 Difference]: With dead ends: 15886 [2021-08-06 14:04:18,521 INFO L226 Difference]: Without dead ends: 15776 [2021-08-06 14:04:18,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3703.7ms TimeCoverageRelationStatistics Valid=1343, Invalid=4207, Unknown=0, NotChecked=0, Total=5550 [2021-08-06 14:04:18,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15776 states. [2021-08-06 14:04:18,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15776 to 10863. [2021-08-06 14:04:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10863 states, 10861 states have (on average 2.703066016020624) internal successors, (29358), 10862 states have internal predecessors, (29358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10863 states to 10863 states and 29358 transitions. [2021-08-06 14:04:18,700 INFO L78 Accepts]: Start accepts. Automaton has 10863 states and 29358 transitions. Word has length 114 [2021-08-06 14:04:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:18,700 INFO L470 AbstractCegarLoop]: Abstraction has 10863 states and 29358 transitions. [2021-08-06 14:04:18,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10863 states and 29358 transitions. [2021-08-06 14:04:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:18,714 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:18,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:18,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-08-06 14:04:18,714 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)] === [2021-08-06 14:04:18,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash -296530610, now seen corresponding path program 171 times [2021-08-06 14:04:18,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:18,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144395083] [2021-08-06 14:04:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:18,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:19,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:19,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144395083] [2021-08-06 14:04:19,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144395083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:19,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:19,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:19,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041448654] [2021-08-06 14:04:19,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:19,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:19,126 INFO L87 Difference]: Start difference. First operand 10863 states and 29358 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:20,569 INFO L93 Difference]: Finished difference Result 21298 states and 56035 transitions. [2021-08-06 14:04:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:20,603 INFO L225 Difference]: With dead ends: 21298 [2021-08-06 14:04:20,603 INFO L226 Difference]: Without dead ends: 21298 [2021-08-06 14:04:20,603 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1237.5ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:20,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21298 states. [2021-08-06 14:04:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21298 to 10759. [2021-08-06 14:04:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 10757 states have (on average 2.701124848935577) internal successors, (29056), 10758 states have internal predecessors, (29056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:20,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 29056 transitions. [2021-08-06 14:04:20,902 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 29056 transitions. Word has length 114 [2021-08-06 14:04:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:20,902 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 29056 transitions. [2021-08-06 14:04:20,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:20,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 29056 transitions. [2021-08-06 14:04:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:20,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:20,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:20,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-08-06 14:04:20,915 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)] === [2021-08-06 14:04:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:20,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1228549238, now seen corresponding path program 172 times [2021-08-06 14:04:20,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:20,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380220650] [2021-08-06 14:04:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:20,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:21,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:21,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380220650] [2021-08-06 14:04:21,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380220650] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:21,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:21,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:21,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293042514] [2021-08-06 14:04:21,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:21,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:21,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:21,332 INFO L87 Difference]: Start difference. First operand 10759 states and 29056 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:22,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:22,771 INFO L93 Difference]: Finished difference Result 18523 states and 48873 transitions. [2021-08-06 14:04:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:22,799 INFO L225 Difference]: With dead ends: 18523 [2021-08-06 14:04:22,800 INFO L226 Difference]: Without dead ends: 18523 [2021-08-06 14:04:22,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1256.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:22,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18523 states. [2021-08-06 14:04:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18523 to 9407. [2021-08-06 14:04:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9407 states, 9405 states have (on average 2.686443381180223) internal successors, (25266), 9406 states have internal predecessors, (25266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9407 states to 9407 states and 25266 transitions. [2021-08-06 14:04:23,010 INFO L78 Accepts]: Start accepts. Automaton has 9407 states and 25266 transitions. Word has length 114 [2021-08-06 14:04:23,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:23,011 INFO L470 AbstractCegarLoop]: Abstraction has 9407 states and 25266 transitions. [2021-08-06 14:04:23,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9407 states and 25266 transitions. [2021-08-06 14:04:23,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:23,023 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:23,023 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] [2021-08-06 14:04:23,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-08-06 14:04:23,023 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)] === [2021-08-06 14:04:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1313408626, now seen corresponding path program 51 times [2021-08-06 14:04:23,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:23,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166204253] [2021-08-06 14:04:23,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:23,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:24,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:24,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166204253] [2021-08-06 14:04:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166204253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:24,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:24,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:24,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799785136] [2021-08-06 14:04:24,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:24,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:24,091 INFO L87 Difference]: Start difference. First operand 9407 states and 25266 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:27,576 INFO L93 Difference]: Finished difference Result 14643 states and 39271 transitions. [2021-08-06 14:04:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-06 14:04:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:27,596 INFO L225 Difference]: With dead ends: 14643 [2021-08-06 14:04:27,596 INFO L226 Difference]: Without dead ends: 14543 [2021-08-06 14:04:27,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 2483.2ms TimeCoverageRelationStatistics Valid=1051, Invalid=3371, Unknown=0, NotChecked=0, Total=4422 [2021-08-06 14:04:27,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14543 states. [2021-08-06 14:04:27,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14543 to 10875. [2021-08-06 14:04:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10875 states, 10873 states have (on average 2.702841901958981) internal successors, (29388), 10874 states have internal predecessors, (29388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:27,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10875 states to 10875 states and 29388 transitions. [2021-08-06 14:04:27,764 INFO L78 Accepts]: Start accepts. Automaton has 10875 states and 29388 transitions. Word has length 114 [2021-08-06 14:04:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:27,764 INFO L470 AbstractCegarLoop]: Abstraction has 10875 states and 29388 transitions. [2021-08-06 14:04:27,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 10875 states and 29388 transitions. [2021-08-06 14:04:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:27,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:27,778 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] [2021-08-06 14:04:27,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-08-06 14:04:27,778 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)] === [2021-08-06 14:04:27,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:27,779 INFO L82 PathProgramCache]: Analyzing trace with hash -89181648, now seen corresponding path program 173 times [2021-08-06 14:04:27,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:27,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294034791] [2021-08-06 14:04:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:27,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:28,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294034791] [2021-08-06 14:04:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294034791] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:28,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:28,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:28,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934512238] [2021-08-06 14:04:28,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:28,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:28,219 INFO L87 Difference]: Start difference. First operand 10875 states and 29388 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:29,692 INFO L93 Difference]: Finished difference Result 21131 states and 55910 transitions. [2021-08-06 14:04:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:29,692 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 [2021-08-06 14:04:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:29,727 INFO L225 Difference]: With dead ends: 21131 [2021-08-06 14:04:29,727 INFO L226 Difference]: Without dead ends: 21131 [2021-08-06 14:04:29,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1260.9ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21131 states. [2021-08-06 14:04:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21131 to 10787. [2021-08-06 14:04:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10787 states, 10785 states have (on average 2.701159017153454) internal successors, (29132), 10786 states have internal predecessors, (29132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10787 states to 10787 states and 29132 transitions. [2021-08-06 14:04:29,973 INFO L78 Accepts]: Start accepts. Automaton has 10787 states and 29132 transitions. Word has length 114 [2021-08-06 14:04:29,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:29,973 INFO L470 AbstractCegarLoop]: Abstraction has 10787 states and 29132 transitions. [2021-08-06 14:04:29,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:29,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10787 states and 29132 transitions. [2021-08-06 14:04:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:29,988 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:29,988 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] [2021-08-06 14:04:29,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-08-06 14:04:29,988 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)] === [2021-08-06 14:04:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1328301746, now seen corresponding path program 174 times [2021-08-06 14:04:29,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:29,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071055776] [2021-08-06 14:04:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:29,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:30,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:30,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071055776] [2021-08-06 14:04:30,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071055776] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:30,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:30,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:30,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678193815] [2021-08-06 14:04:30,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:30,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:30,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:30,589 INFO L87 Difference]: Start difference. First operand 10787 states and 29132 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:32,475 INFO L93 Difference]: Finished difference Result 19466 states and 51160 transitions. [2021-08-06 14:04:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:32,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:32,515 INFO L225 Difference]: With dead ends: 19466 [2021-08-06 14:04:32,515 INFO L226 Difference]: Without dead ends: 19466 [2021-08-06 14:04:32,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1619.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19466 states. [2021-08-06 14:04:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19466 to 9455. [2021-08-06 14:04:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 9453 states have (on average 2.687400825134878) internal successors, (25404), 9454 states have internal predecessors, (25404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 25404 transitions. [2021-08-06 14:04:32,788 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 25404 transitions. Word has length 114 [2021-08-06 14:04:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:32,788 INFO L470 AbstractCegarLoop]: Abstraction has 9455 states and 25404 transitions. [2021-08-06 14:04:32,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 25404 transitions. [2021-08-06 14:04:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:32,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:32,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:32,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-08-06 14:04:32,804 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)] === [2021-08-06 14:04:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 532096976, now seen corresponding path program 52 times [2021-08-06 14:04:32,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:32,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510967097] [2021-08-06 14:04:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:32,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:34,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:34,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510967097] [2021-08-06 14:04:34,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510967097] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:34,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:34,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:34,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617086608] [2021-08-06 14:04:34,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:34,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:34,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:34,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:34,052 INFO L87 Difference]: Start difference. First operand 9455 states and 25404 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:38,648 INFO L93 Difference]: Finished difference Result 15779 states and 42061 transitions. [2021-08-06 14:04:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-08-06 14:04:38,648 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:38,683 INFO L225 Difference]: With dead ends: 15779 [2021-08-06 14:04:38,683 INFO L226 Difference]: Without dead ends: 15669 [2021-08-06 14:04:38,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 3323.5ms TimeCoverageRelationStatistics Valid=1196, Invalid=3774, Unknown=0, NotChecked=0, Total=4970 [2021-08-06 14:04:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15669 states. [2021-08-06 14:04:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15669 to 10883. [2021-08-06 14:04:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10883 states, 10881 states have (on average 2.7026927672088963) internal successors, (29408), 10882 states have internal predecessors, (29408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:38,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10883 states to 10883 states and 29408 transitions. [2021-08-06 14:04:38,953 INFO L78 Accepts]: Start accepts. Automaton has 10883 states and 29408 transitions. Word has length 114 [2021-08-06 14:04:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:38,953 INFO L470 AbstractCegarLoop]: Abstraction has 10883 states and 29408 transitions. [2021-08-06 14:04:38,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10883 states and 29408 transitions. [2021-08-06 14:04:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:38,967 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:38,967 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] [2021-08-06 14:04:38,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-08-06 14:04:38,967 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)] === [2021-08-06 14:04:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1756323954, now seen corresponding path program 175 times [2021-08-06 14:04:38,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:38,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8287781] [2021-08-06 14:04:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:38,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:39,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:39,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8287781] [2021-08-06 14:04:39,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8287781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:39,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:39,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:39,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403083370] [2021-08-06 14:04:39,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:39,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:39,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:39,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:39,436 INFO L87 Difference]: Start difference. First operand 10883 states and 29408 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:41,407 INFO L93 Difference]: Finished difference Result 22409 states and 58778 transitions. [2021-08-06 14:04:41,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:41,407 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 [2021-08-06 14:04:41,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:41,452 INFO L225 Difference]: With dead ends: 22409 [2021-08-06 14:04:41,452 INFO L226 Difference]: Without dead ends: 22409 [2021-08-06 14:04:41,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1574.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22409 states. [2021-08-06 14:04:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22409 to 10779. [2021-08-06 14:04:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10779 states, 10777 states have (on average 2.7007516006309733) internal successors, (29106), 10778 states have internal predecessors, (29106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 29106 transitions. [2021-08-06 14:04:41,775 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 29106 transitions. Word has length 114 [2021-08-06 14:04:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:41,775 INFO L470 AbstractCegarLoop]: Abstraction has 10779 states and 29106 transitions. [2021-08-06 14:04:41,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 29106 transitions. [2021-08-06 14:04:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:41,792 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:41,792 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] [2021-08-06 14:04:41,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-08-06 14:04:41,792 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)] === [2021-08-06 14:04:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:41,793 INFO L82 PathProgramCache]: Analyzing trace with hash 824305326, now seen corresponding path program 176 times [2021-08-06 14:04:41,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:41,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357635841] [2021-08-06 14:04:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:41,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:42,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:42,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:42,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357635841] [2021-08-06 14:04:42,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357635841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:42,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:42,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:42,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101982894] [2021-08-06 14:04:42,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:42,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:42,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:42,694 INFO L87 Difference]: Start difference. First operand 10779 states and 29106 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:44,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:44,612 INFO L93 Difference]: Finished difference Result 19634 states and 51616 transitions. [2021-08-06 14:04:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:44,613 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:44,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:44,652 INFO L225 Difference]: With dead ends: 19634 [2021-08-06 14:04:44,653 INFO L226 Difference]: Without dead ends: 19634 [2021-08-06 14:04:44,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1629.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19634 states. [2021-08-06 14:04:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19634 to 9439. [2021-08-06 14:04:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9437 states have (on average 2.687082759351489) internal successors, (25358), 9438 states have internal predecessors, (25358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:44,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 25358 transitions. [2021-08-06 14:04:44,935 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 25358 transitions. Word has length 114 [2021-08-06 14:04:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:44,935 INFO L470 AbstractCegarLoop]: Abstraction has 9439 states and 25358 transitions. [2021-08-06 14:04:44,935 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) [2021-08-06 14:04:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 25358 transitions. [2021-08-06 14:04:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:44,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:44,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:44,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-08-06 14:04:44,952 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)] === [2021-08-06 14:04:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:44,952 INFO L82 PathProgramCache]: Analyzing trace with hash 664854730, now seen corresponding path program 53 times [2021-08-06 14:04:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:44,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362452994] [2021-08-06 14:04:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:44,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:46,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:46,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:46,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362452994] [2021-08-06 14:04:46,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362452994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:46,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:46,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:46,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578672874] [2021-08-06 14:04:46,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:46,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:46,153 INFO L87 Difference]: Start difference. First operand 9439 states and 25358 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:49,666 INFO L93 Difference]: Finished difference Result 15171 states and 40543 transitions. [2021-08-06 14:04:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-06 14:04:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:49,693 INFO L225 Difference]: With dead ends: 15171 [2021-08-06 14:04:49,693 INFO L226 Difference]: Without dead ends: 15019 [2021-08-06 14:04:49,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2505.4ms TimeCoverageRelationStatistics Valid=1085, Invalid=3471, Unknown=0, NotChecked=0, Total=4556 [2021-08-06 14:04:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15019 states. [2021-08-06 14:04:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15019 to 11847. [2021-08-06 14:04:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11847 states, 11845 states have (on average 2.7133811734909243) internal successors, (32140), 11846 states have internal predecessors, (32140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 32140 transitions. [2021-08-06 14:04:49,933 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 32140 transitions. Word has length 114 [2021-08-06 14:04:49,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:49,933 INFO L470 AbstractCegarLoop]: Abstraction has 11847 states and 32140 transitions. [2021-08-06 14:04:49,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 32140 transitions. [2021-08-06 14:04:49,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:49,948 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:49,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:49,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-08-06 14:04:49,948 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)] === [2021-08-06 14:04:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1889081708, now seen corresponding path program 177 times [2021-08-06 14:04:49,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:49,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123137426] [2021-08-06 14:04:49,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:49,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:50,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:50,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123137426] [2021-08-06 14:04:50,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123137426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:50,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:50,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:50,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771768840] [2021-08-06 14:04:50,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:50,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:50,369 INFO L87 Difference]: Start difference. First operand 11847 states and 32140 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:51,838 INFO L93 Difference]: Finished difference Result 18678 states and 49331 transitions. [2021-08-06 14:04:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:51,870 INFO L225 Difference]: With dead ends: 18678 [2021-08-06 14:04:51,871 INFO L226 Difference]: Without dead ends: 18678 [2021-08-06 14:04:51,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1251.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:51,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18678 states. [2021-08-06 14:04:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18678 to 11743. [2021-08-06 14:04:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11743 states, 11741 states have (on average 2.711694063538029) internal successors, (31838), 11742 states have internal predecessors, (31838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11743 states to 11743 states and 31838 transitions. [2021-08-06 14:04:52,126 INFO L78 Accepts]: Start accepts. Automaton has 11743 states and 31838 transitions. Word has length 114 [2021-08-06 14:04:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:52,126 INFO L470 AbstractCegarLoop]: Abstraction has 11743 states and 31838 transitions. [2021-08-06 14:04:52,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11743 states and 31838 transitions. [2021-08-06 14:04:52,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:52,142 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:52,142 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:52,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-08-06 14:04:52,142 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)] === [2021-08-06 14:04:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:52,143 INFO L82 PathProgramCache]: Analyzing trace with hash 957063080, now seen corresponding path program 178 times [2021-08-06 14:04:52,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:52,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807322246] [2021-08-06 14:04:52,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:52,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:52,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:52,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807322246] [2021-08-06 14:04:52,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807322246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:52,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:52,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:52,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951072742] [2021-08-06 14:04:52,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:52,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:52,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:52,614 INFO L87 Difference]: Start difference. First operand 11743 states and 31838 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:54,061 INFO L93 Difference]: Finished difference Result 18578 states and 49049 transitions. [2021-08-06 14:04:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:54,061 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:54,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:54,093 INFO L225 Difference]: With dead ends: 18578 [2021-08-06 14:04:54,093 INFO L226 Difference]: Without dead ends: 18578 [2021-08-06 14:04:54,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1295.6ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18578 states. [2021-08-06 14:04:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18578 to 11727. [2021-08-06 14:04:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11727 states, 11725 states have (on average 2.7114712153518123) internal successors, (31792), 11726 states have internal predecessors, (31792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 31792 transitions. [2021-08-06 14:04:54,337 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 31792 transitions. Word has length 114 [2021-08-06 14:04:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:54,337 INFO L470 AbstractCegarLoop]: Abstraction has 11727 states and 31792 transitions. [2021-08-06 14:04:54,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 31792 transitions. [2021-08-06 14:04:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:54,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:54,352 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] [2021-08-06 14:04:54,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-08-06 14:04:54,352 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)] === [2021-08-06 14:04:54,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:54,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1760327696, now seen corresponding path program 179 times [2021-08-06 14:04:54,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:54,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673129544] [2021-08-06 14:04:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:54,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:54,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:54,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:54,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673129544] [2021-08-06 14:04:54,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673129544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:54,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:54,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:04:54,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338709751] [2021-08-06 14:04:54,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:04:54,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:54,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:04:54,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:04:54,815 INFO L87 Difference]: Start difference. First operand 11727 states and 31792 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:04:56,317 INFO L93 Difference]: Finished difference Result 16121 states and 42715 transitions. [2021-08-06 14:04:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:04:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:04:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:04:56,346 INFO L225 Difference]: With dead ends: 16121 [2021-08-06 14:04:56,346 INFO L226 Difference]: Without dead ends: 16121 [2021-08-06 14:04:56,346 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1312.0ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:04:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16121 states. [2021-08-06 14:04:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16121 to 10139. [2021-08-06 14:04:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10139 states, 10137 states have (on average 2.6946828450231823) internal successors, (27316), 10138 states have internal predecessors, (27316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10139 states to 10139 states and 27316 transitions. [2021-08-06 14:04:56,555 INFO L78 Accepts]: Start accepts. Automaton has 10139 states and 27316 transitions. Word has length 114 [2021-08-06 14:04:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:04:56,556 INFO L470 AbstractCegarLoop]: Abstraction has 10139 states and 27316 transitions. [2021-08-06 14:04:56,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:04:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10139 states and 27316 transitions. [2021-08-06 14:04:56,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:04:56,569 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:04:56,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:04:56,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-08-06 14:04:56,570 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)] === [2021-08-06 14:04:56,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:04:56,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1179156652, now seen corresponding path program 54 times [2021-08-06 14:04:56,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:04:56,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508497645] [2021-08-06 14:04:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:04:56,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:04:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:04:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:04:57,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:04:57,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508497645] [2021-08-06 14:04:57,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508497645] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:04:57,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:04:57,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-08-06 14:04:57,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145904635] [2021-08-06 14:04:57,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-06 14:04:57,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:04:57,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-06 14:04:57,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2021-08-06 14:04:57,535 INFO L87 Difference]: Start difference. First operand 10139 states and 27316 transitions. Second operand has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:05:01,568 INFO L93 Difference]: Finished difference Result 16119 states and 43281 transitions. [2021-08-06 14:05:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-06 14:05:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:05:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:05:01,596 INFO L225 Difference]: With dead ends: 16119 [2021-08-06 14:05:01,596 INFO L226 Difference]: Without dead ends: 16025 [2021-08-06 14:05:01,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2976.9ms TimeCoverageRelationStatistics Valid=1239, Invalid=3873, Unknown=0, NotChecked=0, Total=5112 [2021-08-06 14:05:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16025 states. [2021-08-06 14:05:01,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16025 to 11919. [2021-08-06 14:05:01,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11919 states, 11917 states have (on average 2.7141058991356886) internal successors, (32344), 11918 states have internal predecessors, (32344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11919 states to 11919 states and 32344 transitions. [2021-08-06 14:05:01,852 INFO L78 Accepts]: Start accepts. Automaton has 11919 states and 32344 transitions. Word has length 114 [2021-08-06 14:05:01,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:05:01,852 INFO L470 AbstractCegarLoop]: Abstraction has 11919 states and 32344 transitions. [2021-08-06 14:05:01,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.222222222222222) internal successors, (114), 27 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11919 states and 32344 transitions. [2021-08-06 14:05:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:05:01,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:05:01,869 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] [2021-08-06 14:05:01,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-08-06 14:05:01,869 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)] === [2021-08-06 14:05:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:05:01,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1891583666, now seen corresponding path program 180 times [2021-08-06 14:05:01,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:05:01,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424864484] [2021-08-06 14:05:01,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:05:01,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:05:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:05:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:05:02,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:05:02,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424864484] [2021-08-06 14:05:02,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424864484] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:05:02,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:05:02,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:05:02,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577786803] [2021-08-06 14:05:02,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:05:02,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:05:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:05:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:05:02,370 INFO L87 Difference]: Start difference. First operand 11919 states and 32344 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 14:05:04,012 INFO L93 Difference]: Finished difference Result 24594 states and 65131 transitions. [2021-08-06 14:05:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 14:05:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-08-06 14:05:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 14:05:04,061 INFO L225 Difference]: With dead ends: 24594 [2021-08-06 14:05:04,062 INFO L226 Difference]: Without dead ends: 24594 [2021-08-06 14:05:04,062 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1319.2ms TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2021-08-06 14:05:04,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24594 states. [2021-08-06 14:05:04,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24594 to 11951. [2021-08-06 14:05:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11951 states, 11949 states have (on average 2.7145367813206125) internal successors, (32436), 11950 states have internal predecessors, (32436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11951 states to 11951 states and 32436 transitions. [2021-08-06 14:05:04,385 INFO L78 Accepts]: Start accepts. Automaton has 11951 states and 32436 transitions. Word has length 114 [2021-08-06 14:05:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 14:05:04,385 INFO L470 AbstractCegarLoop]: Abstraction has 11951 states and 32436 transitions. [2021-08-06 14:05:04,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 14:05:04,386 INFO L276 IsEmpty]: Start isEmpty. Operand 11951 states and 32436 transitions. [2021-08-06 14:05:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-06 14:05:04,403 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 14:05:04,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 14:05:04,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-08-06 14:05:04,403 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)] === [2021-08-06 14:05:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 14:05:04,404 INFO L82 PathProgramCache]: Analyzing trace with hash -820564178, now seen corresponding path program 181 times [2021-08-06 14:05:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 14:05:04,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034145125] [2021-08-06 14:05:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 14:05:04,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 14:05:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 14:05:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 14:05:04,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 14:05:04,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034145125] [2021-08-06 14:05:04,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034145125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 14:05:04,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 14:05:04,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-08-06 14:05:04,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975521310] [2021-08-06 14:05:04,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-06 14:05:04,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 14:05:04,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-06 14:05:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-08-06 14:05:04,819 INFO L87 Difference]: Start difference. First operand 11951 states and 32436 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 0 states have call successors, (0), 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... [2021-08-06 14:05:05,319 WARN L223 SmtUtils]: Removed 25 from assertion stack [2021-08-06 14:05:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 14:05:05,319 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-08-06 14:05:05,320 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. [2021-08-06 14:05:05,321 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,322 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,322 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,322 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,322 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-06 14:05:05,322 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 14:05:05,323 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 14:05:05,327 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 14:05:05,327 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 14:05:05,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 02:05:05 BasicIcfg [2021-08-06 14:05:05,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 14:05:05,330 INFO L168 Benchmark]: Toolchain (without parser) took 742509.11 ms. Allocated memory was 199.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 160.8 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 280.0 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 199.2 MB. Free memory is still 180.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 870.03 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 138.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.48 ms. Allocated memory is still 199.2 MB. Free memory was 138.2 MB in the beginning and 135.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: Boogie Preprocessor took 69.36 ms. Allocated memory is still 199.2 MB. Free memory was 134.5 MB in the beginning and 131.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: RCFGBuilder took 623.23 ms. Allocated memory is still 199.2 MB. Free memory was 131.9 MB in the beginning and 83.6 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,330 INFO L168 Benchmark]: TraceAbstraction took 740871.30 ms. Allocated memory was 199.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 83.1 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 202.2 MB. Max. memory is 8.0 GB. [2021-08-06 14:05:05,331 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 199.2 MB. Free memory is still 180.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 870.03 ms. Allocated memory is still 199.2 MB. Free memory was 160.6 MB in the beginning and 138.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 60.48 ms. Allocated memory is still 199.2 MB. Free memory was 138.2 MB in the beginning and 135.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.36 ms. Allocated memory is still 199.2 MB. Free memory was 134.5 MB in the beginning and 131.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.23 ms. Allocated memory is still 199.2 MB. Free memory was 131.9 MB in the beginning and 83.6 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 740871.30 ms. Allocated memory was 199.2 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 83.1 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 202.2 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 (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - TimeoutResultAtElement [Line: 1693]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - 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 (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - 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 (11951states) and FLOYD_HOARE automaton (currently 11 states, 18 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 46 for 11ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 4 procedures, 178 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 740728.7ms, OverallIterations: 240, TraceHistogramMax: 1, EmptinessCheckTime: 3273.2ms, AutomataDifference: 527027.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 259.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89624 SDtfs, 300008 SDslu, 575969 SDs, 0 SdLazy, 225822 SolverSat, 8965 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130056.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10775 GetRequests, 1180 SyntacticMatches, 283 SemanticMatches, 9311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62304 ImplicationChecksByTransitivity, 398807.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11951occurred in iteration=239, InterpolantAutomatonStates: 5875, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60731.4ms AutomataMinimizationTime, 239 MinimizatonAttempts, 2563765 StatesRemovedByMinimization, 238 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 433.7ms SsaConstructionTime, 3331.8ms SatisfiabilityAnalysisTime, 142501.0ms InterpolantComputationTime, 27074 NumberOfCodeBlocks, 27074 NumberOfCodeBlocksAsserted, 240 NumberOfCheckSat, 26834 ConstructedInterpolants, 0 QuantifiedInterpolants, 275654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 240 InterpolantComputations, 240 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 [2021-08-06 14:05:05,345 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown