/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_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 11:44:30,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 11:44:30,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 11:44:30,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 11:44:30,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-08-21 11:44:30,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 11:44:30,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 11:44:30,360 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 11:44:30,360 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 11:44:30,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 11:44:30,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 11:44:30,363 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 11:44:30,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 11:44:30,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 11:44:30,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 11:44:30,365 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 11:44:30,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 11:44:30,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 11:44:30,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 11:44:30,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 11:44:30,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 11:44:30,366 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:30,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 11:44:30,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 11:44:30,381 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 11:44:30,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 11:44:30,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 11:44:30,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 11:44:30,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 11:44:30,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 11:44:30,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-21 11:44:30,727 INFO L275 PluginConnector]: CDTParser initialized [2021-08-21 11:44:30,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-08-21 11:44:30,800 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3dda30/38f2a8e0af874cf1ada4f30533c102eb/FLAG00eff1215 [2021-08-21 11:44:31,419 INFO L306 CDTParser]: Found 1 translation units. [2021-08-21 11:44:31,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-08-21 11:44:31,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3dda30/38f2a8e0af874cf1ada4f30533c102eb/FLAG00eff1215 [2021-08-21 11:44:31,648 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32c3dda30/38f2a8e0af874cf1ada4f30533c102eb [2021-08-21 11:44:31,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 11:44:31,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-21 11:44:31,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:31,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-21 11:44:31,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-21 11:44:31,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:31" (1/1) ... [2021-08-21 11:44:31,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f52bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:31, skipping insertion in model container [2021-08-21 11:44:31,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:44:31" (1/1) ... [2021-08-21 11:44:31,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-21 11:44:31,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-21 11:44:31,836 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-21 11:44:32,416 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-08-21 11:44:32,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:32,482 INFO L203 MainTranslator]: Completed pre-run [2021-08-21 11:44:32,492 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-08-21 11:44:32,514 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-08-21 11:44:32,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-21 11:44:32,611 INFO L208 MainTranslator]: Completed translation [2021-08-21 11:44:32,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32 WrapperNode [2021-08-21 11:44:32,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-21 11:44:32,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:32,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 11:44:32,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 11:44:32,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 11:44:32,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 11:44:32,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 11:44:32,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 11:44:32,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 11:44:32,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 11:44:32,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 11:44:32,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 11:44:32,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (1/1) ... [2021-08-21 11:44:32,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 11:44:32,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 11:44:32,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 11:44:32,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 11:44:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 11:44:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 11:44:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-08-21 11:44:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-08-21 11:44:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-21 11:44:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-21 11:44:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-21 11:44:32,795 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 11:44:33,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 11:44:33,506 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-08-21 11:44:33,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:33 BoogieIcfgContainer [2021-08-21 11:44:33,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 11:44:33,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 11:44:33,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 11:44:33,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 11:44:33,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:44:31" (1/3) ... [2021-08-21 11:44:33,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9231f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:33, skipping insertion in model container [2021-08-21 11:44:33,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:44:32" (2/3) ... [2021-08-21 11:44:33,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d9231f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:44:33, skipping insertion in model container [2021-08-21 11:44:33,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:44:33" (3/3) ... [2021-08-21 11:44:33,516 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-08-21 11:44:33,520 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 11:44:33,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 11:44:33,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-08-21 11:44:33,521 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 11:44:33,559 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,559 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,560 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,560 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,560 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,560 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,561 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,562 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,562 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,562 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,563 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,563 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,563 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,563 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,563 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,564 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,565 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,565 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,565 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,565 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,566 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,566 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,566 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,566 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,566 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,567 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,568 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,569 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,569 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,569 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,569 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,569 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,570 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,571 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,572 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,573 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,574 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,575 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,575 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,575 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,576 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,578 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,584 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,585 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,586 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,586 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,587 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,591 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,591 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,591 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,591 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,592 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,595 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,595 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,595 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,596 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-21 11:44:33,603 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-21 11:44:33,648 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 11:44:33,658 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 11:44:33,659 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-21 11:44:33,682 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 141 transitions, 298 flow [2021-08-21 11:44:33,836 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5052 states, 5044 states have (on average 2.792823156225218) internal successors, (14087), 5051 states have internal predecessors, (14087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:33,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 5052 states, 5044 states have (on average 2.792823156225218) internal successors, (14087), 5051 states have internal predecessors, (14087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-08-21 11:44:33,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:33,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:33,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:33,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1601756939, now seen corresponding path program 1 times [2021-08-21 11:44:33,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:33,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983046142] [2021-08-21 11:44:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:33,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:34,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:34,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983046142] [2021-08-21 11:44:34,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983046142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:34,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:34,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:34,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876027222] [2021-08-21 11:44:34,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:34,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:34,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:34,377 INFO L87 Difference]: Start difference. First operand has 5052 states, 5044 states have (on average 2.792823156225218) internal successors, (14087), 5051 states have internal predecessors, (14087), 0 states have call successors, (0), 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 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:34,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:34,878 INFO L93 Difference]: Finished difference Result 6778 states and 18536 transitions. [2021-08-21 11:44:34,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-21 11:44:34,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-08-21 11:44:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:34,925 INFO L225 Difference]: With dead ends: 6778 [2021-08-21 11:44:34,926 INFO L226 Difference]: Without dead ends: 5670 [2021-08-21 11:44:34,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-08-21 11:44:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5670 states. [2021-08-21 11:44:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5670 to 4390. [2021-08-21 11:44:35,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4385 states have (on average 2.723831242873432) internal successors, (11944), 4389 states have internal predecessors, (11944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 11944 transitions. [2021-08-21 11:44:35,155 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 11944 transitions. Word has length 48 [2021-08-21 11:44:35,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:35,155 INFO L470 AbstractCegarLoop]: Abstraction has 4390 states and 11944 transitions. [2021-08-21 11:44:35,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 11944 transitions. [2021-08-21 11:44:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-08-21 11:44:35,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:35,159 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] [2021-08-21 11:44:35,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 11:44:35,160 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash 350998619, now seen corresponding path program 1 times [2021-08-21 11:44:35,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:35,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324827667] [2021-08-21 11:44:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:35,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:35,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:35,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:35,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324827667] [2021-08-21 11:44:35,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324827667] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:35,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:35,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-21 11:44:35,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324155505] [2021-08-21 11:44:35,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-21 11:44:35,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:35,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-21 11:44:35,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-21 11:44:35,289 INFO L87 Difference]: Start difference. First operand 4390 states and 11944 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:35,617 INFO L93 Difference]: Finished difference Result 6106 states and 16454 transitions. [2021-08-21 11:44:35,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-21 11:44:35,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-08-21 11:44:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:35,646 INFO L225 Difference]: With dead ends: 6106 [2021-08-21 11:44:35,646 INFO L226 Difference]: Without dead ends: 5176 [2021-08-21 11:44:35,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 105.5ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-21 11:44:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-08-21 11:44:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 5006. [2021-08-21 11:44:35,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5002 states have (on average 2.72530987604958) internal successors, (13632), 5005 states have internal predecessors, (13632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 13632 transitions. [2021-08-21 11:44:35,838 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 13632 transitions. Word has length 54 [2021-08-21 11:44:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:35,839 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 13632 transitions. [2021-08-21 11:44:35,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:35,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 13632 transitions. [2021-08-21 11:44:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-08-21 11:44:35,851 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:35,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:35,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 11:44:35,852 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:35,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:35,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1372281656, now seen corresponding path program 1 times [2021-08-21 11:44:35,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:35,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202685299] [2021-08-21 11:44:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:35,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:36,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:36,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202685299] [2021-08-21 11:44:36,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202685299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:36,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:36,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-21 11:44:36,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161085573] [2021-08-21 11:44:36,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-21 11:44:36,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-21 11:44:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-21 11:44:36,036 INFO L87 Difference]: Start difference. First operand 5006 states and 13632 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:36,084 INFO L93 Difference]: Finished difference Result 1873 states and 4942 transitions. [2021-08-21 11:44:36,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-21 11:44:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-08-21 11:44:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:36,094 INFO L225 Difference]: With dead ends: 1873 [2021-08-21 11:44:36,094 INFO L226 Difference]: Without dead ends: 1873 [2021-08-21 11:44:36,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-21 11:44:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-08-21 11:44:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1873. [2021-08-21 11:44:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1871 states have (on average 2.6413682522715125) internal successors, (4942), 1872 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 4942 transitions. [2021-08-21 11:44:36,152 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 4942 transitions. Word has length 66 [2021-08-21 11:44:36,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:36,153 INFO L470 AbstractCegarLoop]: Abstraction has 1873 states and 4942 transitions. [2021-08-21 11:44:36,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:36,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 4942 transitions. [2021-08-21 11:44:36,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:36,159 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:36,159 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] [2021-08-21 11:44:36,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 11:44:36,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:36,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1230943499, now seen corresponding path program 1 times [2021-08-21 11:44:36,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:36,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276571028] [2021-08-21 11:44:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:36,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:37,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:37,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276571028] [2021-08-21 11:44:37,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276571028] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:37,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:37,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:37,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762202744] [2021-08-21 11:44:37,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:37,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:37,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:37,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:37,189 INFO L87 Difference]: Start difference. First operand 1873 states and 4942 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:38,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:38,652 INFO L93 Difference]: Finished difference Result 2262 states and 5798 transitions. [2021-08-21 11:44:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-21 11:44:38,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:38,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:38,663 INFO L225 Difference]: With dead ends: 2262 [2021-08-21 11:44:38,664 INFO L226 Difference]: Without dead ends: 2262 [2021-08-21 11:44:38,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1299.3ms TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2021-08-21 11:44:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2021-08-21 11:44:38,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2118. [2021-08-21 11:44:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2116 states have (on average 2.5997164461247637) internal successors, (5501), 2117 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:38,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 5501 transitions. [2021-08-21 11:44:38,720 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 5501 transitions. Word has length 94 [2021-08-21 11:44:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:38,720 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 5501 transitions. [2021-08-21 11:44:38,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:38,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 5501 transitions. [2021-08-21 11:44:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:38,726 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:38,726 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:38,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 11:44:38,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash -366766861, now seen corresponding path program 2 times [2021-08-21 11:44:38,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:38,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527577774] [2021-08-21 11:44:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:38,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:39,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:39,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527577774] [2021-08-21 11:44:39,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527577774] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:39,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:39,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:39,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308196253] [2021-08-21 11:44:39,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:39,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:39,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:39,423 INFO L87 Difference]: Start difference. First operand 2118 states and 5501 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:40,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:40,820 INFO L93 Difference]: Finished difference Result 2429 states and 6100 transitions. [2021-08-21 11:44:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:44:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:40,832 INFO L225 Difference]: With dead ends: 2429 [2021-08-21 11:44:40,832 INFO L226 Difference]: Without dead ends: 2429 [2021-08-21 11:44:40,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1124.4ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:44:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-08-21 11:44:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2145. [2021-08-21 11:44:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 2143 states have (on average 2.59636024265049) internal successors, (5564), 2144 states have internal predecessors, (5564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 5564 transitions. [2021-08-21 11:44:40,890 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 5564 transitions. Word has length 94 [2021-08-21 11:44:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:40,890 INFO L470 AbstractCegarLoop]: Abstraction has 2145 states and 5564 transitions. [2021-08-21 11:44:40,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 5564 transitions. [2021-08-21 11:44:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:40,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:40,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:40,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 11:44:40,897 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1852258165, now seen corresponding path program 3 times [2021-08-21 11:44:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:40,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223621844] [2021-08-21 11:44:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:40,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:41,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:41,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:41,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223621844] [2021-08-21 11:44:41,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223621844] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:41,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:41,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:41,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288391661] [2021-08-21 11:44:41,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:41,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:41,527 INFO L87 Difference]: Start difference. First operand 2145 states and 5564 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:42,892 INFO L93 Difference]: Finished difference Result 2567 states and 6414 transitions. [2021-08-21 11:44:42,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:44:42,892 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:42,901 INFO L225 Difference]: With dead ends: 2567 [2021-08-21 11:44:42,901 INFO L226 Difference]: Without dead ends: 2567 [2021-08-21 11:44:42,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1146.4ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:44:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2021-08-21 11:44:42,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2172. [2021-08-21 11:44:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 2170 states have (on average 2.5930875576036865) internal successors, (5627), 2171 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:42,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 5627 transitions. [2021-08-21 11:44:42,950 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 5627 transitions. Word has length 94 [2021-08-21 11:44:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:42,950 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 5627 transitions. [2021-08-21 11:44:42,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 5627 transitions. [2021-08-21 11:44:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:42,956 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:42,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:42,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 11:44:42,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1749126771, now seen corresponding path program 4 times [2021-08-21 11:44:42,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:42,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485167081] [2021-08-21 11:44:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:42,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:43,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:43,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485167081] [2021-08-21 11:44:43,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485167081] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:43,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:43,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:43,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27493280] [2021-08-21 11:44:43,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:43,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:43,637 INFO L87 Difference]: Start difference. First operand 2172 states and 5627 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:45,009 INFO L93 Difference]: Finished difference Result 2648 states and 6603 transitions. [2021-08-21 11:44:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:44:45,010 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:45,016 INFO L225 Difference]: With dead ends: 2648 [2021-08-21 11:44:45,017 INFO L226 Difference]: Without dead ends: 2648 [2021-08-21 11:44:45,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1138.3ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:44:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-08-21 11:44:45,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2226. [2021-08-21 11:44:45,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2224 states have (on average 2.5867805755395685) internal successors, (5753), 2225 states have internal predecessors, (5753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 5753 transitions. [2021-08-21 11:44:45,081 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 5753 transitions. Word has length 94 [2021-08-21 11:44:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:45,081 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 5753 transitions. [2021-08-21 11:44:45,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:45,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 5753 transitions. [2021-08-21 11:44:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:45,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:45,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:45,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 11:44:45,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:45,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:45,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1256617997, now seen corresponding path program 5 times [2021-08-21 11:44:45,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:45,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983495545] [2021-08-21 11:44:45,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:45,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:45,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:45,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:45,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983495545] [2021-08-21 11:44:45,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983495545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:45,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:45,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:45,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567458988] [2021-08-21 11:44:45,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:45,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:45,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:45,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:45,711 INFO L87 Difference]: Start difference. First operand 2226 states and 5753 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:46,946 INFO L93 Difference]: Finished difference Result 2729 states and 6792 transitions. [2021-08-21 11:44:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:44:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:46,950 INFO L225 Difference]: With dead ends: 2729 [2021-08-21 11:44:46,951 INFO L226 Difference]: Without dead ends: 2729 [2021-08-21 11:44:46,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1054.0ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:44:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-08-21 11:44:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2253. [2021-08-21 11:44:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 2251 states have (on average 2.5837405597512215) internal successors, (5816), 2252 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 5816 transitions. [2021-08-21 11:44:47,000 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 5816 transitions. Word has length 94 [2021-08-21 11:44:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:47,000 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 5816 transitions. [2021-08-21 11:44:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 5816 transitions. [2021-08-21 11:44:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:47,005 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:47,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:47,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 11:44:47,006 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:47,006 INFO L82 PathProgramCache]: Analyzing trace with hash 172938635, now seen corresponding path program 6 times [2021-08-21 11:44:47,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:47,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326791819] [2021-08-21 11:44:47,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:47,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:47,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:47,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326791819] [2021-08-21 11:44:47,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326791819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:47,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:47,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:44:47,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840495299] [2021-08-21 11:44:47,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:44:47,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:44:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:44:47,617 INFO L87 Difference]: Start difference. First operand 2253 states and 5816 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:48,758 INFO L93 Difference]: Finished difference Result 2466 states and 6232 transitions. [2021-08-21 11:44:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-21 11:44:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:48,763 INFO L225 Difference]: With dead ends: 2466 [2021-08-21 11:44:48,763 INFO L226 Difference]: Without dead ends: 2466 [2021-08-21 11:44:48,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 962.9ms TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:44:48,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2021-08-21 11:44:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2118. [2021-08-21 11:44:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 2116 states have (on average 2.5997164461247637) internal successors, (5501), 2117 states have internal predecessors, (5501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 5501 transitions. [2021-08-21 11:44:48,819 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 5501 transitions. Word has length 94 [2021-08-21 11:44:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:48,820 INFO L470 AbstractCegarLoop]: Abstraction has 2118 states and 5501 transitions. [2021-08-21 11:44:48,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 5501 transitions. [2021-08-21 11:44:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:48,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:48,826 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] [2021-08-21 11:44:48,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 11:44:48,826 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:48,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1553665449, now seen corresponding path program 7 times [2021-08-21 11:44:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:48,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120265920] [2021-08-21 11:44:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:48,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:49,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:49,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120265920] [2021-08-21 11:44:49,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120265920] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:49,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:49,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:44:49,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195091494] [2021-08-21 11:44:49,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:44:49,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:44:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:44:49,812 INFO L87 Difference]: Start difference. First operand 2118 states and 5501 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:44:55,675 INFO L93 Difference]: Finished difference Result 4468 states and 11265 transitions. [2021-08-21 11:44:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 11:44:55,676 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:44:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:44:55,685 INFO L225 Difference]: With dead ends: 4468 [2021-08-21 11:44:55,685 INFO L226 Difference]: Without dead ends: 4468 [2021-08-21 11:44:55,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 5032.1ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 11:44:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2021-08-21 11:44:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 2714. [2021-08-21 11:44:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2712 states have (on average 2.661504424778761) internal successors, (7218), 2713 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 7218 transitions. [2021-08-21 11:44:55,758 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 7218 transitions. Word has length 94 [2021-08-21 11:44:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:44:55,759 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 7218 transitions. [2021-08-21 11:44:55,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:44:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 7218 transitions. [2021-08-21 11:44:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:44:55,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:44:55,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:44:55,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 11:44:55,766 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:44:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:44:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash 79197399, now seen corresponding path program 8 times [2021-08-21 11:44:55,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:44:55,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176046203] [2021-08-21 11:44:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:44:55,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:44:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:44:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:44:56,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:44:56,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176046203] [2021-08-21 11:44:56,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176046203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:44:56,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:44:56,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:44:56,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131744168] [2021-08-21 11:44:56,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:44:56,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:44:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:44:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:44:56,744 INFO L87 Difference]: Start difference. First operand 2714 states and 7218 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:02,892 INFO L93 Difference]: Finished difference Result 4339 states and 10938 transitions. [2021-08-21 11:45:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 11:45:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:02,902 INFO L225 Difference]: With dead ends: 4339 [2021-08-21 11:45:02,902 INFO L226 Difference]: Without dead ends: 4339 [2021-08-21 11:45:02,904 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 5234.2ms TimeCoverageRelationStatistics Valid=994, Invalid=2546, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 11:45:02,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-08-21 11:45:02,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 2692. [2021-08-21 11:45:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2690 states have (on average 2.658364312267658) internal successors, (7151), 2691 states have internal predecessors, (7151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:02,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 7151 transitions. [2021-08-21 11:45:02,976 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 7151 transitions. Word has length 94 [2021-08-21 11:45:02,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:02,977 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 7151 transitions. [2021-08-21 11:45:02,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:02,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 7151 transitions. [2021-08-21 11:45:02,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:02,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:02,984 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:02,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 11:45:02,984 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:02,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1150777919, now seen corresponding path program 9 times [2021-08-21 11:45:02,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:02,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865215325] [2021-08-21 11:45:02,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:02,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:03,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:03,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865215325] [2021-08-21 11:45:03,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865215325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:03,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:03,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:03,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423278287] [2021-08-21 11:45:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:03,904 INFO L87 Difference]: Start difference. First operand 2692 states and 7151 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:09,729 INFO L93 Difference]: Finished difference Result 4913 states and 12279 transitions. [2021-08-21 11:45:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 11:45:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:09,741 INFO L225 Difference]: With dead ends: 4913 [2021-08-21 11:45:09,741 INFO L226 Difference]: Without dead ends: 4913 [2021-08-21 11:45:09,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 5011.7ms TimeCoverageRelationStatistics Valid=975, Invalid=2565, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 11:45:09,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4913 states. [2021-08-21 11:45:09,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4913 to 2670. [2021-08-21 11:45:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2668 states have (on average 2.6551724137931036) internal successors, (7084), 2669 states have internal predecessors, (7084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 7084 transitions. [2021-08-21 11:45:09,818 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 7084 transitions. Word has length 94 [2021-08-21 11:45:09,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:09,818 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 7084 transitions. [2021-08-21 11:45:09,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:09,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 7084 transitions. [2021-08-21 11:45:09,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:09,825 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:09,825 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] [2021-08-21 11:45:09,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 11:45:09,825 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1726352215, now seen corresponding path program 10 times [2021-08-21 11:45:09,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:09,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480451737] [2021-08-21 11:45:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:09,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:10,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:10,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480451737] [2021-08-21 11:45:10,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480451737] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:10,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:10,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:10,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343864538] [2021-08-21 11:45:10,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:10,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:10,765 INFO L87 Difference]: Start difference. First operand 2670 states and 7084 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:16,172 INFO L93 Difference]: Finished difference Result 4987 states and 12446 transitions. [2021-08-21 11:45:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 11:45:16,173 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:16,182 INFO L225 Difference]: With dead ends: 4987 [2021-08-21 11:45:16,183 INFO L226 Difference]: Without dead ends: 4987 [2021-08-21 11:45:16,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 4567.5ms TimeCoverageRelationStatistics Valid=925, Invalid=2497, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 11:45:16,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-08-21 11:45:16,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 2626. [2021-08-21 11:45:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2624 states have (on average 2.6486280487804876) internal successors, (6950), 2625 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 6950 transitions. [2021-08-21 11:45:16,291 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 6950 transitions. Word has length 94 [2021-08-21 11:45:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 2626 states and 6950 transitions. [2021-08-21 11:45:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 6950 transitions. [2021-08-21 11:45:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:16,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:16,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:16,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 11:45:16,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:16,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:16,300 INFO L82 PathProgramCache]: Analyzing trace with hash -937844265, now seen corresponding path program 11 times [2021-08-21 11:45:16,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:16,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651299128] [2021-08-21 11:45:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:16,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:17,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:17,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651299128] [2021-08-21 11:45:17,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651299128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:17,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:17,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:17,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349611954] [2021-08-21 11:45:17,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:17,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:17,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:17,233 INFO L87 Difference]: Start difference. First operand 2626 states and 6950 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:22,023 INFO L93 Difference]: Finished difference Result 5072 states and 12636 transitions. [2021-08-21 11:45:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:45:22,024 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:22,030 INFO L225 Difference]: With dead ends: 5072 [2021-08-21 11:45:22,030 INFO L226 Difference]: Without dead ends: 5072 [2021-08-21 11:45:22,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4234.8ms TimeCoverageRelationStatistics Valid=877, Invalid=2429, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:45:22,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2021-08-21 11:45:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 2604. [2021-08-21 11:45:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2602 states have (on average 2.645272867025365) internal successors, (6883), 2603 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 6883 transitions. [2021-08-21 11:45:22,102 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 6883 transitions. Word has length 94 [2021-08-21 11:45:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:22,102 INFO L470 AbstractCegarLoop]: Abstraction has 2604 states and 6883 transitions. [2021-08-21 11:45:22,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 6883 transitions. [2021-08-21 11:45:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:22,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:22,110 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] [2021-08-21 11:45:22,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 11:45:22,110 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:22,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:22,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1911927489, now seen corresponding path program 12 times [2021-08-21 11:45:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:22,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220274798] [2021-08-21 11:45:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:22,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:22,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:23,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:23,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220274798] [2021-08-21 11:45:23,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220274798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:23,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:23,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667984304] [2021-08-21 11:45:23,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:23,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:23,155 INFO L87 Difference]: Start difference. First operand 2604 states and 6883 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:27,498 INFO L93 Difference]: Finished difference Result 4740 states and 11933 transitions. [2021-08-21 11:45:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:45:27,498 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:27,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:27,504 INFO L225 Difference]: With dead ends: 4740 [2021-08-21 11:45:27,504 INFO L226 Difference]: Without dead ends: 4740 [2021-08-21 11:45:27,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 3859.6ms TimeCoverageRelationStatistics Valid=831, Invalid=2361, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 11:45:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4740 states. [2021-08-21 11:45:27,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4740 to 2580. [2021-08-21 11:45:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2578 states have (on average 2.642358417377812) internal successors, (6812), 2579 states have internal predecessors, (6812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 6812 transitions. [2021-08-21 11:45:27,558 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 6812 transitions. Word has length 94 [2021-08-21 11:45:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:27,558 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 6812 transitions. [2021-08-21 11:45:27,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 6812 transitions. [2021-08-21 11:45:27,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:27,564 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:27,564 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:27,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 11:45:27,565 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:27,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:27,565 INFO L82 PathProgramCache]: Analyzing trace with hash 309173451, now seen corresponding path program 13 times [2021-08-21 11:45:27,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:27,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758959298] [2021-08-21 11:45:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:27,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:28,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:28,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758959298] [2021-08-21 11:45:28,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758959298] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:28,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:28,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:45:28,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840861241] [2021-08-21 11:45:28,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:45:28,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:45:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:45:28,040 INFO L87 Difference]: Start difference. First operand 2580 states and 6812 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:29,169 INFO L93 Difference]: Finished difference Result 3189 states and 8020 transitions. [2021-08-21 11:45:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:45:29,170 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:29,174 INFO L225 Difference]: With dead ends: 3189 [2021-08-21 11:45:29,174 INFO L226 Difference]: Without dead ends: 3189 [2021-08-21 11:45:29,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 986.7ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:45:29,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3189 states. [2021-08-21 11:45:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3189 to 2618. [2021-08-21 11:45:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2616 states have (on average 2.639525993883792) internal successors, (6905), 2617 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 6905 transitions. [2021-08-21 11:45:29,228 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 6905 transitions. Word has length 94 [2021-08-21 11:45:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:29,228 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 6905 transitions. [2021-08-21 11:45:29,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 6905 transitions. [2021-08-21 11:45:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:29,233 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:29,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:29,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 11:45:29,234 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:29,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1142618581, now seen corresponding path program 14 times [2021-08-21 11:45:29,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:29,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906434755] [2021-08-21 11:45:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:29,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:29,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:29,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906434755] [2021-08-21 11:45:29,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906434755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:29,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:29,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:45:29,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089583667] [2021-08-21 11:45:29,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:45:29,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:29,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:45:29,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:45:29,707 INFO L87 Difference]: Start difference. First operand 2618 states and 6905 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:30,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:30,984 INFO L93 Difference]: Finished difference Result 3865 states and 9846 transitions. [2021-08-21 11:45:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:45:30,985 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:30,990 INFO L225 Difference]: With dead ends: 3865 [2021-08-21 11:45:30,990 INFO L226 Difference]: Without dead ends: 3865 [2021-08-21 11:45:30,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 997.7ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:45:30,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-08-21 11:45:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 2582. [2021-08-21 11:45:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 2580 states have (on average 2.6391472868217054) internal successors, (6809), 2581 states have internal predecessors, (6809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:31,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 6809 transitions. [2021-08-21 11:45:31,051 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 6809 transitions. Word has length 94 [2021-08-21 11:45:31,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:31,051 INFO L470 AbstractCegarLoop]: Abstraction has 2582 states and 6809 transitions. [2021-08-21 11:45:31,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:31,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 6809 transitions. [2021-08-21 11:45:31,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:31,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:31,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:31,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 11:45:31,058 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:31,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:31,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1289472845, now seen corresponding path program 15 times [2021-08-21 11:45:31,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:31,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069868189] [2021-08-21 11:45:31,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:31,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:31,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:31,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069868189] [2021-08-21 11:45:31,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069868189] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:31,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:31,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:31,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094093862] [2021-08-21 11:45:31,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:31,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:31,886 INFO L87 Difference]: Start difference. First operand 2582 states and 6809 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:35,577 INFO L93 Difference]: Finished difference Result 4468 states and 11410 transitions. [2021-08-21 11:45:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:45:35,578 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:35,585 INFO L225 Difference]: With dead ends: 4468 [2021-08-21 11:45:35,585 INFO L226 Difference]: Without dead ends: 4468 [2021-08-21 11:45:35,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3353.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:45:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4468 states. [2021-08-21 11:45:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4468 to 2684. [2021-08-21 11:45:35,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2682 states have (on average 2.651752423564504) internal successors, (7112), 2683 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 7112 transitions. [2021-08-21 11:45:35,654 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 7112 transitions. Word has length 94 [2021-08-21 11:45:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:35,654 INFO L470 AbstractCegarLoop]: Abstraction has 2684 states and 7112 transitions. [2021-08-21 11:45:35,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 7112 transitions. [2021-08-21 11:45:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:35,660 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:35,660 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] [2021-08-21 11:45:35,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 11:45:35,661 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1247402499, now seen corresponding path program 16 times [2021-08-21 11:45:35,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:35,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128749819] [2021-08-21 11:45:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:35,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:36,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:36,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128749819] [2021-08-21 11:45:36,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128749819] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:36,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:36,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:36,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947261948] [2021-08-21 11:45:36,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:36,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:36,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:36,519 INFO L87 Difference]: Start difference. First operand 2684 states and 7112 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:40,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:40,080 INFO L93 Difference]: Finished difference Result 5124 states and 13164 transitions. [2021-08-21 11:45:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:45:40,081 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:40,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:40,087 INFO L225 Difference]: With dead ends: 5124 [2021-08-21 11:45:40,087 INFO L226 Difference]: Without dead ends: 5124 [2021-08-21 11:45:40,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3209.7ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:45:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2021-08-21 11:45:40,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 2684. [2021-08-21 11:45:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2682 states have (on average 2.651752423564504) internal successors, (7112), 2683 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 7112 transitions. [2021-08-21 11:45:40,159 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 7112 transitions. Word has length 94 [2021-08-21 11:45:40,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:40,159 INFO L470 AbstractCegarLoop]: Abstraction has 2684 states and 7112 transitions. [2021-08-21 11:45:40,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 7112 transitions. [2021-08-21 11:45:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:40,165 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:40,165 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] [2021-08-21 11:45:40,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 11:45:40,165 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:40,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1599915621, now seen corresponding path program 17 times [2021-08-21 11:45:40,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:40,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448386567] [2021-08-21 11:45:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:40,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:41,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:41,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448386567] [2021-08-21 11:45:41,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448386567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:41,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:41,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:41,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674319489] [2021-08-21 11:45:41,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:41,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:41,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:41,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:41,021 INFO L87 Difference]: Start difference. First operand 2684 states and 7112 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:44,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:44,514 INFO L93 Difference]: Finished difference Result 4702 states and 11894 transitions. [2021-08-21 11:45:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:45:44,514 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:44,520 INFO L225 Difference]: With dead ends: 4702 [2021-08-21 11:45:44,520 INFO L226 Difference]: Without dead ends: 4702 [2021-08-21 11:45:44,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3199.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:45:44,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4702 states. [2021-08-21 11:45:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4702 to 2686. [2021-08-21 11:45:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2684 states have (on average 2.651639344262295) internal successors, (7117), 2685 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 7117 transitions. [2021-08-21 11:45:44,571 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 7117 transitions. Word has length 94 [2021-08-21 11:45:44,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:44,572 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 7117 transitions. [2021-08-21 11:45:44,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:44,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 7117 transitions. [2021-08-21 11:45:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:44,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:44,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:44,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 11:45:44,578 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:44,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2123233101, now seen corresponding path program 18 times [2021-08-21 11:45:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:44,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149038442] [2021-08-21 11:45:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:44,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:45,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:45,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149038442] [2021-08-21 11:45:45,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149038442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:45,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:45,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:45,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030689006] [2021-08-21 11:45:45,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:45,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:45,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:45,396 INFO L87 Difference]: Start difference. First operand 2686 states and 7117 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:49,026 INFO L93 Difference]: Finished difference Result 4667 states and 11813 transitions. [2021-08-21 11:45:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:45:49,026 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:49,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:49,032 INFO L225 Difference]: With dead ends: 4667 [2021-08-21 11:45:49,032 INFO L226 Difference]: Without dead ends: 4667 [2021-08-21 11:45:49,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3314.7ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:45:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-08-21 11:45:49,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 2686. [2021-08-21 11:45:49,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2684 states have (on average 2.651639344262295) internal successors, (7117), 2685 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 7117 transitions. [2021-08-21 11:45:49,073 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 7117 transitions. Word has length 94 [2021-08-21 11:45:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:49,074 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 7117 transitions. [2021-08-21 11:45:49,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 7117 transitions. [2021-08-21 11:45:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:49,080 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:49,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:49,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 11:45:49,080 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash -708459547, now seen corresponding path program 19 times [2021-08-21 11:45:49,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:49,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479709093] [2021-08-21 11:45:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:49,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:49,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:49,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479709093] [2021-08-21 11:45:49,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479709093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:49,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:49,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:49,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401239184] [2021-08-21 11:45:49,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:49,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:49,869 INFO L87 Difference]: Start difference. First operand 2686 states and 7117 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:54,855 INFO L93 Difference]: Finished difference Result 6184 states and 15719 transitions. [2021-08-21 11:45:54,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:45:54,855 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:54,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:54,863 INFO L225 Difference]: With dead ends: 6184 [2021-08-21 11:45:54,863 INFO L226 Difference]: Without dead ends: 6184 [2021-08-21 11:45:54,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4441.5ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:45:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6184 states. [2021-08-21 11:45:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6184 to 2698. [2021-08-21 11:45:54,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2696 states have (on average 2.6531899109792283) internal successors, (7153), 2697 states have internal predecessors, (7153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 7153 transitions. [2021-08-21 11:45:54,909 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 7153 transitions. Word has length 94 [2021-08-21 11:45:54,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:54,909 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 7153 transitions. [2021-08-21 11:45:54,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:54,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 7153 transitions. [2021-08-21 11:45:54,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:54,914 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:54,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:54,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 11:45:54,914 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:54,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:54,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1310460355, now seen corresponding path program 20 times [2021-08-21 11:45:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462329983] [2021-08-21 11:45:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:54,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:45:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:45:55,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:45:55,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462329983] [2021-08-21 11:45:55,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462329983] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:45:55,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:45:55,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:45:55,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240109023] [2021-08-21 11:45:55,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:45:55,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:45:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:45:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:45:55,770 INFO L87 Difference]: Start difference. First operand 2698 states and 7153 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:59,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:45:59,653 INFO L93 Difference]: Finished difference Result 5385 states and 13698 transitions. [2021-08-21 11:45:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:45:59,654 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:45:59,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:45:59,661 INFO L225 Difference]: With dead ends: 5385 [2021-08-21 11:45:59,662 INFO L226 Difference]: Without dead ends: 5385 [2021-08-21 11:45:59,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3400.3ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:45:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2021-08-21 11:45:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 2686. [2021-08-21 11:45:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2684 states have (on average 2.651639344262295) internal successors, (7117), 2685 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 7117 transitions. [2021-08-21 11:45:59,720 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 7117 transitions. Word has length 94 [2021-08-21 11:45:59,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:45:59,720 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 7117 transitions. [2021-08-21 11:45:59,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:45:59,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 7117 transitions. [2021-08-21 11:45:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:45:59,724 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:45:59,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:45:59,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 11:45:59,725 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:45:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:45:59,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1270645171, now seen corresponding path program 21 times [2021-08-21 11:45:59,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:45:59,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743256885] [2021-08-21 11:45:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:45:59,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:45:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:00,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:00,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743256885] [2021-08-21 11:46:00,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743256885] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:00,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:00,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:00,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738456411] [2021-08-21 11:46:00,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:00,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:00,544 INFO L87 Difference]: Start difference. First operand 2686 states and 7117 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:03,808 INFO L93 Difference]: Finished difference Result 4777 states and 12068 transitions. [2021-08-21 11:46:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:46:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:03,814 INFO L225 Difference]: With dead ends: 4777 [2021-08-21 11:46:03,815 INFO L226 Difference]: Without dead ends: 4777 [2021-08-21 11:46:03,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2935.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:46:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-08-21 11:46:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 2692. [2021-08-21 11:46:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2690 states have (on average 2.6513011152416355) internal successors, (7132), 2691 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:03,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 7132 transitions. [2021-08-21 11:46:03,859 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 7132 transitions. Word has length 94 [2021-08-21 11:46:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:03,859 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 7132 transitions. [2021-08-21 11:46:03,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:03,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 7132 transitions. [2021-08-21 11:46:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:03,864 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:03,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:03,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 11:46:03,864 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:03,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash -698826597, now seen corresponding path program 22 times [2021-08-21 11:46:03,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:03,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918899843] [2021-08-21 11:46:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:03,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:04,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:04,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918899843] [2021-08-21 11:46:04,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918899843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:04,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:04,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:04,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231720924] [2021-08-21 11:46:04,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:04,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:04,622 INFO L87 Difference]: Start difference. First operand 2692 states and 7132 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:08,087 INFO L93 Difference]: Finished difference Result 4951 states and 12413 transitions. [2021-08-21 11:46:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:46:08,087 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:08,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:08,094 INFO L225 Difference]: With dead ends: 4951 [2021-08-21 11:46:08,094 INFO L226 Difference]: Without dead ends: 4951 [2021-08-21 11:46:08,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3089.2ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:46:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4951 states. [2021-08-21 11:46:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4951 to 2690. [2021-08-21 11:46:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2688 states have (on average 2.6514136904761907) internal successors, (7127), 2689 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 7127 transitions. [2021-08-21 11:46:08,143 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 7127 transitions. Word has length 94 [2021-08-21 11:46:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:08,144 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 7127 transitions. [2021-08-21 11:46:08,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 7127 transitions. [2021-08-21 11:46:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:08,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:08,148 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] [2021-08-21 11:46:08,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-21 11:46:08,148 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:08,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:08,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1259471983, now seen corresponding path program 23 times [2021-08-21 11:46:08,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:08,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327433121] [2021-08-21 11:46:08,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:08,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:08,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:08,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327433121] [2021-08-21 11:46:08,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327433121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:08,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:08,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:08,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506402050] [2021-08-21 11:46:08,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:08,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:08,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:08,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:08,976 INFO L87 Difference]: Start difference. First operand 2690 states and 7127 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:12,727 INFO L93 Difference]: Finished difference Result 4768 states and 12043 transitions. [2021-08-21 11:46:12,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:46:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:12,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:12,733 INFO L225 Difference]: With dead ends: 4768 [2021-08-21 11:46:12,733 INFO L226 Difference]: Without dead ends: 4768 [2021-08-21 11:46:12,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3251.2ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:46:12,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2021-08-21 11:46:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 2690. [2021-08-21 11:46:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2688 states have (on average 2.6514136904761907) internal successors, (7127), 2689 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 7127 transitions. [2021-08-21 11:46:12,766 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 7127 transitions. Word has length 94 [2021-08-21 11:46:12,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:12,766 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 7127 transitions. [2021-08-21 11:46:12,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 7127 transitions. [2021-08-21 11:46:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:12,770 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:12,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:12,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-21 11:46:12,771 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash 142098307, now seen corresponding path program 24 times [2021-08-21 11:46:12,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:12,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549522297] [2021-08-21 11:46:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:12,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:13,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:13,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549522297] [2021-08-21 11:46:13,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549522297] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:13,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215628767] [2021-08-21 11:46:13,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:13,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:13,567 INFO L87 Difference]: Start difference. First operand 2690 states and 7127 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:18,873 INFO L93 Difference]: Finished difference Result 6518 states and 16599 transitions. [2021-08-21 11:46:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:46:18,874 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:18,882 INFO L225 Difference]: With dead ends: 6518 [2021-08-21 11:46:18,882 INFO L226 Difference]: Without dead ends: 6518 [2021-08-21 11:46:18,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4612.2ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:46:18,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2021-08-21 11:46:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 2726. [2021-08-21 11:46:18,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2726 states, 2724 states have (on average 2.656020558002937) internal successors, (7235), 2725 states have internal predecessors, (7235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2726 states to 2726 states and 7235 transitions. [2021-08-21 11:46:18,926 INFO L78 Accepts]: Start accepts. Automaton has 2726 states and 7235 transitions. Word has length 94 [2021-08-21 11:46:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:18,926 INFO L470 AbstractCegarLoop]: Abstraction has 2726 states and 7235 transitions. [2021-08-21 11:46:18,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2726 states and 7235 transitions. [2021-08-21 11:46:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:18,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:18,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:18,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-21 11:46:18,944 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -459902501, now seen corresponding path program 25 times [2021-08-21 11:46:18,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:18,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621609453] [2021-08-21 11:46:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:18,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:19,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:19,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621609453] [2021-08-21 11:46:19,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621609453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:19,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:19,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:19,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768009641] [2021-08-21 11:46:19,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:19,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:19,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:19,777 INFO L87 Difference]: Start difference. First operand 2726 states and 7235 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:24,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:24,963 INFO L93 Difference]: Finished difference Result 6667 states and 16838 transitions. [2021-08-21 11:46:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:46:24,963 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:24,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:24,972 INFO L225 Difference]: With dead ends: 6667 [2021-08-21 11:46:24,972 INFO L226 Difference]: Without dead ends: 6667 [2021-08-21 11:46:24,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4546.8ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:46:24,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2021-08-21 11:46:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 2714. [2021-08-21 11:46:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2712 states have (on average 2.6544985250737465) internal successors, (7199), 2713 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 7199 transitions. [2021-08-21 11:46:25,027 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 7199 transitions. Word has length 94 [2021-08-21 11:46:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:25,028 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 7199 transitions. [2021-08-21 11:46:25,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 7199 transitions. [2021-08-21 11:46:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:25,032 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:25,032 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] [2021-08-21 11:46:25,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-21 11:46:25,033 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:25,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1833320633, now seen corresponding path program 26 times [2021-08-21 11:46:25,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:25,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507530592] [2021-08-21 11:46:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:25,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:25,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:25,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507530592] [2021-08-21 11:46:25,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507530592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:25,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:25,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:25,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297614685] [2021-08-21 11:46:25,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:25,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:25,808 INFO L87 Difference]: Start difference. First operand 2714 states and 7199 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:29,760 INFO L93 Difference]: Finished difference Result 5638 states and 14356 transitions. [2021-08-21 11:46:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:46:29,760 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:29,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:29,766 INFO L225 Difference]: With dead ends: 5638 [2021-08-21 11:46:29,766 INFO L226 Difference]: Without dead ends: 5638 [2021-08-21 11:46:29,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3393.7ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:46:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-08-21 11:46:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 2690. [2021-08-21 11:46:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2688 states have (on average 2.6514136904761907) internal successors, (7127), 2689 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:29,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 7127 transitions. [2021-08-21 11:46:29,808 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 7127 transitions. Word has length 94 [2021-08-21 11:46:29,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:29,808 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 7127 transitions. [2021-08-21 11:46:29,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 7127 transitions. [2021-08-21 11:46:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:29,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:29,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:29,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-21 11:46:29,813 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 647649229, now seen corresponding path program 27 times [2021-08-21 11:46:29,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:29,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933842212] [2021-08-21 11:46:29,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:29,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:30,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:30,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:30,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933842212] [2021-08-21 11:46:30,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933842212] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:30,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:30,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:30,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956568332] [2021-08-21 11:46:30,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:30,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:30,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:30,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:30,569 INFO L87 Difference]: Start difference. First operand 2690 states and 7127 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:33,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:33,733 INFO L93 Difference]: Finished difference Result 4852 states and 12242 transitions. [2021-08-21 11:46:33,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:46:33,733 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:33,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:33,739 INFO L225 Difference]: With dead ends: 4852 [2021-08-21 11:46:33,739 INFO L226 Difference]: Without dead ends: 4852 [2021-08-21 11:46:33,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2802.1ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:46:33,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4852 states. [2021-08-21 11:46:33,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4852 to 2698. [2021-08-21 11:46:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2698 states, 2696 states have (on average 2.6509643916913945) internal successors, (7147), 2697 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2698 states to 2698 states and 7147 transitions. [2021-08-21 11:46:33,781 INFO L78 Accepts]: Start accepts. Automaton has 2698 states and 7147 transitions. Word has length 94 [2021-08-21 11:46:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 2698 states and 7147 transitions. [2021-08-21 11:46:33,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2698 states and 7147 transitions. [2021-08-21 11:46:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:33,784 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:33,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:33,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-21 11:46:33,785 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:33,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:33,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1219467803, now seen corresponding path program 28 times [2021-08-21 11:46:33,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:33,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375033306] [2021-08-21 11:46:33,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:33,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:34,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:34,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375033306] [2021-08-21 11:46:34,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375033306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:34,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:34,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:34,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274168114] [2021-08-21 11:46:34,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:34,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:34,646 INFO L87 Difference]: Start difference. First operand 2698 states and 7147 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:38,080 INFO L93 Difference]: Finished difference Result 5026 states and 12587 transitions. [2021-08-21 11:46:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:46:38,080 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:38,088 INFO L225 Difference]: With dead ends: 5026 [2021-08-21 11:46:38,088 INFO L226 Difference]: Without dead ends: 5026 [2021-08-21 11:46:38,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3063.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:46:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5026 states. [2021-08-21 11:46:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5026 to 2696. [2021-08-21 11:46:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2694 states have (on average 2.6510764662212325) internal successors, (7142), 2695 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 7142 transitions. [2021-08-21 11:46:38,144 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 7142 transitions. Word has length 94 [2021-08-21 11:46:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:38,144 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 7142 transitions. [2021-08-21 11:46:38,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 7142 transitions. [2021-08-21 11:46:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:38,148 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:38,148 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] [2021-08-21 11:46:38,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-21 11:46:38,149 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:38,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:38,149 INFO L82 PathProgramCache]: Analyzing trace with hash 658822417, now seen corresponding path program 29 times [2021-08-21 11:46:38,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:38,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107547777] [2021-08-21 11:46:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:38,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:38,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:38,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107547777] [2021-08-21 11:46:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107547777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:38,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:38,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:38,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811973043] [2021-08-21 11:46:38,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:38,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:38,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:38,979 INFO L87 Difference]: Start difference. First operand 2696 states and 7142 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:42,556 INFO L93 Difference]: Finished difference Result 5077 states and 12701 transitions. [2021-08-21 11:46:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:46:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:42,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:42,563 INFO L225 Difference]: With dead ends: 5077 [2021-08-21 11:46:42,563 INFO L226 Difference]: Without dead ends: 5077 [2021-08-21 11:46:42,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3203.4ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:46:42,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2021-08-21 11:46:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 2692. [2021-08-21 11:46:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2690 states have (on average 2.6513011152416355) internal successors, (7132), 2691 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 7132 transitions. [2021-08-21 11:46:42,611 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 7132 transitions. Word has length 94 [2021-08-21 11:46:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:42,612 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 7132 transitions. [2021-08-21 11:46:42,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 7132 transitions. [2021-08-21 11:46:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:42,615 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:42,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:42,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-21 11:46:42,615 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:42,615 INFO L82 PathProgramCache]: Analyzing trace with hash 136298035, now seen corresponding path program 30 times [2021-08-21 11:46:42,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:42,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003496050] [2021-08-21 11:46:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:42,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:43,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:43,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003496050] [2021-08-21 11:46:43,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003496050] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:43,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:43,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:43,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350065007] [2021-08-21 11:46:43,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:43,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:43,378 INFO L87 Difference]: Start difference. First operand 2692 states and 7132 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:47,197 INFO L93 Difference]: Finished difference Result 4844 states and 12215 transitions. [2021-08-21 11:46:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:46:47,197 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:47,203 INFO L225 Difference]: With dead ends: 4844 [2021-08-21 11:46:47,203 INFO L226 Difference]: Without dead ends: 4844 [2021-08-21 11:46:47,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3319.9ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:46:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2021-08-21 11:46:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 2692. [2021-08-21 11:46:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2690 states have (on average 2.6513011152416355) internal successors, (7132), 2691 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 7132 transitions. [2021-08-21 11:46:47,247 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 7132 transitions. Word has length 94 [2021-08-21 11:46:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:47,247 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 7132 transitions. [2021-08-21 11:46:47,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:47,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 7132 transitions. [2021-08-21 11:46:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:47,250 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:47,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:47,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-21 11:46:47,251 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:47,251 INFO L82 PathProgramCache]: Analyzing trace with hash -261785021, now seen corresponding path program 31 times [2021-08-21 11:46:47,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:47,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912080216] [2021-08-21 11:46:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:47,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:48,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:48,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912080216] [2021-08-21 11:46:48,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912080216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:48,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:48,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:48,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908364681] [2021-08-21 11:46:48,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:48,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:48,020 INFO L87 Difference]: Start difference. First operand 2692 states and 7132 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:46:53,827 INFO L93 Difference]: Finished difference Result 6850 states and 17474 transitions. [2021-08-21 11:46:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:46:53,828 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:46:53,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:46:53,836 INFO L225 Difference]: With dead ends: 6850 [2021-08-21 11:46:53,836 INFO L226 Difference]: Without dead ends: 6850 [2021-08-21 11:46:53,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4945.8ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:46:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6850 states. [2021-08-21 11:46:53,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6850 to 2740. [2021-08-21 11:46:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2740 states, 2738 states have (on average 2.6574141709276846) internal successors, (7276), 2739 states have internal predecessors, (7276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 7276 transitions. [2021-08-21 11:46:53,882 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 7276 transitions. Word has length 94 [2021-08-21 11:46:53,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:46:53,882 INFO L470 AbstractCegarLoop]: Abstraction has 2740 states and 7276 transitions. [2021-08-21 11:46:53,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:46:53,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 7276 transitions. [2021-08-21 11:46:53,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:46:53,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:46:53,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:46:53,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-21 11:46:53,886 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:46:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:46:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -863785829, now seen corresponding path program 32 times [2021-08-21 11:46:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:46:53,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675832250] [2021-08-21 11:46:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:46:53,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:46:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:46:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:46:54,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:46:54,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675832250] [2021-08-21 11:46:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675832250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:46:54,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:46:54,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:46:54,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756598847] [2021-08-21 11:46:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:46:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:46:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:46:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:46:54,747 INFO L87 Difference]: Start difference. First operand 2740 states and 7276 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:00,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:00,322 INFO L93 Difference]: Finished difference Result 6999 states and 17713 transitions. [2021-08-21 11:47:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:47:00,323 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:00,332 INFO L225 Difference]: With dead ends: 6999 [2021-08-21 11:47:00,332 INFO L226 Difference]: Without dead ends: 6999 [2021-08-21 11:47:00,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4834.6ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:47:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-08-21 11:47:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 2728. [2021-08-21 11:47:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2728 states, 2726 states have (on average 2.6559060895084374) internal successors, (7240), 2727 states have internal predecessors, (7240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 7240 transitions. [2021-08-21 11:47:00,386 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 7240 transitions. Word has length 94 [2021-08-21 11:47:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:00,386 INFO L470 AbstractCegarLoop]: Abstraction has 2728 states and 7240 transitions. [2021-08-21 11:47:00,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 7240 transitions. [2021-08-21 11:47:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:00,389 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:00,389 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:00,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-21 11:47:00,390 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:00,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2057763335, now seen corresponding path program 33 times [2021-08-21 11:47:00,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:00,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739317419] [2021-08-21 11:47:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:00,390 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:01,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:01,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739317419] [2021-08-21 11:47:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739317419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:01,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:01,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:01,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347259552] [2021-08-21 11:47:01,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:01,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:01,143 INFO L87 Difference]: Start difference. First operand 2728 states and 7240 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:06,345 INFO L93 Difference]: Finished difference Result 7028 states and 17781 transitions. [2021-08-21 11:47:06,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:47:06,353 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:06,362 INFO L225 Difference]: With dead ends: 7028 [2021-08-21 11:47:06,362 INFO L226 Difference]: Without dead ends: 7028 [2021-08-21 11:47:06,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4531.5ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 11:47:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7028 states. [2021-08-21 11:47:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7028 to 2704. [2021-08-21 11:47:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2704 states, 2702 states have (on average 2.6528497409326426) internal successors, (7168), 2703 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 7168 transitions. [2021-08-21 11:47:06,407 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 7168 transitions. Word has length 94 [2021-08-21 11:47:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:06,407 INFO L470 AbstractCegarLoop]: Abstraction has 2704 states and 7168 transitions. [2021-08-21 11:47:06,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:06,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 7168 transitions. [2021-08-21 11:47:06,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:06,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:06,410 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:06,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-21 11:47:06,410 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:06,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:06,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1576440727, now seen corresponding path program 34 times [2021-08-21 11:47:06,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:06,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927075600] [2021-08-21 11:47:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:06,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:07,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:07,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927075600] [2021-08-21 11:47:07,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927075600] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:07,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:07,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:07,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50820753] [2021-08-21 11:47:07,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:07,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:07,288 INFO L87 Difference]: Start difference. First operand 2704 states and 7168 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:11,193 INFO L93 Difference]: Finished difference Result 5790 states and 14742 transitions. [2021-08-21 11:47:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:47:11,194 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:11,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:11,200 INFO L225 Difference]: With dead ends: 5790 [2021-08-21 11:47:11,200 INFO L226 Difference]: Without dead ends: 5790 [2021-08-21 11:47:11,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3511.9ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:47:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5790 states. [2021-08-21 11:47:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5790 to 2692. [2021-08-21 11:47:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2690 states have (on average 2.6513011152416355) internal successors, (7132), 2691 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 7132 transitions. [2021-08-21 11:47:11,239 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 7132 transitions. Word has length 94 [2021-08-21 11:47:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:11,240 INFO L470 AbstractCegarLoop]: Abstraction has 2692 states and 7132 transitions. [2021-08-21 11:47:11,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 7132 transitions. [2021-08-21 11:47:11,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:11,243 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:11,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:11,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-21 11:47:11,243 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:11,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:11,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1466625179, now seen corresponding path program 35 times [2021-08-21 11:47:11,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:11,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937628881] [2021-08-21 11:47:11,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:11,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:11,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:11,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937628881] [2021-08-21 11:47:11,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937628881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:11,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:11,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:11,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049278775] [2021-08-21 11:47:11,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:11,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:11,992 INFO L87 Difference]: Start difference. First operand 2692 states and 7132 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:15,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:15,137 INFO L93 Difference]: Finished difference Result 4570 states and 11644 transitions. [2021-08-21 11:47:15,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:47:15,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:15,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:15,143 INFO L225 Difference]: With dead ends: 4570 [2021-08-21 11:47:15,143 INFO L226 Difference]: Without dead ends: 4570 [2021-08-21 11:47:15,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2735.3ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:47:15,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2021-08-21 11:47:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 2702. [2021-08-21 11:47:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2700 states have (on average 2.6507407407407406) internal successors, (7157), 2701 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 7157 transitions. [2021-08-21 11:47:15,187 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 7157 transitions. Word has length 94 [2021-08-21 11:47:15,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:15,187 INFO L470 AbstractCegarLoop]: Abstraction has 2702 states and 7157 transitions. [2021-08-21 11:47:15,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 7157 transitions. [2021-08-21 11:47:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:15,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:15,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:15,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-21 11:47:15,192 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:15,192 INFO L82 PathProgramCache]: Analyzing trace with hash -894806605, now seen corresponding path program 36 times [2021-08-21 11:47:15,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:15,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081023764] [2021-08-21 11:47:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:15,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:15,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:15,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081023764] [2021-08-21 11:47:15,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081023764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:15,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:15,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:15,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907406835] [2021-08-21 11:47:15,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:15,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:15,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:15,964 INFO L87 Difference]: Start difference. First operand 2702 states and 7157 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:19,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:19,357 INFO L93 Difference]: Finished difference Result 4744 states and 11989 transitions. [2021-08-21 11:47:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:47:19,358 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:19,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:19,364 INFO L225 Difference]: With dead ends: 4744 [2021-08-21 11:47:19,365 INFO L226 Difference]: Without dead ends: 4744 [2021-08-21 11:47:19,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2970.3ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:47:19,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4744 states. [2021-08-21 11:47:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4744 to 2700. [2021-08-21 11:47:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2698 states have (on average 2.6508524833209783) internal successors, (7152), 2699 states have internal predecessors, (7152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:19,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 7152 transitions. [2021-08-21 11:47:19,410 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 7152 transitions. Word has length 94 [2021-08-21 11:47:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:19,410 INFO L470 AbstractCegarLoop]: Abstraction has 2700 states and 7152 transitions. [2021-08-21 11:47:19,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 7152 transitions. [2021-08-21 11:47:19,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:19,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:19,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:19,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-21 11:47:19,414 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:19,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:19,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1455451991, now seen corresponding path program 37 times [2021-08-21 11:47:19,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:19,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210788448] [2021-08-21 11:47:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:19,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:20,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:20,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210788448] [2021-08-21 11:47:20,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210788448] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:20,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:20,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:20,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994703062] [2021-08-21 11:47:20,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:20,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:20,251 INFO L87 Difference]: Start difference. First operand 2700 states and 7152 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:23,841 INFO L93 Difference]: Finished difference Result 4795 states and 12103 transitions. [2021-08-21 11:47:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:47:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:23,847 INFO L225 Difference]: With dead ends: 4795 [2021-08-21 11:47:23,847 INFO L226 Difference]: Without dead ends: 4795 [2021-08-21 11:47:23,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3139.7ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:47:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2021-08-21 11:47:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 2696. [2021-08-21 11:47:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2694 states have (on average 2.6510764662212325) internal successors, (7142), 2695 states have internal predecessors, (7142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 7142 transitions. [2021-08-21 11:47:23,886 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 7142 transitions. Word has length 94 [2021-08-21 11:47:23,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:23,886 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 7142 transitions. [2021-08-21 11:47:23,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:23,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 7142 transitions. [2021-08-21 11:47:23,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:23,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:23,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:23,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-21 11:47:23,891 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:23,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:23,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1977976373, now seen corresponding path program 38 times [2021-08-21 11:47:23,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:23,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383761736] [2021-08-21 11:47:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:23,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:24,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:24,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383761736] [2021-08-21 11:47:24,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383761736] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:24,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:24,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:24,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410201638] [2021-08-21 11:47:24,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:24,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:24,636 INFO L87 Difference]: Start difference. First operand 2696 states and 7142 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:28,363 INFO L93 Difference]: Finished difference Result 4846 states and 12217 transitions. [2021-08-21 11:47:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:47:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:28,372 INFO L225 Difference]: With dead ends: 4846 [2021-08-21 11:47:28,372 INFO L226 Difference]: Without dead ends: 4846 [2021-08-21 11:47:28,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3211.0ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:47:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4846 states. [2021-08-21 11:47:28,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4846 to 2694. [2021-08-21 11:47:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2692 states have (on average 2.651188707280832) internal successors, (7137), 2693 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 7137 transitions. [2021-08-21 11:47:28,430 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 7137 transitions. Word has length 94 [2021-08-21 11:47:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:28,430 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 7137 transitions. [2021-08-21 11:47:28,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 7137 transitions. [2021-08-21 11:47:28,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:28,435 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:28,435 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] [2021-08-21 11:47:28,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-21 11:47:28,436 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:28,436 INFO L82 PathProgramCache]: Analyzing trace with hash 715631, now seen corresponding path program 39 times [2021-08-21 11:47:28,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:28,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459223196] [2021-08-21 11:47:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:28,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:29,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:29,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459223196] [2021-08-21 11:47:29,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459223196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:29,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:29,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:29,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993887699] [2021-08-21 11:47:29,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:29,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:29,203 INFO L87 Difference]: Start difference. First operand 2694 states and 7137 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:33,108 INFO L93 Difference]: Finished difference Result 4571 states and 11635 transitions. [2021-08-21 11:47:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:47:33,109 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:33,114 INFO L225 Difference]: With dead ends: 4571 [2021-08-21 11:47:33,114 INFO L226 Difference]: Without dead ends: 4571 [2021-08-21 11:47:33,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3345.7ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:47:33,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2021-08-21 11:47:33,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 2694. [2021-08-21 11:47:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2692 states have (on average 2.651188707280832) internal successors, (7137), 2693 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 7137 transitions. [2021-08-21 11:47:33,152 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 7137 transitions. Word has length 94 [2021-08-21 11:47:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:33,152 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 7137 transitions. [2021-08-21 11:47:33,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 7137 transitions. [2021-08-21 11:47:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:33,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:33,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:33,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-21 11:47:33,155 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 363613797, now seen corresponding path program 40 times [2021-08-21 11:47:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:33,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405246052] [2021-08-21 11:47:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:33,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:33,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:33,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405246052] [2021-08-21 11:47:33,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405246052] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:33,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:33,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:33,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977107696] [2021-08-21 11:47:33,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:33,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:33,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:33,931 INFO L87 Difference]: Start difference. First operand 2694 states and 7137 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:39,780 INFO L93 Difference]: Finished difference Result 6284 states and 16024 transitions. [2021-08-21 11:47:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:47:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:39,788 INFO L225 Difference]: With dead ends: 6284 [2021-08-21 11:47:39,789 INFO L226 Difference]: Without dead ends: 6284 [2021-08-21 11:47:39,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5133.1ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:47:39,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-08-21 11:47:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 2754. [2021-08-21 11:47:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2752 states have (on average 2.6587936046511627) internal successors, (7317), 2753 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 7317 transitions. [2021-08-21 11:47:39,835 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 7317 transitions. Word has length 94 [2021-08-21 11:47:39,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:39,835 INFO L470 AbstractCegarLoop]: Abstraction has 2754 states and 7317 transitions. [2021-08-21 11:47:39,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 7317 transitions. [2021-08-21 11:47:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:39,839 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:39,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:39,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-21 11:47:39,839 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:39,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:39,839 INFO L82 PathProgramCache]: Analyzing trace with hash -238387011, now seen corresponding path program 41 times [2021-08-21 11:47:39,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:39,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517510267] [2021-08-21 11:47:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:39,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:40,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:40,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517510267] [2021-08-21 11:47:40,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517510267] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:40,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:40,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:40,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724191114] [2021-08-21 11:47:40,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:40,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:40,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:40,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:40,585 INFO L87 Difference]: Start difference. First operand 2754 states and 7317 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:46,315 INFO L93 Difference]: Finished difference Result 6433 states and 16263 transitions. [2021-08-21 11:47:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:47:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:46,338 INFO L225 Difference]: With dead ends: 6433 [2021-08-21 11:47:46,338 INFO L226 Difference]: Without dead ends: 6433 [2021-08-21 11:47:46,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5000.7ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:47:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6433 states. [2021-08-21 11:47:46,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6433 to 2742. [2021-08-21 11:47:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2740 states have (on average 2.6572992700729925) internal successors, (7281), 2741 states have internal predecessors, (7281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 7281 transitions. [2021-08-21 11:47:46,381 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 7281 transitions. Word has length 94 [2021-08-21 11:47:46,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:46,381 INFO L470 AbstractCegarLoop]: Abstraction has 2742 states and 7281 transitions. [2021-08-21 11:47:46,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 7281 transitions. [2021-08-21 11:47:46,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:46,386 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:46,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:46,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-21 11:47:46,386 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:46,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:46,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1611805143, now seen corresponding path program 42 times [2021-08-21 11:47:46,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:46,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119564186] [2021-08-21 11:47:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:46,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:47,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:47,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119564186] [2021-08-21 11:47:47,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119564186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:47,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:47,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002618308] [2021-08-21 11:47:47,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:47,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:47,116 INFO L87 Difference]: Start difference. First operand 2742 states and 7281 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:52,621 INFO L93 Difference]: Finished difference Result 6462 states and 16331 transitions. [2021-08-21 11:47:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:47:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:52,630 INFO L225 Difference]: With dead ends: 6462 [2021-08-21 11:47:52,630 INFO L226 Difference]: Without dead ends: 6462 [2021-08-21 11:47:52,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4748.8ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 11:47:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2021-08-21 11:47:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 2718. [2021-08-21 11:47:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2716 states have (on average 2.6542709867452134) internal successors, (7209), 2717 states have internal predecessors, (7209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 7209 transitions. [2021-08-21 11:47:52,674 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 7209 transitions. Word has length 94 [2021-08-21 11:47:52,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:52,675 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 7209 transitions. [2021-08-21 11:47:52,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 7209 transitions. [2021-08-21 11:47:52,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:52,678 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:52,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:52,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-21 11:47:52,678 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:52,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:52,678 INFO L82 PathProgramCache]: Analyzing trace with hash -951041909, now seen corresponding path program 43 times [2021-08-21 11:47:52,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:52,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95403397] [2021-08-21 11:47:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:52,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:53,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:53,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95403397] [2021-08-21 11:47:53,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95403397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:53,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:53,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:53,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111892334] [2021-08-21 11:47:53,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:53,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:53,416 INFO L87 Difference]: Start difference. First operand 2718 states and 7209 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:47:58,614 INFO L93 Difference]: Finished difference Result 6502 states and 16422 transitions. [2021-08-21 11:47:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:47:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:47:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:47:58,625 INFO L225 Difference]: With dead ends: 6502 [2021-08-21 11:47:58,625 INFO L226 Difference]: Without dead ends: 6502 [2021-08-21 11:47:58,626 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4400.4ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:47:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-08-21 11:47:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 2706. [2021-08-21 11:47:58,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2704 states have (on average 2.6527366863905324) internal successors, (7173), 2705 states have internal predecessors, (7173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 7173 transitions. [2021-08-21 11:47:58,681 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 7173 transitions. Word has length 94 [2021-08-21 11:47:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:47:58,681 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 7173 transitions. [2021-08-21 11:47:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:47:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 7173 transitions. [2021-08-21 11:47:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:47:58,684 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:47:58,684 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:47:58,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-21 11:47:58,684 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:47:58,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:47:58,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1554578439, now seen corresponding path program 44 times [2021-08-21 11:47:58,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:47:58,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252899442] [2021-08-21 11:47:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:47:58,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:47:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:47:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:47:59,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:47:59,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252899442] [2021-08-21 11:47:59,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252899442] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:47:59,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:47:59,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:47:59,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151647207] [2021-08-21 11:47:59,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:47:59,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:47:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:47:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:47:59,470 INFO L87 Difference]: Start difference. First operand 2706 states and 7173 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:03,496 INFO L93 Difference]: Finished difference Result 5131 states and 13040 transitions. [2021-08-21 11:48:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:48:03,496 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:03,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:03,502 INFO L225 Difference]: With dead ends: 5131 [2021-08-21 11:48:03,502 INFO L226 Difference]: Without dead ends: 5131 [2021-08-21 11:48:03,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3474.7ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:48:03,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2021-08-21 11:48:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 2694. [2021-08-21 11:48:03,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2692 states have (on average 2.651188707280832) internal successors, (7137), 2693 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 7137 transitions. [2021-08-21 11:48:03,539 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 7137 transitions. Word has length 94 [2021-08-21 11:48:03,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:03,540 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 7137 transitions. [2021-08-21 11:48:03,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:03,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 7137 transitions. [2021-08-21 11:48:03,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:03,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:03,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:03,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-21 11:48:03,542 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:03,543 INFO L82 PathProgramCache]: Analyzing trace with hash 749982459, now seen corresponding path program 45 times [2021-08-21 11:48:03,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:03,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755380856] [2021-08-21 11:48:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:03,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:03,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:03,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755380856] [2021-08-21 11:48:03,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755380856] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:03,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:03,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-08-21 11:48:03,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182785675] [2021-08-21 11:48:03,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-21 11:48:03,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-21 11:48:03,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-08-21 11:48:03,980 INFO L87 Difference]: Start difference. First operand 2694 states and 7137 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:05,018 INFO L93 Difference]: Finished difference Result 3325 states and 8398 transitions. [2021-08-21 11:48:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:48:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:05,023 INFO L225 Difference]: With dead ends: 3325 [2021-08-21 11:48:05,023 INFO L226 Difference]: Without dead ends: 3325 [2021-08-21 11:48:05,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 925.8ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-08-21 11:48:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2021-08-21 11:48:05,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 2738. [2021-08-21 11:48:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2738 states, 2736 states have (on average 2.647295321637427) internal successors, (7243), 2737 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2738 states to 2738 states and 7243 transitions. [2021-08-21 11:48:05,060 INFO L78 Accepts]: Start accepts. Automaton has 2738 states and 7243 transitions. Word has length 94 [2021-08-21 11:48:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:05,060 INFO L470 AbstractCegarLoop]: Abstraction has 2738 states and 7243 transitions. [2021-08-21 11:48:05,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2738 states and 7243 transitions. [2021-08-21 11:48:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:05,063 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:05,063 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] [2021-08-21 11:48:05,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-21 11:48:05,063 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:05,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:05,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1125826581, now seen corresponding path program 46 times [2021-08-21 11:48:05,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:05,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941598772] [2021-08-21 11:48:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:05,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:05,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:05,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941598772] [2021-08-21 11:48:05,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941598772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:05,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:05,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:05,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649992210] [2021-08-21 11:48:05,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:05,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:05,805 INFO L87 Difference]: Start difference. First operand 2738 states and 7243 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:09,390 INFO L93 Difference]: Finished difference Result 5859 states and 15044 transitions. [2021-08-21 11:48:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:09,390 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:09,397 INFO L225 Difference]: With dead ends: 5859 [2021-08-21 11:48:09,397 INFO L226 Difference]: Without dead ends: 5859 [2021-08-21 11:48:09,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3154.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5859 states. [2021-08-21 11:48:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5859 to 2966. [2021-08-21 11:48:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6744264507422404) internal successors, (7927), 2965 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7927 transitions. [2021-08-21 11:48:09,450 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7927 transitions. Word has length 94 [2021-08-21 11:48:09,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:09,451 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7927 transitions. [2021-08-21 11:48:09,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:09,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7927 transitions. [2021-08-21 11:48:09,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:09,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:09,456 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] [2021-08-21 11:48:09,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-21 11:48:09,456 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1167896927, now seen corresponding path program 47 times [2021-08-21 11:48:09,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:09,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599415337] [2021-08-21 11:48:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:09,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:10,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:10,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599415337] [2021-08-21 11:48:10,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599415337] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:10,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:10,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:10,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916891829] [2021-08-21 11:48:10,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:10,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:10,191 INFO L87 Difference]: Start difference. First operand 2966 states and 7927 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:13,748 INFO L93 Difference]: Finished difference Result 5672 states and 14704 transitions. [2021-08-21 11:48:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:48:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:13,759 INFO L225 Difference]: With dead ends: 5672 [2021-08-21 11:48:13,759 INFO L226 Difference]: Without dead ends: 5672 [2021-08-21 11:48:13,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3158.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:48:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5672 states. [2021-08-21 11:48:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5672 to 2930. [2021-08-21 11:48:13,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2928 states have (on average 2.6704234972677594) internal successors, (7819), 2929 states have internal predecessors, (7819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 7819 transitions. [2021-08-21 11:48:13,809 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 7819 transitions. Word has length 94 [2021-08-21 11:48:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:13,809 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 7819 transitions. [2021-08-21 11:48:13,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 7819 transitions. [2021-08-21 11:48:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:13,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:13,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:13,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-21 11:48:13,813 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -533548541, now seen corresponding path program 48 times [2021-08-21 11:48:13,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:13,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736965117] [2021-08-21 11:48:13,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:13,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:14,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:14,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:14,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736965117] [2021-08-21 11:48:14,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736965117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:14,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:14,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:14,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904080747] [2021-08-21 11:48:14,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:14,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:14,609 INFO L87 Difference]: Start difference. First operand 2930 states and 7819 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:17,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:17,965 INFO L93 Difference]: Finished difference Result 4974 states and 12817 transitions. [2021-08-21 11:48:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:17,966 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:17,971 INFO L225 Difference]: With dead ends: 4974 [2021-08-21 11:48:17,972 INFO L226 Difference]: Without dead ends: 4974 [2021-08-21 11:48:17,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3019.5ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4974 states. [2021-08-21 11:48:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4974 to 2942. [2021-08-21 11:48:18,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2940 states have (on average 2.669727891156463) internal successors, (7849), 2941 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:18,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 7849 transitions. [2021-08-21 11:48:18,017 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 7849 transitions. Word has length 94 [2021-08-21 11:48:18,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:18,017 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 7849 transitions. [2021-08-21 11:48:18,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:18,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 7849 transitions. [2021-08-21 11:48:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:18,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:18,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:18,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-21 11:48:18,021 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:18,021 INFO L82 PathProgramCache]: Analyzing trace with hash -698667397, now seen corresponding path program 49 times [2021-08-21 11:48:18,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:18,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634770822] [2021-08-21 11:48:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:18,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:18,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:18,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634770822] [2021-08-21 11:48:18,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634770822] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:18,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:18,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:18,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000271504] [2021-08-21 11:48:18,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:18,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:18,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:18,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:18,728 INFO L87 Difference]: Start difference. First operand 2942 states and 7849 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:22,408 INFO L93 Difference]: Finished difference Result 6691 states and 17152 transitions. [2021-08-21 11:48:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:22,408 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:22,416 INFO L225 Difference]: With dead ends: 6691 [2021-08-21 11:48:22,416 INFO L226 Difference]: Without dead ends: 6691 [2021-08-21 11:48:22,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3221.6ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2021-08-21 11:48:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 2990. [2021-08-21 11:48:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2988 states have (on average 2.675033467202142) internal successors, (7993), 2989 states have internal predecessors, (7993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 7993 transitions. [2021-08-21 11:48:22,467 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 7993 transitions. Word has length 94 [2021-08-21 11:48:22,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:22,467 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 7993 transitions. [2021-08-21 11:48:22,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 7993 transitions. [2021-08-21 11:48:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:22,470 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:22,470 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:22,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-21 11:48:22,470 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:22,470 INFO L82 PathProgramCache]: Analyzing trace with hash -740737743, now seen corresponding path program 50 times [2021-08-21 11:48:22,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:22,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578158378] [2021-08-21 11:48:22,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:22,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:23,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:23,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578158378] [2021-08-21 11:48:23,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578158378] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:23,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:23,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:23,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554194048] [2021-08-21 11:48:23,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:23,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:23,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:23,247 INFO L87 Difference]: Start difference. First operand 2990 states and 7993 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:26,864 INFO L93 Difference]: Finished difference Result 7365 states and 18951 transitions. [2021-08-21 11:48:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:48:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:26,874 INFO L225 Difference]: With dead ends: 7365 [2021-08-21 11:48:26,874 INFO L226 Difference]: Without dead ends: 7365 [2021-08-21 11:48:26,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3145.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:48:26,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7365 states. [2021-08-21 11:48:26,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7365 to 2954. [2021-08-21 11:48:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 2.671070460704607) internal successors, (7885), 2953 states have internal predecessors, (7885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 7885 transitions. [2021-08-21 11:48:26,940 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 7885 transitions. Word has length 94 [2021-08-21 11:48:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:26,940 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 7885 transitions. [2021-08-21 11:48:26,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 7885 transitions. [2021-08-21 11:48:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:26,943 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:26,943 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] [2021-08-21 11:48:26,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-21 11:48:26,944 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:26,944 INFO L82 PathProgramCache]: Analyzing trace with hash -388224621, now seen corresponding path program 51 times [2021-08-21 11:48:26,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:26,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678866370] [2021-08-21 11:48:26,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:26,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:27,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:27,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678866370] [2021-08-21 11:48:27,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678866370] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:27,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:27,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:27,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367287377] [2021-08-21 11:48:27,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:27,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:27,785 INFO L87 Difference]: Start difference. First operand 2954 states and 7885 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:31,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:31,306 INFO L93 Difference]: Finished difference Result 6334 states and 16210 transitions. [2021-08-21 11:48:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:31,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:31,315 INFO L225 Difference]: With dead ends: 6334 [2021-08-21 11:48:31,315 INFO L226 Difference]: Without dead ends: 6334 [2021-08-21 11:48:31,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3133.8ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2021-08-21 11:48:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 2956. [2021-08-21 11:48:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2954 states have (on average 2.6709546377792823) internal successors, (7890), 2955 states have internal predecessors, (7890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 7890 transitions. [2021-08-21 11:48:31,364 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 7890 transitions. Word has length 94 [2021-08-21 11:48:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:31,365 INFO L470 AbstractCegarLoop]: Abstraction has 2956 states and 7890 transitions. [2021-08-21 11:48:31,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 7890 transitions. [2021-08-21 11:48:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:31,368 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:31,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:31,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-21 11:48:31,368 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:31,368 INFO L82 PathProgramCache]: Analyzing trace with hash 183593953, now seen corresponding path program 52 times [2021-08-21 11:48:31,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:31,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140851516] [2021-08-21 11:48:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:31,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:32,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:32,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140851516] [2021-08-21 11:48:32,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140851516] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:32,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:32,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:32,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207643215] [2021-08-21 11:48:32,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:32,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:32,204 INFO L87 Difference]: Start difference. First operand 2956 states and 7890 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:36,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:36,253 INFO L93 Difference]: Finished difference Result 6317 states and 16174 transitions. [2021-08-21 11:48:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:48:36,254 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:36,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:36,261 INFO L225 Difference]: With dead ends: 6317 [2021-08-21 11:48:36,261 INFO L226 Difference]: Without dead ends: 6317 [2021-08-21 11:48:36,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3579.9ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:48:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2021-08-21 11:48:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 2954. [2021-08-21 11:48:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 2.671070460704607) internal successors, (7885), 2953 states have internal predecessors, (7885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:36,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 7885 transitions. [2021-08-21 11:48:36,303 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 7885 transitions. Word has length 94 [2021-08-21 11:48:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:36,303 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 7885 transitions. [2021-08-21 11:48:36,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:36,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 7885 transitions. [2021-08-21 11:48:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:36,305 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:36,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:36,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-21 11:48:36,306 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:36,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1598367507, now seen corresponding path program 53 times [2021-08-21 11:48:36,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:36,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886752739] [2021-08-21 11:48:36,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:36,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:37,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:37,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886752739] [2021-08-21 11:48:37,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886752739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:37,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:37,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:37,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508390563] [2021-08-21 11:48:37,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:37,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:37,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:37,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:37,023 INFO L87 Difference]: Start difference. First operand 2954 states and 7885 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:42,060 INFO L93 Difference]: Finished difference Result 6758 states and 17330 transitions. [2021-08-21 11:48:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:48:42,060 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:42,069 INFO L225 Difference]: With dead ends: 6758 [2021-08-21 11:48:42,069 INFO L226 Difference]: Without dead ends: 6758 [2021-08-21 11:48:42,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4469.2ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:48:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6758 states. [2021-08-21 11:48:42,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6758 to 2966. [2021-08-21 11:48:42,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6724021592442644) internal successors, (7921), 2965 states have internal predecessors, (7921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7921 transitions. [2021-08-21 11:48:42,120 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7921 transitions. Word has length 94 [2021-08-21 11:48:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:42,120 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7921 transitions. [2021-08-21 11:48:42,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7921 transitions. [2021-08-21 11:48:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:42,123 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:42,123 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] [2021-08-21 11:48:42,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-21 11:48:42,124 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash 996366699, now seen corresponding path program 54 times [2021-08-21 11:48:42,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:42,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628240830] [2021-08-21 11:48:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:42,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:42,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:42,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628240830] [2021-08-21 11:48:42,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628240830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:42,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:42,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:42,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164687186] [2021-08-21 11:48:42,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:42,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:42,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:42,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:42,901 INFO L87 Difference]: Start difference. First operand 2966 states and 7921 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:46,765 INFO L93 Difference]: Finished difference Result 5959 states and 15309 transitions. [2021-08-21 11:48:46,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:48:46,765 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:46,772 INFO L225 Difference]: With dead ends: 5959 [2021-08-21 11:48:46,772 INFO L226 Difference]: Without dead ends: 5959 [2021-08-21 11:48:46,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3427.7ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:48:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5959 states. [2021-08-21 11:48:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5959 to 2942. [2021-08-21 11:48:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2940 states have (on average 2.669727891156463) internal successors, (7849), 2941 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 7849 transitions. [2021-08-21 11:48:46,833 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 7849 transitions. Word has length 94 [2021-08-21 11:48:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:46,834 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 7849 transitions. [2021-08-21 11:48:46,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 7849 transitions. [2021-08-21 11:48:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:46,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:46,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:46,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-21 11:48:46,838 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 500242923, now seen corresponding path program 55 times [2021-08-21 11:48:46,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:46,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059573046] [2021-08-21 11:48:46,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:46,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:47,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:47,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:47,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059573046] [2021-08-21 11:48:47,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059573046] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:47,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:47,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:47,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610805768] [2021-08-21 11:48:47,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:47,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:47,656 INFO L87 Difference]: Start difference. First operand 2942 states and 7849 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:50,983 INFO L93 Difference]: Finished difference Result 5244 states and 13387 transitions. [2021-08-21 11:48:50,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:50,983 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:50,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:50,989 INFO L225 Difference]: With dead ends: 5244 [2021-08-21 11:48:50,989 INFO L226 Difference]: Without dead ends: 5244 [2021-08-21 11:48:50,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2912.3ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:50,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2021-08-21 11:48:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 2946. [2021-08-21 11:48:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2944 states have (on average 2.669497282608696) internal successors, (7859), 2945 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 7859 transitions. [2021-08-21 11:48:51,042 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 7859 transitions. Word has length 94 [2021-08-21 11:48:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:51,042 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 7859 transitions. [2021-08-21 11:48:51,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 7859 transitions. [2021-08-21 11:48:51,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:51,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:51,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:51,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-21 11:48:51,046 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:51,047 INFO L82 PathProgramCache]: Analyzing trace with hash 441213051, now seen corresponding path program 56 times [2021-08-21 11:48:51,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:51,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975101778] [2021-08-21 11:48:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:51,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:51,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:51,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975101778] [2021-08-21 11:48:51,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975101778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:51,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543865284] [2021-08-21 11:48:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:51,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:51,776 INFO L87 Difference]: Start difference. First operand 2946 states and 7859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:55,040 INFO L93 Difference]: Finished difference Result 5322 states and 13531 transitions. [2021-08-21 11:48:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:48:55,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:55,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:55,053 INFO L225 Difference]: With dead ends: 5322 [2021-08-21 11:48:55,069 INFO L226 Difference]: Without dead ends: 5322 [2021-08-21 11:48:55,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2918.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:48:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2021-08-21 11:48:55,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 2948. [2021-08-21 11:48:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2946 states have (on average 2.6693822131704006) internal successors, (7864), 2947 states have internal predecessors, (7864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:55,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 7864 transitions. [2021-08-21 11:48:55,120 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 7864 transitions. Word has length 94 [2021-08-21 11:48:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:55,120 INFO L470 AbstractCegarLoop]: Abstraction has 2948 states and 7864 transitions. [2021-08-21 11:48:55,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 7864 transitions. [2021-08-21 11:48:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:55,123 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:55,123 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] [2021-08-21 11:48:55,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-21 11:48:55,123 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:55,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1013031625, now seen corresponding path program 57 times [2021-08-21 11:48:55,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:55,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658374060] [2021-08-21 11:48:55,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:55,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:48:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:48:55,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:48:55,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658374060] [2021-08-21 11:48:55,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658374060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:48:55,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:48:55,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:48:55,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332702779] [2021-08-21 11:48:55,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:48:55,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:48:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:48:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:48:55,831 INFO L87 Difference]: Start difference. First operand 2948 states and 7864 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:59,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:48:59,457 INFO L93 Difference]: Finished difference Result 5181 states and 13240 transitions. [2021-08-21 11:48:59,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:48:59,457 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:48:59,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:48:59,462 INFO L225 Difference]: With dead ends: 5181 [2021-08-21 11:48:59,463 INFO L226 Difference]: Without dead ends: 5181 [2021-08-21 11:48:59,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3144.4ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:48:59,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2021-08-21 11:48:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 2946. [2021-08-21 11:48:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2944 states have (on average 2.669497282608696) internal successors, (7859), 2945 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 7859 transitions. [2021-08-21 11:48:59,503 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 7859 transitions. Word has length 94 [2021-08-21 11:48:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:48:59,504 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 7859 transitions. [2021-08-21 11:48:59,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:48:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 7859 transitions. [2021-08-21 11:48:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:48:59,507 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:48:59,507 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:48:59,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-21 11:48:59,507 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:48:59,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:48:59,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2131294375, now seen corresponding path program 58 times [2021-08-21 11:48:59,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:48:59,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850601439] [2021-08-21 11:48:59,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:48:59,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:48:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:00,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:00,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850601439] [2021-08-21 11:49:00,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850601439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:00,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:00,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:00,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412747641] [2021-08-21 11:49:00,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:00,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:00,360 INFO L87 Difference]: Start difference. First operand 2946 states and 7859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:04,085 INFO L93 Difference]: Finished difference Result 7012 states and 18031 transitions. [2021-08-21 11:49:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:49:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:04,094 INFO L225 Difference]: With dead ends: 7012 [2021-08-21 11:49:04,094 INFO L226 Difference]: Without dead ends: 7012 [2021-08-21 11:49:04,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3312.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:49:04,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2021-08-21 11:49:04,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 3018. [2021-08-21 11:49:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3016 states have (on average 2.677387267904509) internal successors, (8075), 3017 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 8075 transitions. [2021-08-21 11:49:04,145 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 8075 transitions. Word has length 94 [2021-08-21 11:49:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:04,146 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 8075 transitions. [2021-08-21 11:49:04,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 8075 transitions. [2021-08-21 11:49:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:04,149 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:04,149 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:04,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-21 11:49:04,149 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:04,149 INFO L82 PathProgramCache]: Analyzing trace with hash 2089224029, now seen corresponding path program 59 times [2021-08-21 11:49:04,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:04,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987813540] [2021-08-21 11:49:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:04,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:04,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:04,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987813540] [2021-08-21 11:49:04,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987813540] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:04,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:04,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:04,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172038562] [2021-08-21 11:49:04,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:04,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:04,865 INFO L87 Difference]: Start difference. First operand 3018 states and 8075 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:08,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:08,560 INFO L93 Difference]: Finished difference Result 7686 states and 19830 transitions. [2021-08-21 11:49:08,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:49:08,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:08,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:08,571 INFO L225 Difference]: With dead ends: 7686 [2021-08-21 11:49:08,571 INFO L226 Difference]: Without dead ends: 7686 [2021-08-21 11:49:08,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3115.1ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:49:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7686 states. [2021-08-21 11:49:08,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7686 to 2982. [2021-08-21 11:49:08,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 2.673489932885906) internal successors, (7967), 2981 states have internal predecessors, (7967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7967 transitions. [2021-08-21 11:49:08,628 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7967 transitions. Word has length 94 [2021-08-21 11:49:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:08,628 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7967 transitions. [2021-08-21 11:49:08,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7967 transitions. [2021-08-21 11:49:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:08,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:08,632 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] [2021-08-21 11:49:08,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-21 11:49:08,632 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:08,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1853230145, now seen corresponding path program 60 times [2021-08-21 11:49:08,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:08,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001434438] [2021-08-21 11:49:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:08,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:09,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:09,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001434438] [2021-08-21 11:49:09,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001434438] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:09,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:09,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:09,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989910504] [2021-08-21 11:49:09,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:09,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:09,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:09,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:09,368 INFO L87 Difference]: Start difference. First operand 2982 states and 7967 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:12,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:12,831 INFO L93 Difference]: Finished difference Result 7348 states and 18824 transitions. [2021-08-21 11:49:12,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:49:12,832 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:12,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:12,840 INFO L225 Difference]: With dead ends: 7348 [2021-08-21 11:49:12,840 INFO L226 Difference]: Without dead ends: 7348 [2021-08-21 11:49:12,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3048.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:49:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7348 states. [2021-08-21 11:49:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7348 to 2984. [2021-08-21 11:49:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2982 states have (on average 2.6733735747820253) internal successors, (7972), 2983 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 7972 transitions. [2021-08-21 11:49:12,895 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 7972 transitions. Word has length 94 [2021-08-21 11:49:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:12,895 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 7972 transitions. [2021-08-21 11:49:12,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 7972 transitions. [2021-08-21 11:49:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:12,898 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:12,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:12,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-21 11:49:12,899 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:12,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1281411571, now seen corresponding path program 61 times [2021-08-21 11:49:12,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:12,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331681900] [2021-08-21 11:49:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:12,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:13,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:13,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331681900] [2021-08-21 11:49:13,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331681900] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:13,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:13,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:13,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758970715] [2021-08-21 11:49:13,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:13,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:13,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:13,614 INFO L87 Difference]: Start difference. First operand 2984 states and 7972 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:17,456 INFO L93 Difference]: Finished difference Result 7331 states and 18788 transitions. [2021-08-21 11:49:17,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:49:17,457 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:17,465 INFO L225 Difference]: With dead ends: 7331 [2021-08-21 11:49:17,465 INFO L226 Difference]: Without dead ends: 7331 [2021-08-21 11:49:17,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3256.3ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:49:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2021-08-21 11:49:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 2982. [2021-08-21 11:49:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 2.673489932885906) internal successors, (7967), 2981 states have internal predecessors, (7967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7967 transitions. [2021-08-21 11:49:17,522 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7967 transitions. Word has length 94 [2021-08-21 11:49:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:17,522 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7967 transitions. [2021-08-21 11:49:17,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7967 transitions. [2021-08-21 11:49:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:17,526 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:17,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:17,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-21 11:49:17,526 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash 133361983, now seen corresponding path program 62 times [2021-08-21 11:49:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:17,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869143510] [2021-08-21 11:49:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:17,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:18,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:18,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869143510] [2021-08-21 11:49:18,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869143510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:18,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:18,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:18,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285970685] [2021-08-21 11:49:18,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:18,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:18,260 INFO L87 Difference]: Start difference. First operand 2982 states and 7967 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:23,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:23,583 INFO L93 Difference]: Finished difference Result 8746 states and 22385 transitions. [2021-08-21 11:49:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:49:23,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:23,595 INFO L225 Difference]: With dead ends: 8746 [2021-08-21 11:49:23,595 INFO L226 Difference]: Without dead ends: 8746 [2021-08-21 11:49:23,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4537.4ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:49:23,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8746 states. [2021-08-21 11:49:23,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8746 to 2994. [2021-08-21 11:49:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.6747994652406417) internal successors, (8003), 2993 states have internal predecessors, (8003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 8003 transitions. [2021-08-21 11:49:23,661 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 8003 transitions. Word has length 94 [2021-08-21 11:49:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:23,661 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 8003 transitions. [2021-08-21 11:49:23,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 8003 transitions. [2021-08-21 11:49:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:23,665 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:23,665 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:23,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-21 11:49:23,665 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:23,665 INFO L82 PathProgramCache]: Analyzing trace with hash -468638825, now seen corresponding path program 63 times [2021-08-21 11:49:23,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:23,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965447594] [2021-08-21 11:49:23,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:23,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:24,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:24,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965447594] [2021-08-21 11:49:24,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965447594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:24,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:24,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:24,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580648381] [2021-08-21 11:49:24,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:24,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:24,412 INFO L87 Difference]: Start difference. First operand 2994 states and 8003 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:28,356 INFO L93 Difference]: Finished difference Result 7947 states and 20364 transitions. [2021-08-21 11:49:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:49:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:28,366 INFO L225 Difference]: With dead ends: 7947 [2021-08-21 11:49:28,366 INFO L226 Difference]: Without dead ends: 7947 [2021-08-21 11:49:28,366 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3404.8ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:49:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2021-08-21 11:49:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 2970. [2021-08-21 11:49:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.672169811320755) internal successors, (7931), 2969 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7931 transitions. [2021-08-21 11:49:28,430 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7931 transitions. Word has length 94 [2021-08-21 11:49:28,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:28,431 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7931 transitions. [2021-08-21 11:49:28,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:28,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7931 transitions. [2021-08-21 11:49:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:28,434 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:28,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:28,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-21 11:49:28,435 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:28,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:28,435 INFO L82 PathProgramCache]: Analyzing trace with hash -428823641, now seen corresponding path program 64 times [2021-08-21 11:49:28,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:28,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074968531] [2021-08-21 11:49:28,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:28,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:29,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:29,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074968531] [2021-08-21 11:49:29,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074968531] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:29,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:29,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:29,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425064112] [2021-08-21 11:49:29,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:29,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:29,192 INFO L87 Difference]: Start difference. First operand 2970 states and 7931 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:32,567 INFO L93 Difference]: Finished difference Result 6651 states and 17058 transitions. [2021-08-21 11:49:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:49:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:32,576 INFO L225 Difference]: With dead ends: 6651 [2021-08-21 11:49:32,576 INFO L226 Difference]: Without dead ends: 6651 [2021-08-21 11:49:32,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2990.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:49:32,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6651 states. [2021-08-21 11:49:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6651 to 2976. [2021-08-21 11:49:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2976 states, 2974 states have (on average 2.67182246133154) internal successors, (7946), 2975 states have internal predecessors, (7946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2976 states to 2976 states and 7946 transitions. [2021-08-21 11:49:32,626 INFO L78 Accepts]: Start accepts. Automaton has 2976 states and 7946 transitions. Word has length 94 [2021-08-21 11:49:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:32,627 INFO L470 AbstractCegarLoop]: Abstraction has 2976 states and 7946 transitions. [2021-08-21 11:49:32,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2976 states and 7946 transitions. [2021-08-21 11:49:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:32,630 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:32,630 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] [2021-08-21 11:49:32,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-21 11:49:32,630 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:32,630 INFO L82 PathProgramCache]: Analyzing trace with hash 142994933, now seen corresponding path program 65 times [2021-08-21 11:49:32,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:32,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521103872] [2021-08-21 11:49:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:32,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:33,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:33,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521103872] [2021-08-21 11:49:33,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521103872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:33,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:33,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:33,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864385263] [2021-08-21 11:49:33,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:33,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:33,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:33,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:33,410 INFO L87 Difference]: Start difference. First operand 2976 states and 7946 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:37,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:37,061 INFO L93 Difference]: Finished difference Result 6825 states and 17403 transitions. [2021-08-21 11:49:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:49:37,061 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:37,070 INFO L225 Difference]: With dead ends: 6825 [2021-08-21 11:49:37,070 INFO L226 Difference]: Without dead ends: 6825 [2021-08-21 11:49:37,070 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3164.5ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:49:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6825 states. [2021-08-21 11:49:37,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6825 to 2974. [2021-08-21 11:49:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2972 states have (on average 2.671938088829071) internal successors, (7941), 2973 states have internal predecessors, (7941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7941 transitions. [2021-08-21 11:49:37,136 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7941 transitions. Word has length 94 [2021-08-21 11:49:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:37,136 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 7941 transitions. [2021-08-21 11:49:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7941 transitions. [2021-08-21 11:49:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:37,140 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:37,140 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:37,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-21 11:49:37,144 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:37,145 INFO L82 PathProgramCache]: Analyzing trace with hash -417650453, now seen corresponding path program 66 times [2021-08-21 11:49:37,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:37,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142936165] [2021-08-21 11:49:37,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:37,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:37,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:37,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142936165] [2021-08-21 11:49:37,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142936165] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:37,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:37,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:37,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703070669] [2021-08-21 11:49:37,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:37,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:37,993 INFO L87 Difference]: Start difference. First operand 2974 states and 7941 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:41,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:41,758 INFO L93 Difference]: Finished difference Result 6666 states and 17093 transitions. [2021-08-21 11:49:41,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:49:41,759 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:41,766 INFO L225 Difference]: With dead ends: 6666 [2021-08-21 11:49:41,767 INFO L226 Difference]: Without dead ends: 6666 [2021-08-21 11:49:41,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3323.8ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:49:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2021-08-21 11:49:41,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 2970. [2021-08-21 11:49:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.672169811320755) internal successors, (7931), 2969 states have internal predecessors, (7931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7931 transitions. [2021-08-21 11:49:41,813 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7931 transitions. Word has length 94 [2021-08-21 11:49:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:41,814 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7931 transitions. [2021-08-21 11:49:41,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7931 transitions. [2021-08-21 11:49:41,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:41,816 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:41,817 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:41,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-21 11:49:41,817 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:41,817 INFO L82 PathProgramCache]: Analyzing trace with hash 983919837, now seen corresponding path program 67 times [2021-08-21 11:49:41,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:41,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045383388] [2021-08-21 11:49:41,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:41,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:42,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:42,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045383388] [2021-08-21 11:49:42,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045383388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:42,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:42,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:42,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703062783] [2021-08-21 11:49:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:42,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:42,538 INFO L87 Difference]: Start difference. First operand 2970 states and 7931 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:47,833 INFO L93 Difference]: Finished difference Result 7124 states and 18302 transitions. [2021-08-21 11:49:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:49:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:47,843 INFO L225 Difference]: With dead ends: 7124 [2021-08-21 11:49:47,843 INFO L226 Difference]: Without dead ends: 7124 [2021-08-21 11:49:47,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4630.2ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:49:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-08-21 11:49:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 3006. [2021-08-21 11:49:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3004 states have (on average 2.676098535286285) internal successors, (8039), 3005 states have internal predecessors, (8039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 8039 transitions. [2021-08-21 11:49:47,898 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 8039 transitions. Word has length 94 [2021-08-21 11:49:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:47,898 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 8039 transitions. [2021-08-21 11:49:47,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 8039 transitions. [2021-08-21 11:49:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:47,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:47,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:47,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-21 11:49:47,902 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:47,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash 381919029, now seen corresponding path program 68 times [2021-08-21 11:49:47,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:47,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731326439] [2021-08-21 11:49:47,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:47,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:48,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:48,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731326439] [2021-08-21 11:49:48,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731326439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:48,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:48,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:48,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728790655] [2021-08-21 11:49:48,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:48,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:48,630 INFO L87 Difference]: Start difference. First operand 3006 states and 8039 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:53,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:53,960 INFO L93 Difference]: Finished difference Result 7273 states and 18541 transitions. [2021-08-21 11:49:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:49:53,960 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:53,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:53,968 INFO L225 Difference]: With dead ends: 7273 [2021-08-21 11:49:53,968 INFO L226 Difference]: Without dead ends: 7273 [2021-08-21 11:49:53,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4679.9ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:49:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7273 states. [2021-08-21 11:49:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7273 to 2994. [2021-08-21 11:49:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.6747994652406417) internal successors, (8003), 2993 states have internal predecessors, (8003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 8003 transitions. [2021-08-21 11:49:54,022 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 8003 transitions. Word has length 94 [2021-08-21 11:49:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:54,022 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 8003 transitions. [2021-08-21 11:49:54,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 8003 transitions. [2021-08-21 11:49:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:54,026 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:54,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:54,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-21 11:49:54,026 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:54,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:54,026 INFO L82 PathProgramCache]: Analyzing trace with hash -991499103, now seen corresponding path program 69 times [2021-08-21 11:49:54,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:54,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134821499] [2021-08-21 11:49:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:54,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:54,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:54,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:54,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134821499] [2021-08-21 11:49:54,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134821499] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:54,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:54,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:54,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605197702] [2021-08-21 11:49:54,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:54,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:54,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:54,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:54,747 INFO L87 Difference]: Start difference. First operand 2994 states and 8003 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:49:58,876 INFO L93 Difference]: Finished difference Result 6244 states and 16059 transitions. [2021-08-21 11:49:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:49:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:49:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:49:58,884 INFO L225 Difference]: With dead ends: 6244 [2021-08-21 11:49:58,884 INFO L226 Difference]: Without dead ends: 6244 [2021-08-21 11:49:58,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3517.6ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:49:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6244 states. [2021-08-21 11:49:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6244 to 2946. [2021-08-21 11:49:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 2944 states have (on average 2.669497282608696) internal successors, (7859), 2945 states have internal predecessors, (7859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 7859 transitions. [2021-08-21 11:49:58,932 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 7859 transitions. Word has length 94 [2021-08-21 11:49:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:49:58,932 INFO L470 AbstractCegarLoop]: Abstraction has 2946 states and 7859 transitions. [2021-08-21 11:49:58,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:49:58,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 7859 transitions. [2021-08-21 11:49:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:49:58,935 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:49:58,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:49:58,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-21 11:49:58,936 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:49:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:49:58,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1707171587, now seen corresponding path program 70 times [2021-08-21 11:49:58,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:49:58,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145147465] [2021-08-21 11:49:58,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:49:58,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:49:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:49:59,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:49:59,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:49:59,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145147465] [2021-08-21 11:49:59,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145147465] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:49:59,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:49:59,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:49:59,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836729871] [2021-08-21 11:49:59,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:49:59,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:49:59,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:49:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:49:59,686 INFO L87 Difference]: Start difference. First operand 2946 states and 7859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:03,131 INFO L93 Difference]: Finished difference Result 5337 states and 13606 transitions. [2021-08-21 11:50:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:03,138 INFO L225 Difference]: With dead ends: 5337 [2021-08-21 11:50:03,138 INFO L226 Difference]: Without dead ends: 5337 [2021-08-21 11:50:03,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2992.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5337 states. [2021-08-21 11:50:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5337 to 2958. [2021-08-21 11:50:03,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2956 states have (on average 2.668809201623816) internal successors, (7889), 2957 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7889 transitions. [2021-08-21 11:50:03,190 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7889 transitions. Word has length 94 [2021-08-21 11:50:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:03,190 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 7889 transitions. [2021-08-21 11:50:03,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7889 transitions. [2021-08-21 11:50:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:03,193 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:03,193 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] [2021-08-21 11:50:03,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-21 11:50:03,194 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1648141715, now seen corresponding path program 71 times [2021-08-21 11:50:03,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:03,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496609770] [2021-08-21 11:50:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:03,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:03,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:03,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496609770] [2021-08-21 11:50:03,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496609770] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:03,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:03,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:03,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929303734] [2021-08-21 11:50:03,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:03,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:03,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:03,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:03,934 INFO L87 Difference]: Start difference. First operand 2958 states and 7889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:07,281 INFO L93 Difference]: Finished difference Result 5654 states and 14247 transitions. [2021-08-21 11:50:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:07,282 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:07,289 INFO L225 Difference]: With dead ends: 5654 [2021-08-21 11:50:07,289 INFO L226 Difference]: Without dead ends: 5654 [2021-08-21 11:50:07,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2897.7ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:07,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2021-08-21 11:50:07,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 2960. [2021-08-21 11:50:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2958 states have (on average 2.6686950642325895) internal successors, (7894), 2959 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 7894 transitions. [2021-08-21 11:50:07,345 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 7894 transitions. Word has length 94 [2021-08-21 11:50:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:07,345 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 7894 transitions. [2021-08-21 11:50:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 7894 transitions. [2021-08-21 11:50:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:07,348 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:07,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:07,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-21 11:50:07,348 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2075007007, now seen corresponding path program 72 times [2021-08-21 11:50:07,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:07,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739224436] [2021-08-21 11:50:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:07,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:08,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:08,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739224436] [2021-08-21 11:50:08,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739224436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:08,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:08,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:08,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722700864] [2021-08-21 11:50:08,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:08,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:08,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:08,076 INFO L87 Difference]: Start difference. First operand 2960 states and 7894 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:11,564 INFO L93 Difference]: Finished difference Result 5513 states and 13956 transitions. [2021-08-21 11:50:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:50:11,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:11,570 INFO L225 Difference]: With dead ends: 5513 [2021-08-21 11:50:11,570 INFO L226 Difference]: Without dead ends: 5513 [2021-08-21 11:50:11,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3010.1ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:50:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2021-08-21 11:50:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 2954. [2021-08-21 11:50:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 2.669037940379404) internal successors, (7879), 2953 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 7879 transitions. [2021-08-21 11:50:11,618 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 7879 transitions. Word has length 94 [2021-08-21 11:50:11,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:11,618 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 7879 transitions. [2021-08-21 11:50:11,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 7879 transitions. [2021-08-21 11:50:11,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:11,621 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:11,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:11,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-21 11:50:11,622 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:11,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:11,622 INFO L82 PathProgramCache]: Analyzing trace with hash -486059585, now seen corresponding path program 73 times [2021-08-21 11:50:11,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:11,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78249929] [2021-08-21 11:50:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:11,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:12,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:12,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78249929] [2021-08-21 11:50:12,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78249929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:12,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436427774] [2021-08-21 11:50:12,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:12,490 INFO L87 Difference]: Start difference. First operand 2954 states and 7879 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:15,768 INFO L93 Difference]: Finished difference Result 5441 states and 13806 transitions. [2021-08-21 11:50:15,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:15,768 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:15,775 INFO L225 Difference]: With dead ends: 5441 [2021-08-21 11:50:15,775 INFO L226 Difference]: Without dead ends: 5441 [2021-08-21 11:50:15,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2857.9ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2021-08-21 11:50:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 2960. [2021-08-21 11:50:15,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2958 states have (on average 2.6686950642325895) internal successors, (7894), 2959 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 7894 transitions. [2021-08-21 11:50:15,825 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 7894 transitions. Word has length 94 [2021-08-21 11:50:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:15,826 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 7894 transitions. [2021-08-21 11:50:15,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 7894 transitions. [2021-08-21 11:50:15,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:15,829 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:15,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:15,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-21 11:50:15,829 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash 85758989, now seen corresponding path program 74 times [2021-08-21 11:50:15,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:15,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117023386] [2021-08-21 11:50:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:15,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:16,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:16,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117023386] [2021-08-21 11:50:16,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117023386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:16,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:16,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:16,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695390168] [2021-08-21 11:50:16,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:16,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:16,577 INFO L87 Difference]: Start difference. First operand 2960 states and 7894 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:20,010 INFO L93 Difference]: Finished difference Result 5615 states and 14151 transitions. [2021-08-21 11:50:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:50:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:20,017 INFO L225 Difference]: With dead ends: 5615 [2021-08-21 11:50:20,017 INFO L226 Difference]: Without dead ends: 5615 [2021-08-21 11:50:20,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2952.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:50:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5615 states. [2021-08-21 11:50:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5615 to 2958. [2021-08-21 11:50:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2956 states have (on average 2.668809201623816) internal successors, (7889), 2957 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7889 transitions. [2021-08-21 11:50:20,067 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7889 transitions. Word has length 94 [2021-08-21 11:50:20,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:20,067 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 7889 transitions. [2021-08-21 11:50:20,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7889 transitions. [2021-08-21 11:50:20,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:20,070 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:20,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:20,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-21 11:50:20,071 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:20,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:20,071 INFO L82 PathProgramCache]: Analyzing trace with hash -474886397, now seen corresponding path program 75 times [2021-08-21 11:50:20,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:20,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265527899] [2021-08-21 11:50:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:20,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:20,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:20,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265527899] [2021-08-21 11:50:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265527899] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:20,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:20,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:20,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950560132] [2021-08-21 11:50:20,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:20,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:20,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:20,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:20,852 INFO L87 Difference]: Start difference. First operand 2958 states and 7889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:24,418 INFO L93 Difference]: Finished difference Result 5298 states and 13510 transitions. [2021-08-21 11:50:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:50:24,418 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:24,424 INFO L225 Difference]: With dead ends: 5298 [2021-08-21 11:50:24,424 INFO L226 Difference]: Without dead ends: 5298 [2021-08-21 11:50:24,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3184.8ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:50:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2021-08-21 11:50:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 2954. [2021-08-21 11:50:24,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 2.669037940379404) internal successors, (7879), 2953 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 7879 transitions. [2021-08-21 11:50:24,471 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 7879 transitions. Word has length 94 [2021-08-21 11:50:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:24,472 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 7879 transitions. [2021-08-21 11:50:24,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 7879 transitions. [2021-08-21 11:50:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:24,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:24,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:24,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-21 11:50:24,476 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:24,476 INFO L82 PathProgramCache]: Analyzing trace with hash 903500421, now seen corresponding path program 76 times [2021-08-21 11:50:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:24,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074605908] [2021-08-21 11:50:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:24,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:25,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:25,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074605908] [2021-08-21 11:50:25,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074605908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:25,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:25,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:25,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542333470] [2021-08-21 11:50:25,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:25,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:25,254 INFO L87 Difference]: Start difference. First operand 2954 states and 7879 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:29,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:29,009 INFO L93 Difference]: Finished difference Result 7345 states and 18940 transitions. [2021-08-21 11:50:29,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:29,010 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:29,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:29,018 INFO L225 Difference]: With dead ends: 7345 [2021-08-21 11:50:29,019 INFO L226 Difference]: Without dead ends: 7345 [2021-08-21 11:50:29,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3227.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:29,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2021-08-21 11:50:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 3038. [2021-08-21 11:50:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3038 states, 3036 states have (on average 2.6781949934123848) internal successors, (8131), 3037 states have internal predecessors, (8131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:29,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 8131 transitions. [2021-08-21 11:50:29,089 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 8131 transitions. Word has length 94 [2021-08-21 11:50:29,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:29,090 INFO L470 AbstractCegarLoop]: Abstraction has 3038 states and 8131 transitions. [2021-08-21 11:50:29,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:29,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 8131 transitions. [2021-08-21 11:50:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:29,094 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:29,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:29,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-21 11:50:29,095 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:29,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:29,095 INFO L82 PathProgramCache]: Analyzing trace with hash 861430075, now seen corresponding path program 77 times [2021-08-21 11:50:29,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:29,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596597268] [2021-08-21 11:50:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:29,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:29,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:29,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596597268] [2021-08-21 11:50:29,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596597268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:29,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:29,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:29,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682562284] [2021-08-21 11:50:29,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:29,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:29,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:29,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:29,808 INFO L87 Difference]: Start difference. First operand 3038 states and 8131 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:33,556 INFO L93 Difference]: Finished difference Result 8019 states and 20739 transitions. [2021-08-21 11:50:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:50:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:33,567 INFO L225 Difference]: With dead ends: 8019 [2021-08-21 11:50:33,567 INFO L226 Difference]: Without dead ends: 8019 [2021-08-21 11:50:33,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3271.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:50:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2021-08-21 11:50:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 3002. [2021-08-21 11:50:33,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 3000 states have (on average 2.6743333333333332) internal successors, (8023), 3001 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 8023 transitions. [2021-08-21 11:50:33,649 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 8023 transitions. Word has length 94 [2021-08-21 11:50:33,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:33,649 INFO L470 AbstractCegarLoop]: Abstraction has 3002 states and 8023 transitions. [2021-08-21 11:50:33,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:33,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 8023 transitions. [2021-08-21 11:50:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:33,653 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:33,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:33,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-21 11:50:33,653 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1213943197, now seen corresponding path program 78 times [2021-08-21 11:50:33,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:33,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731783284] [2021-08-21 11:50:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:33,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:34,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:34,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731783284] [2021-08-21 11:50:34,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731783284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:34,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:34,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:34,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061604858] [2021-08-21 11:50:34,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:34,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:34,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:34,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:34,381 INFO L87 Difference]: Start difference. First operand 3002 states and 8023 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:37,984 INFO L93 Difference]: Finished difference Result 7681 states and 19733 transitions. [2021-08-21 11:50:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:37,994 INFO L225 Difference]: With dead ends: 7681 [2021-08-21 11:50:37,994 INFO L226 Difference]: Without dead ends: 7681 [2021-08-21 11:50:37,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3106.0ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7681 states. [2021-08-21 11:50:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7681 to 3004. [2021-08-21 11:50:38,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 3002 states have (on average 2.6742171885409727) internal successors, (8028), 3003 states have internal predecessors, (8028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:38,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 8028 transitions. [2021-08-21 11:50:38,054 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 8028 transitions. Word has length 94 [2021-08-21 11:50:38,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:38,054 INFO L470 AbstractCegarLoop]: Abstraction has 3004 states and 8028 transitions. [2021-08-21 11:50:38,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 8028 transitions. [2021-08-21 11:50:38,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:38,057 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:38,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:38,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-21 11:50:38,057 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:38,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1785761771, now seen corresponding path program 79 times [2021-08-21 11:50:38,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:38,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351351075] [2021-08-21 11:50:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:38,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:38,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:38,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351351075] [2021-08-21 11:50:38,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351351075] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:38,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:38,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:38,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735747359] [2021-08-21 11:50:38,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:38,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:38,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:38,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:38,950 INFO L87 Difference]: Start difference. First operand 3004 states and 8028 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:42,698 INFO L93 Difference]: Finished difference Result 7664 states and 19697 transitions. [2021-08-21 11:50:42,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:50:42,699 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:42,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:42,708 INFO L225 Difference]: With dead ends: 7664 [2021-08-21 11:50:42,708 INFO L226 Difference]: Without dead ends: 7664 [2021-08-21 11:50:42,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3355.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:50:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2021-08-21 11:50:42,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 3002. [2021-08-21 11:50:42,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 3000 states have (on average 2.6743333333333332) internal successors, (8023), 3001 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 8023 transitions. [2021-08-21 11:50:42,765 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 8023 transitions. Word has length 94 [2021-08-21 11:50:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:42,765 INFO L470 AbstractCegarLoop]: Abstraction has 3002 states and 8023 transitions. [2021-08-21 11:50:42,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:42,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 8023 transitions. [2021-08-21 11:50:42,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:42,768 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:42,768 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:42,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-21 11:50:42,769 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:42,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:42,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1094431971, now seen corresponding path program 80 times [2021-08-21 11:50:42,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:42,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285946436] [2021-08-21 11:50:42,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:42,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:43,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285946436] [2021-08-21 11:50:43,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285946436] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:43,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:43,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:43,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076282680] [2021-08-21 11:50:43,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:43,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:43,498 INFO L87 Difference]: Start difference. First operand 3002 states and 8023 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:48,576 INFO L93 Difference]: Finished difference Result 9079 states and 23294 transitions. [2021-08-21 11:50:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:50:48,577 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:48,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:48,591 INFO L225 Difference]: With dead ends: 9079 [2021-08-21 11:50:48,591 INFO L226 Difference]: Without dead ends: 9079 [2021-08-21 11:50:48,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4465.4ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:50:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9079 states. [2021-08-21 11:50:48,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9079 to 3014. [2021-08-21 11:50:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3012 states have (on average 2.6756308100929616) internal successors, (8059), 3013 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 8059 transitions. [2021-08-21 11:50:48,655 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 8059 transitions. Word has length 94 [2021-08-21 11:50:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:48,656 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 8059 transitions. [2021-08-21 11:50:48,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 8059 transitions. [2021-08-21 11:50:48,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:48,659 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:48,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:48,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-21 11:50:48,659 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:48,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:48,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1696432779, now seen corresponding path program 81 times [2021-08-21 11:50:48,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:48,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921606687] [2021-08-21 11:50:48,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:48,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:49,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:49,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921606687] [2021-08-21 11:50:49,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921606687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:49,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:49,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:49,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912101138] [2021-08-21 11:50:49,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:49,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:49,417 INFO L87 Difference]: Start difference. First operand 3014 states and 8059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:53,599 INFO L93 Difference]: Finished difference Result 8280 states and 21273 transitions. [2021-08-21 11:50:53,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:50:53,600 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:53,611 INFO L225 Difference]: With dead ends: 8280 [2021-08-21 11:50:53,611 INFO L226 Difference]: Without dead ends: 8280 [2021-08-21 11:50:53,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3503.5ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:50:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2021-08-21 11:50:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 2990. [2021-08-21 11:50:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2988 states have (on average 2.6730254350736278) internal successors, (7987), 2989 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 7987 transitions. [2021-08-21 11:50:53,679 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 7987 transitions. Word has length 94 [2021-08-21 11:50:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 7987 transitions. [2021-08-21 11:50:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 7987 transitions. [2021-08-21 11:50:53,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:53,682 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:53,683 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] [2021-08-21 11:50:53,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-21 11:50:53,683 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:53,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1656617595, now seen corresponding path program 82 times [2021-08-21 11:50:53,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:53,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623666806] [2021-08-21 11:50:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:53,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:54,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:54,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623666806] [2021-08-21 11:50:54,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623666806] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:54,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:54,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893917915] [2021-08-21 11:50:54,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:54,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:54,447 INFO L87 Difference]: Start difference. First operand 2990 states and 7987 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:50:57,970 INFO L93 Difference]: Finished difference Result 7780 states and 19985 transitions. [2021-08-21 11:50:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:50:57,970 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:50:57,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:50:57,980 INFO L225 Difference]: With dead ends: 7780 [2021-08-21 11:50:57,980 INFO L226 Difference]: Without dead ends: 7780 [2021-08-21 11:50:57,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3060.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:50:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2021-08-21 11:50:58,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 2996. [2021-08-21 11:50:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2996 states, 2994 states have (on average 2.672678690714763) internal successors, (8002), 2995 states have internal predecessors, (8002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2996 states to 2996 states and 8002 transitions. [2021-08-21 11:50:58,059 INFO L78 Accepts]: Start accepts. Automaton has 2996 states and 8002 transitions. Word has length 94 [2021-08-21 11:50:58,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:50:58,059 INFO L470 AbstractCegarLoop]: Abstraction has 2996 states and 8002 transitions. [2021-08-21 11:50:58,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:50:58,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2996 states and 8002 transitions. [2021-08-21 11:50:58,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:50:58,062 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:50:58,062 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:50:58,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-21 11:50:58,062 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:50:58,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:50:58,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1084799021, now seen corresponding path program 83 times [2021-08-21 11:50:58,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:50:58,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966595707] [2021-08-21 11:50:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:50:58,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:50:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:50:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:50:58,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:50:58,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966595707] [2021-08-21 11:50:58,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966595707] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:50:58,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:50:58,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:50:58,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612659860] [2021-08-21 11:50:58,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:50:58,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:50:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:50:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:50:58,785 INFO L87 Difference]: Start difference. First operand 2996 states and 8002 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:02,441 INFO L93 Difference]: Finished difference Result 7954 states and 20330 transitions. [2021-08-21 11:51:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:51:02,442 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:02,451 INFO L225 Difference]: With dead ends: 7954 [2021-08-21 11:51:02,451 INFO L226 Difference]: Without dead ends: 7954 [2021-08-21 11:51:02,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3192.5ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:51:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2021-08-21 11:51:02,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 2994. [2021-08-21 11:51:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.672794117647059) internal successors, (7997), 2993 states have internal predecessors, (7997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 7997 transitions. [2021-08-21 11:51:02,507 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 7997 transitions. Word has length 94 [2021-08-21 11:51:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:02,507 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 7997 transitions. [2021-08-21 11:51:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 7997 transitions. [2021-08-21 11:51:02,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:02,511 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:02,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:02,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-21 11:51:02,511 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:02,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:02,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1645444407, now seen corresponding path program 84 times [2021-08-21 11:51:02,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:02,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640601090] [2021-08-21 11:51:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:02,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:03,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:03,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640601090] [2021-08-21 11:51:03,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640601090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:03,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:03,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:03,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845412288] [2021-08-21 11:51:03,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:03,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:03,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:03,247 INFO L87 Difference]: Start difference. First operand 2994 states and 7997 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:06,936 INFO L93 Difference]: Finished difference Result 7795 states and 20020 transitions. [2021-08-21 11:51:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:51:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:06,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:06,946 INFO L225 Difference]: With dead ends: 7795 [2021-08-21 11:51:06,946 INFO L226 Difference]: Without dead ends: 7795 [2021-08-21 11:51:06,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3273.7ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:51:06,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7795 states. [2021-08-21 11:51:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7795 to 2990. [2021-08-21 11:51:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2988 states have (on average 2.6730254350736278) internal successors, (7987), 2989 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 7987 transitions. [2021-08-21 11:51:06,999 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 7987 transitions. Word has length 94 [2021-08-21 11:51:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:06,999 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 7987 transitions. [2021-08-21 11:51:07,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 7987 transitions. [2021-08-21 11:51:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:07,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:07,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:07,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-21 11:51:07,003 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:07,003 INFO L82 PathProgramCache]: Analyzing trace with hash -243874117, now seen corresponding path program 85 times [2021-08-21 11:51:07,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:07,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010349163] [2021-08-21 11:51:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:07,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:07,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:07,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010349163] [2021-08-21 11:51:07,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010349163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:07,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:07,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:07,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952488994] [2021-08-21 11:51:07,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:07,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:07,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:07,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:07,720 INFO L87 Difference]: Start difference. First operand 2990 states and 7987 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:12,990 INFO L93 Difference]: Finished difference Result 9413 states and 24174 transitions. [2021-08-21 11:51:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:51:12,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:13,002 INFO L225 Difference]: With dead ends: 9413 [2021-08-21 11:51:13,002 INFO L226 Difference]: Without dead ends: 9413 [2021-08-21 11:51:13,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4641.8ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:51:13,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2021-08-21 11:51:13,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 3026. [2021-08-21 11:51:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3024 states have (on average 2.6769179894179893) internal successors, (8095), 3025 states have internal predecessors, (8095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 8095 transitions. [2021-08-21 11:51:13,065 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 8095 transitions. Word has length 94 [2021-08-21 11:51:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:13,065 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 8095 transitions. [2021-08-21 11:51:13,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 8095 transitions. [2021-08-21 11:51:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:13,068 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:13,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:13,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-21 11:51:13,068 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:13,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash -845874925, now seen corresponding path program 86 times [2021-08-21 11:51:13,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:13,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204265766] [2021-08-21 11:51:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:13,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:13,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:13,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204265766] [2021-08-21 11:51:13,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204265766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:13,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:13,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:13,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615912015] [2021-08-21 11:51:13,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:13,803 INFO L87 Difference]: Start difference. First operand 3026 states and 8095 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:18,976 INFO L93 Difference]: Finished difference Result 9562 states and 24413 transitions. [2021-08-21 11:51:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:51:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:18,988 INFO L225 Difference]: With dead ends: 9562 [2021-08-21 11:51:18,988 INFO L226 Difference]: Without dead ends: 9562 [2021-08-21 11:51:18,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4513.2ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:51:18,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9562 states. [2021-08-21 11:51:19,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9562 to 3014. [2021-08-21 11:51:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3012 states have (on average 2.6756308100929616) internal successors, (8059), 3013 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:19,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 8059 transitions. [2021-08-21 11:51:19,053 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 8059 transitions. Word has length 94 [2021-08-21 11:51:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:19,053 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 8059 transitions. [2021-08-21 11:51:19,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:19,053 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 8059 transitions. [2021-08-21 11:51:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:19,056 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:19,056 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] [2021-08-21 11:51:19,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-21 11:51:19,056 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:19,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2075674239, now seen corresponding path program 87 times [2021-08-21 11:51:19,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:19,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392625295] [2021-08-21 11:51:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:19,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:19,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:19,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392625295] [2021-08-21 11:51:19,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392625295] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:19,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:19,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:19,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168062031] [2021-08-21 11:51:19,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:19,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:19,766 INFO L87 Difference]: Start difference. First operand 3014 states and 8059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:23,802 INFO L93 Difference]: Finished difference Result 8533 states and 21931 transitions. [2021-08-21 11:51:23,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:51:23,803 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:23,813 INFO L225 Difference]: With dead ends: 8533 [2021-08-21 11:51:23,813 INFO L226 Difference]: Without dead ends: 8533 [2021-08-21 11:51:23,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3442.1ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:51:23,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2021-08-21 11:51:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 2966. [2021-08-21 11:51:23,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.670377867746289) internal successors, (7915), 2965 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7915 transitions. [2021-08-21 11:51:23,871 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7915 transitions. Word has length 94 [2021-08-21 11:51:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:23,871 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7915 transitions. [2021-08-21 11:51:23,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7915 transitions. [2021-08-21 11:51:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:23,874 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:23,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:23,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-21 11:51:23,874 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:23,875 INFO L82 PathProgramCache]: Analyzing trace with hash 261676805, now seen corresponding path program 88 times [2021-08-21 11:51:23,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:23,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031843294] [2021-08-21 11:51:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:23,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:24,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:24,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031843294] [2021-08-21 11:51:24,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031843294] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:24,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:24,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:24,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906655925] [2021-08-21 11:51:24,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:24,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:24,566 INFO L87 Difference]: Start difference. First operand 2966 states and 7915 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:27,847 INFO L93 Difference]: Finished difference Result 6919 states and 17776 transitions. [2021-08-21 11:51:27,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:51:27,847 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:27,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:27,856 INFO L225 Difference]: With dead ends: 6919 [2021-08-21 11:51:27,856 INFO L226 Difference]: Without dead ends: 6919 [2021-08-21 11:51:27,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2812.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:51:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6919 states. [2021-08-21 11:51:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6919 to 2974. [2021-08-21 11:51:27,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2972 states have (on average 2.6699192462987886) internal successors, (7935), 2973 states have internal predecessors, (7935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7935 transitions. [2021-08-21 11:51:27,911 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7935 transitions. Word has length 94 [2021-08-21 11:51:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:27,911 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 7935 transitions. [2021-08-21 11:51:27,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7935 transitions. [2021-08-21 11:51:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:27,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:27,915 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] [2021-08-21 11:51:27,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-21 11:51:27,915 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:27,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:27,916 INFO L82 PathProgramCache]: Analyzing trace with hash 833495379, now seen corresponding path program 89 times [2021-08-21 11:51:27,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:27,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013753865] [2021-08-21 11:51:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:27,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:28,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:28,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013753865] [2021-08-21 11:51:28,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013753865] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:28,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:28,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:28,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040723599] [2021-08-21 11:51:28,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:28,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:28,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:28,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:28,652 INFO L87 Difference]: Start difference. First operand 2974 states and 7935 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:32,014 INFO L93 Difference]: Finished difference Result 7093 states and 18121 transitions. [2021-08-21 11:51:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:51:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:32,024 INFO L225 Difference]: With dead ends: 7093 [2021-08-21 11:51:32,025 INFO L226 Difference]: Without dead ends: 7093 [2021-08-21 11:51:32,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2962.1ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:51:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2021-08-21 11:51:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 2972. [2021-08-21 11:51:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.67003367003367) internal successors, (7930), 2971 states have internal predecessors, (7930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7930 transitions. [2021-08-21 11:51:32,096 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7930 transitions. Word has length 94 [2021-08-21 11:51:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:32,096 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7930 transitions. [2021-08-21 11:51:32,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7930 transitions. [2021-08-21 11:51:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:32,099 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:32,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:32,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-21 11:51:32,099 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash 272849993, now seen corresponding path program 90 times [2021-08-21 11:51:32,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:32,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115107163] [2021-08-21 11:51:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:32,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:32,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:32,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115107163] [2021-08-21 11:51:32,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115107163] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:32,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:32,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:32,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380850808] [2021-08-21 11:51:32,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:32,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:32,790 INFO L87 Difference]: Start difference. First operand 2972 states and 7930 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:36,344 INFO L93 Difference]: Finished difference Result 7144 states and 18235 transitions. [2021-08-21 11:51:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:51:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:36,354 INFO L225 Difference]: With dead ends: 7144 [2021-08-21 11:51:36,354 INFO L226 Difference]: Without dead ends: 7144 [2021-08-21 11:51:36,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3089.2ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:51:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7144 states. [2021-08-21 11:51:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7144 to 2968. [2021-08-21 11:51:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2966 states have (on average 2.670262980445044) internal successors, (7920), 2967 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 7920 transitions. [2021-08-21 11:51:36,410 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 7920 transitions. Word has length 94 [2021-08-21 11:51:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:36,410 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 7920 transitions. [2021-08-21 11:51:36,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 7920 transitions. [2021-08-21 11:51:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:36,413 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:36,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:36,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-21 11:51:36,414 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:36,414 INFO L82 PathProgramCache]: Analyzing trace with hash -249674389, now seen corresponding path program 91 times [2021-08-21 11:51:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:36,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343299383] [2021-08-21 11:51:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:36,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:37,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:37,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343299383] [2021-08-21 11:51:37,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343299383] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:37,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:37,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:37,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806052049] [2021-08-21 11:51:37,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:37,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:37,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:37,142 INFO L87 Difference]: Start difference. First operand 2968 states and 7920 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:40,889 INFO L93 Difference]: Finished difference Result 6947 states and 17839 transitions. [2021-08-21 11:51:40,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:51:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:40,898 INFO L225 Difference]: With dead ends: 6947 [2021-08-21 11:51:40,898 INFO L226 Difference]: Without dead ends: 6947 [2021-08-21 11:51:40,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3279.7ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:51:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2021-08-21 11:51:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 2966. [2021-08-21 11:51:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.670377867746289) internal successors, (7915), 2965 states have internal predecessors, (7915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7915 transitions. [2021-08-21 11:51:40,948 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7915 transitions. Word has length 94 [2021-08-21 11:51:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:40,948 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7915 transitions. [2021-08-21 11:51:40,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:40,948 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7915 transitions. [2021-08-21 11:51:40,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:40,951 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:40,951 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] [2021-08-21 11:51:40,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-21 11:51:40,951 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:40,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash -647757445, now seen corresponding path program 92 times [2021-08-21 11:51:40,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:40,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071691534] [2021-08-21 11:51:40,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:40,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:41,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:41,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071691534] [2021-08-21 11:51:41,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071691534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:41,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:41,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:41,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907646644] [2021-08-21 11:51:41,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:41,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:41,662 INFO L87 Difference]: Start difference. First operand 2966 states and 7915 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:47,358 INFO L93 Difference]: Finished difference Result 7478 states and 19238 transitions. [2021-08-21 11:51:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:51:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:47,367 INFO L225 Difference]: With dead ends: 7478 [2021-08-21 11:51:47,367 INFO L226 Difference]: Without dead ends: 7478 [2021-08-21 11:51:47,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4866.5ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:51:47,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7478 states. [2021-08-21 11:51:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7478 to 3014. [2021-08-21 11:51:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3012 states have (on average 2.6756308100929616) internal successors, (8059), 3013 states have internal predecessors, (8059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 8059 transitions. [2021-08-21 11:51:47,423 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 8059 transitions. Word has length 94 [2021-08-21 11:51:47,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:47,424 INFO L470 AbstractCegarLoop]: Abstraction has 3014 states and 8059 transitions. [2021-08-21 11:51:47,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:47,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 8059 transitions. [2021-08-21 11:51:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:47,427 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:47,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:47,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-21 11:51:47,427 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:47,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:47,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1249758253, now seen corresponding path program 93 times [2021-08-21 11:51:47,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:47,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110468428] [2021-08-21 11:51:47,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:47,428 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:48,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:48,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110468428] [2021-08-21 11:51:48,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110468428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:48,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:48,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:48,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322829925] [2021-08-21 11:51:48,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:48,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:48,132 INFO L87 Difference]: Start difference. First operand 3014 states and 8059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:53,559 INFO L93 Difference]: Finished difference Result 7627 states and 19477 transitions. [2021-08-21 11:51:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:51:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:53,568 INFO L225 Difference]: With dead ends: 7627 [2021-08-21 11:51:53,569 INFO L226 Difference]: Without dead ends: 7627 [2021-08-21 11:51:53,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4694.2ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:51:53,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7627 states. [2021-08-21 11:51:53,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7627 to 3002. [2021-08-21 11:51:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 3000 states have (on average 2.6743333333333332) internal successors, (8023), 3001 states have internal predecessors, (8023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 8023 transitions. [2021-08-21 11:51:53,623 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 8023 transitions. Word has length 94 [2021-08-21 11:51:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:53,623 INFO L470 AbstractCegarLoop]: Abstraction has 3002 states and 8023 transitions. [2021-08-21 11:51:53,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 8023 transitions. [2021-08-21 11:51:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:53,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:53,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:53,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-21 11:51:53,626 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1671790911, now seen corresponding path program 94 times [2021-08-21 11:51:53,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:53,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097087355] [2021-08-21 11:51:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:53,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:51:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:51:54,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:51:54,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097087355] [2021-08-21 11:51:54,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097087355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:51:54,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:51:54,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:51:54,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590076243] [2021-08-21 11:51:54,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:51:54,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:51:54,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:51:54,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:51:54,394 INFO L87 Difference]: Start difference. First operand 3002 states and 8023 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:51:59,603 INFO L93 Difference]: Finished difference Result 7656 states and 19545 transitions. [2021-08-21 11:51:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:51:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:51:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:51:59,611 INFO L225 Difference]: With dead ends: 7656 [2021-08-21 11:51:59,611 INFO L226 Difference]: Without dead ends: 7656 [2021-08-21 11:51:59,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4423.3ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 11:51:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2021-08-21 11:51:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 2978. [2021-08-21 11:51:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2976 states have (on average 2.671706989247312) internal successors, (7951), 2977 states have internal predecessors, (7951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 7951 transitions. [2021-08-21 11:51:59,656 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 7951 transitions. Word has length 94 [2021-08-21 11:51:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:51:59,656 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 7951 transitions. [2021-08-21 11:51:59,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:51:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 7951 transitions. [2021-08-21 11:51:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:51:59,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:51:59,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:51:59,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-21 11:51:59,659 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:51:59,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:51:59,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1962413151, now seen corresponding path program 95 times [2021-08-21 11:51:59,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:51:59,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264440205] [2021-08-21 11:51:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:51:59,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:51:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:00,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:00,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264440205] [2021-08-21 11:52:00,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264440205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:00,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:00,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:00,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753509218] [2021-08-21 11:52:00,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:00,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:00,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:00,364 INFO L87 Difference]: Start difference. First operand 2978 states and 7951 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:04,406 INFO L93 Difference]: Finished difference Result 6418 states and 16506 transitions. [2021-08-21 11:52:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:52:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:04,414 INFO L225 Difference]: With dead ends: 6418 [2021-08-21 11:52:04,414 INFO L226 Difference]: Without dead ends: 6418 [2021-08-21 11:52:04,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3452.3ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:52:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2021-08-21 11:52:04,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 2954. [2021-08-21 11:52:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2954 states, 2952 states have (on average 2.669037940379404) internal successors, (7879), 2953 states have internal predecessors, (7879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2954 states to 2954 states and 7879 transitions. [2021-08-21 11:52:04,460 INFO L78 Accepts]: Start accepts. Automaton has 2954 states and 7879 transitions. Word has length 94 [2021-08-21 11:52:04,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:04,461 INFO L470 AbstractCegarLoop]: Abstraction has 2954 states and 7879 transitions. [2021-08-21 11:52:04,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2954 states and 7879 transitions. [2021-08-21 11:52:04,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:04,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:04,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:04,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-21 11:52:04,464 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:04,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:04,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1044755843, now seen corresponding path program 96 times [2021-08-21 11:52:04,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:04,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460724453] [2021-08-21 11:52:04,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:04,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:05,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:05,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460724453] [2021-08-21 11:52:05,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460724453] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:05,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:05,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:05,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128680786] [2021-08-21 11:52:05,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:05,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:05,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:05,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:05,177 INFO L87 Difference]: Start difference. First operand 2954 states and 7879 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:08,157 INFO L93 Difference]: Finished difference Result 5430 states and 13825 transitions. [2021-08-21 11:52:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:08,163 INFO L225 Difference]: With dead ends: 5430 [2021-08-21 11:52:08,163 INFO L226 Difference]: Without dead ends: 5430 [2021-08-21 11:52:08,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2630.6ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5430 states. [2021-08-21 11:52:08,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5430 to 2970. [2021-08-21 11:52:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.6681266846361185) internal successors, (7919), 2969 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7919 transitions. [2021-08-21 11:52:08,206 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7919 transitions. Word has length 94 [2021-08-21 11:52:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:08,206 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7919 transitions. [2021-08-21 11:52:08,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7919 transitions. [2021-08-21 11:52:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:08,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:08,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:08,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-21 11:52:08,209 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:08,210 INFO L82 PathProgramCache]: Analyzing trace with hash 985725971, now seen corresponding path program 97 times [2021-08-21 11:52:08,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:08,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645621924] [2021-08-21 11:52:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:08,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:08,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:08,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:08,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645621924] [2021-08-21 11:52:08,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645621924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:08,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:08,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:08,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844640579] [2021-08-21 11:52:08,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:08,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:08,919 INFO L87 Difference]: Start difference. First operand 2970 states and 7919 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:11,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:11,974 INFO L93 Difference]: Finished difference Result 5747 states and 14466 transitions. [2021-08-21 11:52:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:11,981 INFO L225 Difference]: With dead ends: 5747 [2021-08-21 11:52:11,982 INFO L226 Difference]: Without dead ends: 5747 [2021-08-21 11:52:11,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2630.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5747 states. [2021-08-21 11:52:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5747 to 2972. [2021-08-21 11:52:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.668013468013468) internal successors, (7924), 2971 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7924 transitions. [2021-08-21 11:52:12,031 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7924 transitions. Word has length 94 [2021-08-21 11:52:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:12,031 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7924 transitions. [2021-08-21 11:52:12,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7924 transitions. [2021-08-21 11:52:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:12,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:12,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:12,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-21 11:52:12,034 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:12,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1557544545, now seen corresponding path program 98 times [2021-08-21 11:52:12,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:12,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709337876] [2021-08-21 11:52:12,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:12,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:12,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:12,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709337876] [2021-08-21 11:52:12,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709337876] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:12,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:12,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:12,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009267885] [2021-08-21 11:52:12,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:12,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:12,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:12,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:12,748 INFO L87 Difference]: Start difference. First operand 2972 states and 7924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:16,001 INFO L93 Difference]: Finished difference Result 5606 states and 14175 transitions. [2021-08-21 11:52:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:52:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:16,007 INFO L225 Difference]: With dead ends: 5606 [2021-08-21 11:52:16,008 INFO L226 Difference]: Without dead ends: 5606 [2021-08-21 11:52:16,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2787.6ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:52:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2021-08-21 11:52:16,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 2966. [2021-08-21 11:52:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6683535762483133) internal successors, (7909), 2965 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:16,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7909 transitions. [2021-08-21 11:52:16,068 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7909 transitions. Word has length 94 [2021-08-21 11:52:16,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:16,068 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7909 transitions. [2021-08-21 11:52:16,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:16,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7909 transitions. [2021-08-21 11:52:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:16,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:16,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:16,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-21 11:52:16,071 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:16,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1148475329, now seen corresponding path program 99 times [2021-08-21 11:52:16,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:16,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844061055] [2021-08-21 11:52:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:16,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:16,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:16,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844061055] [2021-08-21 11:52:16,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844061055] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:16,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:16,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:16,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15658808] [2021-08-21 11:52:16,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:16,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:16,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:16,765 INFO L87 Difference]: Start difference. First operand 2966 states and 7909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:19,821 INFO L93 Difference]: Finished difference Result 5804 states and 14595 transitions. [2021-08-21 11:52:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:19,822 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:19,827 INFO L225 Difference]: With dead ends: 5804 [2021-08-21 11:52:19,828 INFO L226 Difference]: Without dead ends: 5804 [2021-08-21 11:52:19,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2633.5ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5804 states. [2021-08-21 11:52:19,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5804 to 2972. [2021-08-21 11:52:19,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.668013468013468) internal successors, (7924), 2971 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7924 transitions. [2021-08-21 11:52:19,874 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7924 transitions. Word has length 94 [2021-08-21 11:52:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:19,874 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7924 transitions. [2021-08-21 11:52:19,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7924 transitions. [2021-08-21 11:52:19,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:19,878 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:19,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:19,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-21 11:52:19,878 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:19,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:19,878 INFO L82 PathProgramCache]: Analyzing trace with hash -576656755, now seen corresponding path program 100 times [2021-08-21 11:52:19,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:19,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935512994] [2021-08-21 11:52:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:19,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:20,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:20,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935512994] [2021-08-21 11:52:20,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935512994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:20,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:20,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:20,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498047200] [2021-08-21 11:52:20,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:20,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:20,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:20,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:20,599 INFO L87 Difference]: Start difference. First operand 2972 states and 7924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:23,929 INFO L93 Difference]: Finished difference Result 5978 states and 14940 transitions. [2021-08-21 11:52:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:52:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:23,936 INFO L225 Difference]: With dead ends: 5978 [2021-08-21 11:52:23,937 INFO L226 Difference]: Without dead ends: 5978 [2021-08-21 11:52:23,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2827.6ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:52:23,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5978 states. [2021-08-21 11:52:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5978 to 2970. [2021-08-21 11:52:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.6681266846361185) internal successors, (7919), 2969 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:23,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7919 transitions. [2021-08-21 11:52:23,992 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7919 transitions. Word has length 94 [2021-08-21 11:52:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:23,992 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7919 transitions. [2021-08-21 11:52:23,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7919 transitions. [2021-08-21 11:52:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:23,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:23,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:23,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-21 11:52:23,996 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:23,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1137302141, now seen corresponding path program 101 times [2021-08-21 11:52:23,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:23,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092075927] [2021-08-21 11:52:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:23,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:24,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:24,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092075927] [2021-08-21 11:52:24,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092075927] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:24,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:24,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:24,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015521885] [2021-08-21 11:52:24,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:24,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:24,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:24,763 INFO L87 Difference]: Start difference. First operand 2970 states and 7919 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:28,157 INFO L93 Difference]: Finished difference Result 5661 states and 14299 transitions. [2021-08-21 11:52:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:52:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:28,163 INFO L225 Difference]: With dead ends: 5661 [2021-08-21 11:52:28,163 INFO L226 Difference]: Without dead ends: 5661 [2021-08-21 11:52:28,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3026.6ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:52:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5661 states. [2021-08-21 11:52:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5661 to 2958. [2021-08-21 11:52:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2956 states have (on average 2.668809201623816) internal successors, (7889), 2957 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7889 transitions. [2021-08-21 11:52:28,209 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7889 transitions. Word has length 94 [2021-08-21 11:52:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:28,209 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 7889 transitions. [2021-08-21 11:52:28,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7889 transitions. [2021-08-21 11:52:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:28,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:28,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:28,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-21 11:52:28,212 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:28,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1092509469, now seen corresponding path program 102 times [2021-08-21 11:52:28,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:28,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806271265] [2021-08-21 11:52:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:28,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:28,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:28,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806271265] [2021-08-21 11:52:28,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806271265] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:28,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:28,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:28,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688677230] [2021-08-21 11:52:28,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:28,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:28,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:28,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:28,921 INFO L87 Difference]: Start difference. First operand 2958 states and 7889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:31,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:31,993 INFO L93 Difference]: Finished difference Result 5529 states and 14008 transitions. [2021-08-21 11:52:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:31,993 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:31,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:31,999 INFO L225 Difference]: With dead ends: 5529 [2021-08-21 11:52:31,999 INFO L226 Difference]: Without dead ends: 5529 [2021-08-21 11:52:31,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2629.2ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-08-21 11:52:32,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 2966. [2021-08-21 11:52:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6683535762483133) internal successors, (7909), 2965 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7909 transitions. [2021-08-21 11:52:32,044 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7909 transitions. Word has length 94 [2021-08-21 11:52:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:32,044 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7909 transitions. [2021-08-21 11:52:32,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7909 transitions. [2021-08-21 11:52:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:32,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:32,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:32,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-21 11:52:32,048 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:32,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1664328043, now seen corresponding path program 103 times [2021-08-21 11:52:32,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:32,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286938024] [2021-08-21 11:52:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:32,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:32,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:32,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286938024] [2021-08-21 11:52:32,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286938024] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:32,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:32,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:32,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511414181] [2021-08-21 11:52:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:32,739 INFO L87 Difference]: Start difference. First operand 2966 states and 7909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:35,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:35,957 INFO L93 Difference]: Finished difference Result 5703 states and 14353 transitions. [2021-08-21 11:52:35,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:52:35,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:35,965 INFO L225 Difference]: With dead ends: 5703 [2021-08-21 11:52:35,965 INFO L226 Difference]: Without dead ends: 5703 [2021-08-21 11:52:35,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2828.0ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:52:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2021-08-21 11:52:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 2964. [2021-08-21 11:52:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2962 states have (on average 2.6684672518568533) internal successors, (7904), 2963 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 7904 transitions. [2021-08-21 11:52:36,014 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 7904 transitions. Word has length 94 [2021-08-21 11:52:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:36,014 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 7904 transitions. [2021-08-21 11:52:36,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 7904 transitions. [2021-08-21 11:52:36,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:36,017 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:36,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:36,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-21 11:52:36,017 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:36,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:36,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1103682657, now seen corresponding path program 104 times [2021-08-21 11:52:36,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:36,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694683485] [2021-08-21 11:52:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:36,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:36,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:36,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694683485] [2021-08-21 11:52:36,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694683485] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:36,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:36,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:36,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972396447] [2021-08-21 11:52:36,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:36,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:36,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:36,730 INFO L87 Difference]: Start difference. First operand 2964 states and 7904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:40,250 INFO L93 Difference]: Finished difference Result 5754 states and 14467 transitions. [2021-08-21 11:52:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:52:40,250 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:40,257 INFO L225 Difference]: With dead ends: 5754 [2021-08-21 11:52:40,257 INFO L226 Difference]: Without dead ends: 5754 [2021-08-21 11:52:40,257 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2967.9ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:52:40,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5754 states. [2021-08-21 11:52:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5754 to 2960. [2021-08-21 11:52:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2958 states have (on average 2.6686950642325895) internal successors, (7894), 2959 states have internal predecessors, (7894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 7894 transitions. [2021-08-21 11:52:40,304 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 7894 transitions. Word has length 94 [2021-08-21 11:52:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:40,304 INFO L470 AbstractCegarLoop]: Abstraction has 2960 states and 7894 transitions. [2021-08-21 11:52:40,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 7894 transitions. [2021-08-21 11:52:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:40,307 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:40,307 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:40,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-21 11:52:40,307 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:40,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:40,308 INFO L82 PathProgramCache]: Analyzing trace with hash 581158275, now seen corresponding path program 105 times [2021-08-21 11:52:40,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:40,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294413293] [2021-08-21 11:52:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:40,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:41,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:41,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294413293] [2021-08-21 11:52:41,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294413293] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:41,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:41,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:41,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528530600] [2021-08-21 11:52:41,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:41,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:41,002 INFO L87 Difference]: Start difference. First operand 2960 states and 7894 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:44,591 INFO L93 Difference]: Finished difference Result 5382 states and 13702 transitions. [2021-08-21 11:52:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:52:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:44,598 INFO L225 Difference]: With dead ends: 5382 [2021-08-21 11:52:44,599 INFO L226 Difference]: Without dead ends: 5382 [2021-08-21 11:52:44,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3136.4ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:52:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2021-08-21 11:52:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 2958. [2021-08-21 11:52:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2956 states have (on average 2.668809201623816) internal successors, (7889), 2957 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7889 transitions. [2021-08-21 11:52:44,645 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7889 transitions. Word has length 94 [2021-08-21 11:52:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:44,645 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 7889 transitions. [2021-08-21 11:52:44,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7889 transitions. [2021-08-21 11:52:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:44,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:44,648 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] [2021-08-21 11:52:44,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-21 11:52:44,648 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:44,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1040444737, now seen corresponding path program 106 times [2021-08-21 11:52:44,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:44,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189173560] [2021-08-21 11:52:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:44,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:45,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:45,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189173560] [2021-08-21 11:52:45,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189173560] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:45,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:45,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:45,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713473527] [2021-08-21 11:52:45,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:45,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:45,360 INFO L87 Difference]: Start difference. First operand 2958 states and 7889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:49,023 INFO L93 Difference]: Finished difference Result 6792 states and 17453 transitions. [2021-08-21 11:52:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:49,031 INFO L225 Difference]: With dead ends: 6792 [2021-08-21 11:52:49,031 INFO L226 Difference]: Without dead ends: 6792 [2021-08-21 11:52:49,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3219.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:49,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6792 states. [2021-08-21 11:52:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6792 to 3054. [2021-08-21 11:52:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3054 states, 3052 states have (on average 2.679226736566186) internal successors, (8177), 3053 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3054 states to 3054 states and 8177 transitions. [2021-08-21 11:52:49,082 INFO L78 Accepts]: Start accepts. Automaton has 3054 states and 8177 transitions. Word has length 94 [2021-08-21 11:52:49,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:49,082 INFO L470 AbstractCegarLoop]: Abstraction has 3054 states and 8177 transitions. [2021-08-21 11:52:49,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:49,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3054 states and 8177 transitions. [2021-08-21 11:52:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:49,085 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:49,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:49,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-21 11:52:49,085 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:49,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:49,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1082515083, now seen corresponding path program 107 times [2021-08-21 11:52:49,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:49,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672584328] [2021-08-21 11:52:49,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:49,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:49,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672584328] [2021-08-21 11:52:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672584328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:49,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:49,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:49,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806640344] [2021-08-21 11:52:49,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:49,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:49,822 INFO L87 Difference]: Start difference. First operand 3054 states and 8177 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:53,405 INFO L93 Difference]: Finished difference Result 7466 states and 19252 transitions. [2021-08-21 11:52:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-21 11:52:53,406 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:53,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:53,416 INFO L225 Difference]: With dead ends: 7466 [2021-08-21 11:52:53,416 INFO L226 Difference]: Without dead ends: 7466 [2021-08-21 11:52:53,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3118.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 11:52:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7466 states. [2021-08-21 11:52:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7466 to 3018. [2021-08-21 11:52:53,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3016 states have (on average 2.675397877984085) internal successors, (8069), 3017 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 8069 transitions. [2021-08-21 11:52:53,470 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 8069 transitions. Word has length 94 [2021-08-21 11:52:53,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:53,470 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 8069 transitions. [2021-08-21 11:52:53,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:53,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 8069 transitions. [2021-08-21 11:52:53,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:53,473 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:53,473 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:53,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-21 11:52:53,473 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:53,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:53,473 INFO L82 PathProgramCache]: Analyzing trace with hash -730001961, now seen corresponding path program 108 times [2021-08-21 11:52:53,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:53,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666521268] [2021-08-21 11:52:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:53,474 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:54,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:54,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666521268] [2021-08-21 11:52:54,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666521268] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:54,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:54,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104963698] [2021-08-21 11:52:54,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:54,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:54,168 INFO L87 Difference]: Start difference. First operand 3018 states and 8069 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:52:57,704 INFO L93 Difference]: Finished difference Result 7128 states and 18246 transitions. [2021-08-21 11:52:57,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:52:57,705 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:52:57,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:52:57,714 INFO L225 Difference]: With dead ends: 7128 [2021-08-21 11:52:57,714 INFO L226 Difference]: Without dead ends: 7128 [2021-08-21 11:52:57,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3042.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:52:57,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7128 states. [2021-08-21 11:52:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7128 to 3020. [2021-08-21 11:52:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3018 states have (on average 2.6752816434724984) internal successors, (8074), 3019 states have internal predecessors, (8074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 8074 transitions. [2021-08-21 11:52:57,770 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 8074 transitions. Word has length 94 [2021-08-21 11:52:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:52:57,771 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 8074 transitions. [2021-08-21 11:52:57,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:52:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 8074 transitions. [2021-08-21 11:52:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:52:57,774 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:52:57,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:52:57,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-21 11:52:57,774 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:52:57,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:52:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash -158183387, now seen corresponding path program 109 times [2021-08-21 11:52:57,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:52:57,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300843569] [2021-08-21 11:52:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:52:57,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:52:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:52:58,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:52:58,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:52:58,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300843569] [2021-08-21 11:52:58,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300843569] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:52:58,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:52:58,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:52:58,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747415756] [2021-08-21 11:52:58,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:52:58,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:52:58,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:52:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:52:58,501 INFO L87 Difference]: Start difference. First operand 3020 states and 8074 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:02,164 INFO L93 Difference]: Finished difference Result 7111 states and 18210 transitions. [2021-08-21 11:53:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:53:02,165 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:02,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:02,173 INFO L225 Difference]: With dead ends: 7111 [2021-08-21 11:53:02,173 INFO L226 Difference]: Without dead ends: 7111 [2021-08-21 11:53:02,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3233.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:53:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7111 states. [2021-08-21 11:53:02,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7111 to 3018. [2021-08-21 11:53:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3016 states have (on average 2.675397877984085) internal successors, (8069), 3017 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 8069 transitions. [2021-08-21 11:53:02,223 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 8069 transitions. Word has length 94 [2021-08-21 11:53:02,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:02,224 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 8069 transitions. [2021-08-21 11:53:02,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 8069 transitions. [2021-08-21 11:53:02,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:02,227 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:02,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:02,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-21 11:53:02,227 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:02,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:02,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1256590167, now seen corresponding path program 110 times [2021-08-21 11:53:02,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:02,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205110637] [2021-08-21 11:53:02,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:02,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:02,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:02,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205110637] [2021-08-21 11:53:02,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205110637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:02,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:02,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:02,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331937306] [2021-08-21 11:53:02,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:02,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:02,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:02,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:02,927 INFO L87 Difference]: Start difference. First operand 3018 states and 8069 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:07,908 INFO L93 Difference]: Finished difference Result 8526 states and 21807 transitions. [2021-08-21 11:53:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 11:53:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:07,918 INFO L225 Difference]: With dead ends: 8526 [2021-08-21 11:53:07,919 INFO L226 Difference]: Without dead ends: 8526 [2021-08-21 11:53:07,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4398.3ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 11:53:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8526 states. [2021-08-21 11:53:07,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8526 to 3030. [2021-08-21 11:53:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3028 states have (on average 2.6766842800528403) internal successors, (8105), 3029 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 8105 transitions. [2021-08-21 11:53:07,977 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 8105 transitions. Word has length 94 [2021-08-21 11:53:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:07,978 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 8105 transitions. [2021-08-21 11:53:07,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:07,978 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 8105 transitions. [2021-08-21 11:53:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:07,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:07,981 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] [2021-08-21 11:53:07,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-21 11:53:07,981 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash 654589359, now seen corresponding path program 111 times [2021-08-21 11:53:07,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:07,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620690723] [2021-08-21 11:53:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:07,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:08,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:08,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620690723] [2021-08-21 11:53:08,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620690723] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:08,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:08,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:08,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110022014] [2021-08-21 11:53:08,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:08,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:08,704 INFO L87 Difference]: Start difference. First operand 3030 states and 8105 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:12,558 INFO L93 Difference]: Finished difference Result 7727 states and 19786 transitions. [2021-08-21 11:53:12,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:53:12,558 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:12,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:12,568 INFO L225 Difference]: With dead ends: 7727 [2021-08-21 11:53:12,568 INFO L226 Difference]: Without dead ends: 7727 [2021-08-21 11:53:12,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3378.1ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:53:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2021-08-21 11:53:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 3006. [2021-08-21 11:53:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3004 states have (on average 2.6741011984021306) internal successors, (8033), 3005 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 8033 transitions. [2021-08-21 11:53:12,622 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 8033 transitions. Word has length 94 [2021-08-21 11:53:12,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:12,623 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 8033 transitions. [2021-08-21 11:53:12,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:12,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 8033 transitions. [2021-08-21 11:53:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:12,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:12,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:12,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-21 11:53:12,626 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 694404543, now seen corresponding path program 112 times [2021-08-21 11:53:12,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:12,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835053734] [2021-08-21 11:53:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:12,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:13,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:13,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835053734] [2021-08-21 11:53:13,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835053734] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:13,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:13,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:13,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670109697] [2021-08-21 11:53:13,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:13,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:13,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:13,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:13,342 INFO L87 Difference]: Start difference. First operand 3006 states and 8033 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:16,665 INFO L93 Difference]: Finished difference Result 7227 states and 18498 transitions. [2021-08-21 11:53:16,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:53:16,666 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:16,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:16,675 INFO L225 Difference]: With dead ends: 7227 [2021-08-21 11:53:16,676 INFO L226 Difference]: Without dead ends: 7227 [2021-08-21 11:53:16,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2917.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:53:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2021-08-21 11:53:16,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 3012. [2021-08-21 11:53:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3010 states have (on average 2.6737541528239204) internal successors, (8048), 3011 states have internal predecessors, (8048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 8048 transitions. [2021-08-21 11:53:16,750 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 8048 transitions. Word has length 94 [2021-08-21 11:53:16,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:16,750 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 8048 transitions. [2021-08-21 11:53:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:16,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 8048 transitions. [2021-08-21 11:53:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:16,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:16,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:16,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-21 11:53:16,754 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1266223117, now seen corresponding path program 113 times [2021-08-21 11:53:16,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:16,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720013397] [2021-08-21 11:53:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:16,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:17,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:17,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:17,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720013397] [2021-08-21 11:53:17,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720013397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:17,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:17,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:17,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330765721] [2021-08-21 11:53:17,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:17,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:17,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:17,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:17,440 INFO L87 Difference]: Start difference. First operand 3012 states and 8048 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:21,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:21,099 INFO L93 Difference]: Finished difference Result 7401 states and 18843 transitions. [2021-08-21 11:53:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:53:21,099 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:21,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:21,108 INFO L225 Difference]: With dead ends: 7401 [2021-08-21 11:53:21,109 INFO L226 Difference]: Without dead ends: 7401 [2021-08-21 11:53:21,109 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3110.1ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:53:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7401 states. [2021-08-21 11:53:21,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7401 to 3010. [2021-08-21 11:53:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 3008 states have (on average 2.673869680851064) internal successors, (8043), 3009 states have internal predecessors, (8043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 8043 transitions. [2021-08-21 11:53:21,166 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 8043 transitions. Word has length 94 [2021-08-21 11:53:21,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:21,166 INFO L470 AbstractCegarLoop]: Abstraction has 3010 states and 8043 transitions. [2021-08-21 11:53:21,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 8043 transitions. [2021-08-21 11:53:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:21,169 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:21,169 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:21,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-21 11:53:21,169 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:21,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:21,170 INFO L82 PathProgramCache]: Analyzing trace with hash 705577731, now seen corresponding path program 114 times [2021-08-21 11:53:21,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:21,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719718018] [2021-08-21 11:53:21,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:21,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:21,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:21,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719718018] [2021-08-21 11:53:21,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719718018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:21,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:21,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:21,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610658886] [2021-08-21 11:53:21,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:21,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:21,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:21,877 INFO L87 Difference]: Start difference. First operand 3010 states and 8043 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:25,786 INFO L93 Difference]: Finished difference Result 7242 states and 18533 transitions. [2021-08-21 11:53:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:53:25,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:25,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:25,795 INFO L225 Difference]: With dead ends: 7242 [2021-08-21 11:53:25,795 INFO L226 Difference]: Without dead ends: 7242 [2021-08-21 11:53:25,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3424.2ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:53:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2021-08-21 11:53:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 3006. [2021-08-21 11:53:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3004 states have (on average 2.6741011984021306) internal successors, (8033), 3005 states have internal predecessors, (8033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 8033 transitions. [2021-08-21 11:53:25,847 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 8033 transitions. Word has length 94 [2021-08-21 11:53:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:25,847 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 8033 transitions. [2021-08-21 11:53:25,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 8033 transitions. [2021-08-21 11:53:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:25,851 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:25,851 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:25,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-21 11:53:25,851 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 2107148021, now seen corresponding path program 115 times [2021-08-21 11:53:25,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:25,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041803775] [2021-08-21 11:53:25,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:25,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:26,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:26,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041803775] [2021-08-21 11:53:26,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041803775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:26,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:26,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:26,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449576586] [2021-08-21 11:53:26,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:26,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:26,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:26,557 INFO L87 Difference]: Start difference. First operand 3006 states and 8033 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:31,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:31,935 INFO L93 Difference]: Finished difference Result 8860 states and 22687 transitions. [2021-08-21 11:53:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:53:31,935 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:31,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:31,944 INFO L225 Difference]: With dead ends: 8860 [2021-08-21 11:53:31,944 INFO L226 Difference]: Without dead ends: 8860 [2021-08-21 11:53:31,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4604.5ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:53:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2021-08-21 11:53:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 3042. [2021-08-21 11:53:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 3040 states have (on average 2.6779605263157893) internal successors, (8141), 3041 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:32,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 8141 transitions. [2021-08-21 11:53:32,012 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 8141 transitions. Word has length 94 [2021-08-21 11:53:32,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:32,012 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 8141 transitions. [2021-08-21 11:53:32,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 8141 transitions. [2021-08-21 11:53:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:32,015 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:32,015 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:32,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-21 11:53:32,015 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:32,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:32,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1505147213, now seen corresponding path program 116 times [2021-08-21 11:53:32,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:32,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983452562] [2021-08-21 11:53:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:32,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:32,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:32,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983452562] [2021-08-21 11:53:32,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983452562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:32,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:32,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:32,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376741803] [2021-08-21 11:53:32,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:32,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:32,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:32,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:32,719 INFO L87 Difference]: Start difference. First operand 3042 states and 8141 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:37,890 INFO L93 Difference]: Finished difference Result 9009 states and 22926 transitions. [2021-08-21 11:53:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 11:53:37,890 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:37,901 INFO L225 Difference]: With dead ends: 9009 [2021-08-21 11:53:37,901 INFO L226 Difference]: Without dead ends: 9009 [2021-08-21 11:53:37,901 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4513.1ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 11:53:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9009 states. [2021-08-21 11:53:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9009 to 3030. [2021-08-21 11:53:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3028 states have (on average 2.6766842800528403) internal successors, (8105), 3029 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:37,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 8105 transitions. [2021-08-21 11:53:37,960 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 8105 transitions. Word has length 94 [2021-08-21 11:53:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:37,960 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 8105 transitions. [2021-08-21 11:53:37,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 8105 transitions. [2021-08-21 11:53:37,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:37,963 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:37,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:37,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-21 11:53:37,963 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:37,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 131729081, now seen corresponding path program 117 times [2021-08-21 11:53:37,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:37,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875349341] [2021-08-21 11:53:37,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:37,963 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:38,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:38,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875349341] [2021-08-21 11:53:38,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875349341] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:38,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:38,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:38,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889002853] [2021-08-21 11:53:38,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:38,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:38,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:38,689 INFO L87 Difference]: Start difference. First operand 3030 states and 8105 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:42,646 INFO L93 Difference]: Finished difference Result 7980 states and 20444 transitions. [2021-08-21 11:53:42,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:53:42,646 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:42,655 INFO L225 Difference]: With dead ends: 7980 [2021-08-21 11:53:42,655 INFO L226 Difference]: Without dead ends: 7980 [2021-08-21 11:53:42,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3390.6ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:53:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-08-21 11:53:42,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 2982. [2021-08-21 11:53:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 2.671476510067114) internal successors, (7961), 2981 states have internal predecessors, (7961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7961 transitions. [2021-08-21 11:53:42,708 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7961 transitions. Word has length 94 [2021-08-21 11:53:42,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:42,709 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7961 transitions. [2021-08-21 11:53:42,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:42,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7961 transitions. [2021-08-21 11:53:42,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:42,712 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:42,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:42,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-21 11:53:42,712 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:42,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:42,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1682268353, now seen corresponding path program 118 times [2021-08-21 11:53:42,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:42,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562176733] [2021-08-21 11:53:42,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:42,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:43,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:43,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562176733] [2021-08-21 11:53:43,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562176733] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:43,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:43,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:43,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657625741] [2021-08-21 11:53:43,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:43,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:43,421 INFO L87 Difference]: Start difference. First operand 2982 states and 7961 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:46,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:46,641 INFO L93 Difference]: Finished difference Result 7368 states and 18873 transitions. [2021-08-21 11:53:46,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:53:46,642 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:46,652 INFO L225 Difference]: With dead ends: 7368 [2021-08-21 11:53:46,652 INFO L226 Difference]: Without dead ends: 7368 [2021-08-21 11:53:46,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2799.7ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:53:46,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-08-21 11:53:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 2990. [2021-08-21 11:53:46,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2990 states, 2988 states have (on average 2.6710174029451137) internal successors, (7981), 2989 states have internal predecessors, (7981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:46,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 7981 transitions. [2021-08-21 11:53:46,711 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 7981 transitions. Word has length 94 [2021-08-21 11:53:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:46,711 INFO L470 AbstractCegarLoop]: Abstraction has 2990 states and 7981 transitions. [2021-08-21 11:53:46,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 7981 transitions. [2021-08-21 11:53:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:46,714 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:46,714 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] [2021-08-21 11:53:46,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-21 11:53:46,715 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:46,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1110449779, now seen corresponding path program 119 times [2021-08-21 11:53:46,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:46,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760040884] [2021-08-21 11:53:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:46,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:47,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:47,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760040884] [2021-08-21 11:53:47,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760040884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:47,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:47,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:47,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139294595] [2021-08-21 11:53:47,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:47,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:47,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:47,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:47,431 INFO L87 Difference]: Start difference. First operand 2990 states and 7981 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:50,925 INFO L93 Difference]: Finished difference Result 7542 states and 19218 transitions. [2021-08-21 11:53:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:53:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:50,934 INFO L225 Difference]: With dead ends: 7542 [2021-08-21 11:53:50,934 INFO L226 Difference]: Without dead ends: 7542 [2021-08-21 11:53:50,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2993.8ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:53:50,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7542 states. [2021-08-21 11:53:50,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7542 to 2988. [2021-08-21 11:53:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2988 states, 2986 states have (on average 2.67113194909578) internal successors, (7976), 2987 states have internal predecessors, (7976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2988 states to 2988 states and 7976 transitions. [2021-08-21 11:53:50,985 INFO L78 Accepts]: Start accepts. Automaton has 2988 states and 7976 transitions. Word has length 94 [2021-08-21 11:53:50,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:50,986 INFO L470 AbstractCegarLoop]: Abstraction has 2988 states and 7976 transitions. [2021-08-21 11:53:50,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2988 states and 7976 transitions. [2021-08-21 11:53:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:50,989 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:50,989 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:50,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-21 11:53:50,989 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1671095165, now seen corresponding path program 120 times [2021-08-21 11:53:50,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:50,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765265766] [2021-08-21 11:53:50,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:50,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:51,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:51,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765265766] [2021-08-21 11:53:51,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765265766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:51,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:51,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:51,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301311765] [2021-08-21 11:53:51,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:51,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:51,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:51,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:51,699 INFO L87 Difference]: Start difference. First operand 2988 states and 7976 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:55,377 INFO L93 Difference]: Finished difference Result 7593 states and 19332 transitions. [2021-08-21 11:53:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:53:55,377 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:55,387 INFO L225 Difference]: With dead ends: 7593 [2021-08-21 11:53:55,388 INFO L226 Difference]: Without dead ends: 7593 [2021-08-21 11:53:55,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3147.0ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:53:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7593 states. [2021-08-21 11:53:55,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7593 to 2984. [2021-08-21 11:53:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2984 states, 2982 states have (on average 2.671361502347418) internal successors, (7966), 2983 states have internal predecessors, (7966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 7966 transitions. [2021-08-21 11:53:55,461 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 7966 transitions. Word has length 94 [2021-08-21 11:53:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:53:55,461 INFO L470 AbstractCegarLoop]: Abstraction has 2984 states and 7966 transitions. [2021-08-21 11:53:55,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 7966 transitions. [2021-08-21 11:53:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:53:55,464 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:53:55,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:53:55,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-21 11:53:55,464 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:53:55,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:53:55,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2101347749, now seen corresponding path program 121 times [2021-08-21 11:53:55,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:53:55,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109390366] [2021-08-21 11:53:55,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:53:55,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:53:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:53:56,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:53:56,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:53:56,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109390366] [2021-08-21 11:53:56,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109390366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:53:56,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:53:56,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:53:56,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258045130] [2021-08-21 11:53:56,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:53:56,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:53:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:53:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:53:56,185 INFO L87 Difference]: Start difference. First operand 2984 states and 7966 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:53:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:53:59,934 INFO L93 Difference]: Finished difference Result 7396 states and 18936 transitions. [2021-08-21 11:53:59,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:53:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:53:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:53:59,947 INFO L225 Difference]: With dead ends: 7396 [2021-08-21 11:53:59,948 INFO L226 Difference]: Without dead ends: 7396 [2021-08-21 11:53:59,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3257.0ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:53:59,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2021-08-21 11:54:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 2982. [2021-08-21 11:54:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 2.671476510067114) internal successors, (7961), 2981 states have internal predecessors, (7961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:00,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7961 transitions. [2021-08-21 11:54:00,024 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7961 transitions. Word has length 94 [2021-08-21 11:54:00,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:00,024 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7961 transitions. [2021-08-21 11:54:00,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:00,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7961 transitions. [2021-08-21 11:54:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:00,027 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:00,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:00,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-21 11:54:00,027 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1703264693, now seen corresponding path program 122 times [2021-08-21 11:54:00,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:00,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650586746] [2021-08-21 11:54:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:00,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:00,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:00,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650586746] [2021-08-21 11:54:00,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650586746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:00,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:00,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:00,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524255853] [2021-08-21 11:54:00,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:00,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:00,742 INFO L87 Difference]: Start difference. First operand 2982 states and 7961 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:06,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:06,394 INFO L93 Difference]: Finished difference Result 9192 states and 23562 transitions. [2021-08-21 11:54:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:54:06,394 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:06,405 INFO L225 Difference]: With dead ends: 9192 [2021-08-21 11:54:06,405 INFO L226 Difference]: Without dead ends: 9192 [2021-08-21 11:54:06,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4860.4ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:54:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9192 states. [2021-08-21 11:54:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9192 to 3030. [2021-08-21 11:54:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3028 states have (on average 2.6766842800528403) internal successors, (8105), 3029 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 8105 transitions. [2021-08-21 11:54:06,462 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 8105 transitions. Word has length 94 [2021-08-21 11:54:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:06,462 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 8105 transitions. [2021-08-21 11:54:06,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 8105 transitions. [2021-08-21 11:54:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:06,465 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:06,465 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:06,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-21 11:54:06,465 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1101263885, now seen corresponding path program 123 times [2021-08-21 11:54:06,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:06,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985702391] [2021-08-21 11:54:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:06,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:07,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:07,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985702391] [2021-08-21 11:54:07,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985702391] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:07,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:07,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:07,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077202533] [2021-08-21 11:54:07,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:07,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:07,170 INFO L87 Difference]: Start difference. First operand 3030 states and 8105 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:12,720 INFO L93 Difference]: Finished difference Result 9341 states and 23801 transitions. [2021-08-21 11:54:12,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:54:12,721 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:12,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:12,733 INFO L225 Difference]: With dead ends: 9341 [2021-08-21 11:54:12,733 INFO L226 Difference]: Without dead ends: 9341 [2021-08-21 11:54:12,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4748.6ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:54:12,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-08-21 11:54:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 3018. [2021-08-21 11:54:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3016 states have (on average 2.675397877984085) internal successors, (8069), 3017 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:12,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 8069 transitions. [2021-08-21 11:54:12,798 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 8069 transitions. Word has length 94 [2021-08-21 11:54:12,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:12,798 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 8069 transitions. [2021-08-21 11:54:12,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 8069 transitions. [2021-08-21 11:54:12,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:12,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:12,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:12,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-21 11:54:12,802 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -272154247, now seen corresponding path program 124 times [2021-08-21 11:54:12,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:12,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583599439] [2021-08-21 11:54:12,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:12,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:13,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:13,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583599439] [2021-08-21 11:54:13,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583599439] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:13,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:13,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:13,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173214643] [2021-08-21 11:54:13,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:13,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:13,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:13,528 INFO L87 Difference]: Start difference. First operand 3018 states and 8069 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:18,745 INFO L93 Difference]: Finished difference Result 9370 states and 23869 transitions. [2021-08-21 11:54:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 11:54:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:18,757 INFO L225 Difference]: With dead ends: 9370 [2021-08-21 11:54:18,757 INFO L226 Difference]: Without dead ends: 9370 [2021-08-21 11:54:18,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4466.5ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-08-21 11:54:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2021-08-21 11:54:18,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 2994. [2021-08-21 11:54:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.672794117647059) internal successors, (7997), 2993 states have internal predecessors, (7997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:18,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 7997 transitions. [2021-08-21 11:54:18,820 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 7997 transitions. Word has length 94 [2021-08-21 11:54:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:18,820 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 7997 transitions. [2021-08-21 11:54:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 7997 transitions. [2021-08-21 11:54:18,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:18,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:18,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:18,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-21 11:54:18,824 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:18,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:18,824 INFO L82 PathProgramCache]: Analyzing trace with hash 388608987, now seen corresponding path program 125 times [2021-08-21 11:54:18,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:18,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423936831] [2021-08-21 11:54:18,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:18,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:19,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:19,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:19,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423936831] [2021-08-21 11:54:19,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423936831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:19,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:19,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:19,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101425682] [2021-08-21 11:54:19,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:19,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:19,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:19,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:19,536 INFO L87 Difference]: Start difference. First operand 2994 states and 7997 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:23,475 INFO L93 Difference]: Finished difference Result 8132 states and 20830 transitions. [2021-08-21 11:54:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:54:23,475 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:23,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:23,485 INFO L225 Difference]: With dead ends: 8132 [2021-08-21 11:54:23,485 INFO L226 Difference]: Without dead ends: 8132 [2021-08-21 11:54:23,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3394.5ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:54:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2021-08-21 11:54:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 2970. [2021-08-21 11:54:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.6701482479784366) internal successors, (7925), 2969 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7925 transitions. [2021-08-21 11:54:23,538 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7925 transitions. Word has length 94 [2021-08-21 11:54:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:23,538 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7925 transitions. [2021-08-21 11:54:23,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7925 transitions. [2021-08-21 11:54:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:23,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:23,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:23,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-21 11:54:23,542 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:23,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:23,542 INFO L82 PathProgramCache]: Analyzing trace with hash 498424535, now seen corresponding path program 126 times [2021-08-21 11:54:23,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:23,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287970509] [2021-08-21 11:54:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:23,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:24,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:24,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287970509] [2021-08-21 11:54:24,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287970509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:24,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:24,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:24,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454239104] [2021-08-21 11:54:24,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:24,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:24,288 INFO L87 Difference]: Start difference. First operand 2970 states and 7925 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:27,330 INFO L93 Difference]: Finished difference Result 6343 states and 16215 transitions. [2021-08-21 11:54:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:54:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:27,339 INFO L225 Difference]: With dead ends: 6343 [2021-08-21 11:54:27,339 INFO L226 Difference]: Without dead ends: 6343 [2021-08-21 11:54:27,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2702.4ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:54:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2021-08-21 11:54:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 2980. [2021-08-21 11:54:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 2.669576897246474) internal successors, (7950), 2979 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 7950 transitions. [2021-08-21 11:54:27,407 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 7950 transitions. Word has length 94 [2021-08-21 11:54:27,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:27,407 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 7950 transitions. [2021-08-21 11:54:27,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 7950 transitions. [2021-08-21 11:54:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:27,410 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:27,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:27,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-21 11:54:27,411 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1070243109, now seen corresponding path program 127 times [2021-08-21 11:54:27,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:27,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895506831] [2021-08-21 11:54:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:27,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:28,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:28,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895506831] [2021-08-21 11:54:28,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895506831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:28,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:28,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:28,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445894213] [2021-08-21 11:54:28,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:28,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:28,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:28,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:28,144 INFO L87 Difference]: Start difference. First operand 2980 states and 7950 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:31,514 INFO L93 Difference]: Finished difference Result 6517 states and 16560 transitions. [2021-08-21 11:54:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:54:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:31,522 INFO L225 Difference]: With dead ends: 6517 [2021-08-21 11:54:31,522 INFO L226 Difference]: Without dead ends: 6517 [2021-08-21 11:54:31,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2884.4ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:54:31,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2021-08-21 11:54:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 2978. [2021-08-21 11:54:31,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2976 states have (on average 2.669690860215054) internal successors, (7945), 2977 states have internal predecessors, (7945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 7945 transitions. [2021-08-21 11:54:31,573 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 7945 transitions. Word has length 94 [2021-08-21 11:54:31,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:31,574 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 7945 transitions. [2021-08-21 11:54:31,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:31,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 7945 transitions. [2021-08-21 11:54:31,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:31,577 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:31,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:31,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-21 11:54:31,577 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:31,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:31,577 INFO L82 PathProgramCache]: Analyzing trace with hash 509597723, now seen corresponding path program 128 times [2021-08-21 11:54:31,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:31,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637967841] [2021-08-21 11:54:31,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:31,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:32,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:32,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637967841] [2021-08-21 11:54:32,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637967841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:32,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:32,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:32,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399170117] [2021-08-21 11:54:32,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:32,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:32,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:32,302 INFO L87 Difference]: Start difference. First operand 2978 states and 7945 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:35,813 INFO L93 Difference]: Finished difference Result 6568 states and 16674 transitions. [2021-08-21 11:54:35,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:54:35,813 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:35,842 INFO L225 Difference]: With dead ends: 6568 [2021-08-21 11:54:35,842 INFO L226 Difference]: Without dead ends: 6568 [2021-08-21 11:54:35,842 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3010.1ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:54:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2021-08-21 11:54:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 2974. [2021-08-21 11:54:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2972 states have (on average 2.6699192462987886) internal successors, (7935), 2973 states have internal predecessors, (7935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7935 transitions. [2021-08-21 11:54:35,892 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7935 transitions. Word has length 94 [2021-08-21 11:54:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:35,892 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 7935 transitions. [2021-08-21 11:54:35,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7935 transitions. [2021-08-21 11:54:35,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:35,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:35,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:35,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-21 11:54:35,896 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:35,896 INFO L82 PathProgramCache]: Analyzing trace with hash -12926659, now seen corresponding path program 129 times [2021-08-21 11:54:35,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:35,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088100829] [2021-08-21 11:54:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:35,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:36,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:36,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088100829] [2021-08-21 11:54:36,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088100829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:36,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:36,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:36,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061124781] [2021-08-21 11:54:36,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:36,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:36,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:36,588 INFO L87 Difference]: Start difference. First operand 2974 states and 7935 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:40,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:40,226 INFO L93 Difference]: Finished difference Result 6619 states and 16788 transitions. [2021-08-21 11:54:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:54:40,227 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:40,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:40,236 INFO L225 Difference]: With dead ends: 6619 [2021-08-21 11:54:40,236 INFO L226 Difference]: Without dead ends: 6619 [2021-08-21 11:54:40,236 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3125.1ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:54:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2021-08-21 11:54:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 2972. [2021-08-21 11:54:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.67003367003367) internal successors, (7930), 2971 states have internal predecessors, (7930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7930 transitions. [2021-08-21 11:54:40,290 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7930 transitions. Word has length 94 [2021-08-21 11:54:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:40,290 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7930 transitions. [2021-08-21 11:54:40,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7930 transitions. [2021-08-21 11:54:40,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:40,293 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:40,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:40,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-21 11:54:40,293 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:40,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1965765345, now seen corresponding path program 130 times [2021-08-21 11:54:40,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:40,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598416348] [2021-08-21 11:54:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:40,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:41,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:41,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598416348] [2021-08-21 11:54:41,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598416348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:41,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:41,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:41,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528062194] [2021-08-21 11:54:41,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:41,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:41,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:41,011 INFO L87 Difference]: Start difference. First operand 2972 states and 7930 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:44,755 INFO L93 Difference]: Finished difference Result 6386 states and 16311 transitions. [2021-08-21 11:54:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:54:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:44,763 INFO L225 Difference]: With dead ends: 6386 [2021-08-21 11:54:44,763 INFO L226 Difference]: Without dead ends: 6386 [2021-08-21 11:54:44,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3318.0ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:54:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6386 states. [2021-08-21 11:54:44,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6386 to 2970. [2021-08-21 11:54:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.6701482479784366) internal successors, (7925), 2969 states have internal predecessors, (7925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7925 transitions. [2021-08-21 11:54:44,808 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7925 transitions. Word has length 94 [2021-08-21 11:54:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:44,808 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7925 transitions. [2021-08-21 11:54:44,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7925 transitions. [2021-08-21 11:54:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:44,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:44,811 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] [2021-08-21 11:54:44,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-21 11:54:44,811 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1966303785, now seen corresponding path program 131 times [2021-08-21 11:54:44,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:44,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300157286] [2021-08-21 11:54:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:44,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:45,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:45,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300157286] [2021-08-21 11:54:45,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300157286] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:45,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:45,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:45,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930604722] [2021-08-21 11:54:45,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:45,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:45,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:45,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:45,576 INFO L87 Difference]: Start difference. First operand 2970 states and 7925 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:51,370 INFO L93 Difference]: Finished difference Result 6947 states and 17791 transitions. [2021-08-21 11:54:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:54:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:51,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:51,379 INFO L225 Difference]: With dead ends: 6947 [2021-08-21 11:54:51,379 INFO L226 Difference]: Without dead ends: 6947 [2021-08-21 11:54:51,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5091.5ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:54:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6947 states. [2021-08-21 11:54:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6947 to 3030. [2021-08-21 11:54:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3028 states have (on average 2.6766842800528403) internal successors, (8105), 3029 states have internal predecessors, (8105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 8105 transitions. [2021-08-21 11:54:51,428 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 8105 transitions. Word has length 94 [2021-08-21 11:54:51,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:51,428 INFO L470 AbstractCegarLoop]: Abstraction has 3030 states and 8105 transitions. [2021-08-21 11:54:51,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:51,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 8105 transitions. [2021-08-21 11:54:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:51,431 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:51,432 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] [2021-08-21 11:54:51,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-21 11:54:51,432 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:51,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:51,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1726662703, now seen corresponding path program 132 times [2021-08-21 11:54:51,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:51,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260519205] [2021-08-21 11:54:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:51,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:52,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:52,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260519205] [2021-08-21 11:54:52,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260519205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:52,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:52,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:52,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890272418] [2021-08-21 11:54:52,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:52,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:52,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:52,131 INFO L87 Difference]: Start difference. First operand 3030 states and 8105 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:57,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:54:57,844 INFO L93 Difference]: Finished difference Result 7096 states and 18030 transitions. [2021-08-21 11:54:57,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 11:54:57,844 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:54:57,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:54:57,852 INFO L225 Difference]: With dead ends: 7096 [2021-08-21 11:54:57,852 INFO L226 Difference]: Without dead ends: 7096 [2021-08-21 11:54:57,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 4895.7ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 11:54:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7096 states. [2021-08-21 11:54:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7096 to 3018. [2021-08-21 11:54:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 3016 states have (on average 2.675397877984085) internal successors, (8069), 3017 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 8069 transitions. [2021-08-21 11:54:57,899 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 8069 transitions. Word has length 94 [2021-08-21 11:54:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:54:57,899 INFO L470 AbstractCegarLoop]: Abstraction has 3018 states and 8069 transitions. [2021-08-21 11:54:57,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:54:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 8069 transitions. [2021-08-21 11:54:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:54:57,902 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:54:57,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:54:57,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-21 11:54:57,902 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:54:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:54:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash 353244571, now seen corresponding path program 133 times [2021-08-21 11:54:57,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:54:57,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282548418] [2021-08-21 11:54:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:54:57,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:54:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:54:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:54:58,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:54:58,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282548418] [2021-08-21 11:54:58,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282548418] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:54:58,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:54:58,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:54:58,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469564937] [2021-08-21 11:54:58,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:54:58,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:54:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:54:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:54:58,606 INFO L87 Difference]: Start difference. First operand 3018 states and 8069 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:04,040 INFO L93 Difference]: Finished difference Result 7125 states and 18098 transitions. [2021-08-21 11:55:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 11:55:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:04,049 INFO L225 Difference]: With dead ends: 7125 [2021-08-21 11:55:04,049 INFO L226 Difference]: Without dead ends: 7125 [2021-08-21 11:55:04,049 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4681.7ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-08-21 11:55:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2021-08-21 11:55:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 2994. [2021-08-21 11:55:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 2.672794117647059) internal successors, (7997), 2993 states have internal predecessors, (7997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 7997 transitions. [2021-08-21 11:55:04,098 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 7997 transitions. Word has length 94 [2021-08-21 11:55:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:04,098 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 7997 transitions. [2021-08-21 11:55:04,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 7997 transitions. [2021-08-21 11:55:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:04,101 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:04,101 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:04,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-21 11:55:04,101 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1014007805, now seen corresponding path program 134 times [2021-08-21 11:55:04,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:04,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678956253] [2021-08-21 11:55:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:04,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:04,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:04,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:04,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678956253] [2021-08-21 11:55:04,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678956253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:04,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:04,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:04,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239956327] [2021-08-21 11:55:04,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:04,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:04,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:04,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:04,843 INFO L87 Difference]: Start difference. First operand 2994 states and 7997 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:10,175 INFO L93 Difference]: Finished difference Result 7165 states and 18189 transitions. [2021-08-21 11:55:10,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 11:55:10,175 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:10,184 INFO L225 Difference]: With dead ends: 7165 [2021-08-21 11:55:10,184 INFO L226 Difference]: Without dead ends: 7165 [2021-08-21 11:55:10,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4553.4ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 11:55:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-08-21 11:55:10,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 2982. [2021-08-21 11:55:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 2.671476510067114) internal successors, (7961), 2981 states have internal predecessors, (7961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:10,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 7961 transitions. [2021-08-21 11:55:10,238 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 7961 transitions. Word has length 94 [2021-08-21 11:55:10,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:10,238 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 7961 transitions. [2021-08-21 11:55:10,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:10,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 7961 transitions. [2021-08-21 11:55:10,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:10,241 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:10,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:10,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-21 11:55:10,241 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:10,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:10,241 INFO L82 PathProgramCache]: Analyzing trace with hash 410471275, now seen corresponding path program 135 times [2021-08-21 11:55:10,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:10,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454952993] [2021-08-21 11:55:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:10,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:10,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:10,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454952993] [2021-08-21 11:55:10,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454952993] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:10,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:10,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:10,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340896351] [2021-08-21 11:55:10,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:10,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:10,944 INFO L87 Difference]: Start difference. First operand 2982 states and 7961 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:15,029 INFO L93 Difference]: Finished difference Result 5800 states and 14822 transitions. [2021-08-21 11:55:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 11:55:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:15,036 INFO L225 Difference]: With dead ends: 5800 [2021-08-21 11:55:15,036 INFO L226 Difference]: Without dead ends: 5800 [2021-08-21 11:55:15,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3496.6ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 11:55:15,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5800 states. [2021-08-21 11:55:15,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5800 to 2958. [2021-08-21 11:55:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2956 states have (on average 2.668809201623816) internal successors, (7889), 2957 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 7889 transitions. [2021-08-21 11:55:15,082 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 7889 transitions. Word has length 94 [2021-08-21 11:55:15,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:15,082 INFO L470 AbstractCegarLoop]: Abstraction has 2958 states and 7889 transitions. [2021-08-21 11:55:15,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:15,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 7889 transitions. [2021-08-21 11:55:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:15,086 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:15,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:15,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-21 11:55:15,087 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash -73241365, now seen corresponding path program 136 times [2021-08-21 11:55:15,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:15,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883594649] [2021-08-21 11:55:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:15,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:15,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:15,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883594649] [2021-08-21 11:55:15,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883594649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:15,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:15,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:15,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83760115] [2021-08-21 11:55:15,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:15,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:15,865 INFO L87 Difference]: Start difference. First operand 2958 states and 7889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:18,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:18,851 INFO L93 Difference]: Finished difference Result 4336 states and 11047 transitions. [2021-08-21 11:55:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:55:18,852 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:18,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:18,856 INFO L225 Difference]: With dead ends: 4336 [2021-08-21 11:55:18,857 INFO L226 Difference]: Without dead ends: 4336 [2021-08-21 11:55:18,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2582.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:55:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-08-21 11:55:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 2978. [2021-08-21 11:55:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2976 states have (on average 2.6676747311827955) internal successors, (7939), 2977 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:18,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 7939 transitions. [2021-08-21 11:55:18,894 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 7939 transitions. Word has length 94 [2021-08-21 11:55:18,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:18,894 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 7939 transitions. [2021-08-21 11:55:18,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:18,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 7939 transitions. [2021-08-21 11:55:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:18,897 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:18,898 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:18,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-21 11:55:18,898 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash -132271237, now seen corresponding path program 137 times [2021-08-21 11:55:18,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:18,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512571267] [2021-08-21 11:55:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:18,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:19,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:19,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512571267] [2021-08-21 11:55:19,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512571267] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:19,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:19,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:19,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899264567] [2021-08-21 11:55:19,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:19,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:19,635 INFO L87 Difference]: Start difference. First operand 2978 states and 7939 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:22,609 INFO L93 Difference]: Finished difference Result 4653 states and 11688 transitions. [2021-08-21 11:55:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:55:22,609 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:22,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:22,615 INFO L225 Difference]: With dead ends: 4653 [2021-08-21 11:55:22,615 INFO L226 Difference]: Without dead ends: 4653 [2021-08-21 11:55:22,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2569.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:55:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-08-21 11:55:22,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 2980. [2021-08-21 11:55:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 2.6675621222296844) internal successors, (7944), 2979 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 7944 transitions. [2021-08-21 11:55:22,658 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 7944 transitions. Word has length 94 [2021-08-21 11:55:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:22,658 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 7944 transitions. [2021-08-21 11:55:22,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:22,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 7944 transitions. [2021-08-21 11:55:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:22,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:22,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:22,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-21 11:55:22,661 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash 439547337, now seen corresponding path program 138 times [2021-08-21 11:55:22,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:22,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687683449] [2021-08-21 11:55:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:22,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:23,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:23,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687683449] [2021-08-21 11:55:23,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687683449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:23,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:23,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:23,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643760958] [2021-08-21 11:55:23,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:23,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:23,373 INFO L87 Difference]: Start difference. First operand 2980 states and 7944 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:26,424 INFO L93 Difference]: Finished difference Result 4512 states and 11397 transitions. [2021-08-21 11:55:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:55:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:26,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:26,430 INFO L225 Difference]: With dead ends: 4512 [2021-08-21 11:55:26,430 INFO L226 Difference]: Without dead ends: 4512 [2021-08-21 11:55:26,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2692.7ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:55:26,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2021-08-21 11:55:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 2974. [2021-08-21 11:55:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2972 states have (on average 2.667900403768506) internal successors, (7929), 2973 states have internal predecessors, (7929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7929 transitions. [2021-08-21 11:55:26,471 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7929 transitions. Word has length 94 [2021-08-21 11:55:26,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:26,471 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 7929 transitions. [2021-08-21 11:55:26,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:26,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7929 transitions. [2021-08-21 11:55:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:26,474 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:26,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:26,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-21 11:55:26,474 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2028494759, now seen corresponding path program 139 times [2021-08-21 11:55:26,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:26,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37769753] [2021-08-21 11:55:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:26,475 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:27,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:27,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:27,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37769753] [2021-08-21 11:55:27,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37769753] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:27,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:27,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:27,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367457145] [2021-08-21 11:55:27,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:27,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:27,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:27,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:27,183 INFO L87 Difference]: Start difference. First operand 2974 states and 7929 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:30,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:30,167 INFO L93 Difference]: Finished difference Result 4710 states and 11817 transitions. [2021-08-21 11:55:30,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:55:30,167 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:30,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:30,173 INFO L225 Difference]: With dead ends: 4710 [2021-08-21 11:55:30,173 INFO L226 Difference]: Without dead ends: 4710 [2021-08-21 11:55:30,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2535.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:55:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-08-21 11:55:30,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 2980. [2021-08-21 11:55:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2980 states, 2978 states have (on average 2.6675621222296844) internal successors, (7944), 2979 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2980 states to 2980 states and 7944 transitions. [2021-08-21 11:55:30,235 INFO L78 Accepts]: Start accepts. Automaton has 2980 states and 7944 transitions. Word has length 94 [2021-08-21 11:55:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:30,235 INFO L470 AbstractCegarLoop]: Abstraction has 2980 states and 7944 transitions. [2021-08-21 11:55:30,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2980 states and 7944 transitions. [2021-08-21 11:55:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:30,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:30,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:30,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-21 11:55:30,238 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:30,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1694653963, now seen corresponding path program 140 times [2021-08-21 11:55:30,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:30,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680574066] [2021-08-21 11:55:30,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:30,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:30,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:30,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680574066] [2021-08-21 11:55:30,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680574066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:30,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:30,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:30,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756536309] [2021-08-21 11:55:30,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:30,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:30,933 INFO L87 Difference]: Start difference. First operand 2980 states and 7944 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:34,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:34,127 INFO L93 Difference]: Finished difference Result 4884 states and 12162 transitions. [2021-08-21 11:55:34,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:55:34,127 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:34,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:34,132 INFO L225 Difference]: With dead ends: 4884 [2021-08-21 11:55:34,132 INFO L226 Difference]: Without dead ends: 4884 [2021-08-21 11:55:34,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2728.7ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:55:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2021-08-21 11:55:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 2978. [2021-08-21 11:55:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2978 states, 2976 states have (on average 2.6676747311827955) internal successors, (7939), 2977 states have internal predecessors, (7939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 7939 transitions. [2021-08-21 11:55:34,168 INFO L78 Accepts]: Start accepts. Automaton has 2978 states and 7939 transitions. Word has length 94 [2021-08-21 11:55:34,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:34,168 INFO L470 AbstractCegarLoop]: Abstraction has 2978 states and 7939 transitions. [2021-08-21 11:55:34,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2978 states and 7939 transitions. [2021-08-21 11:55:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:34,170 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:34,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:34,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-21 11:55:34,171 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 2039667947, now seen corresponding path program 141 times [2021-08-21 11:55:34,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:34,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034121815] [2021-08-21 11:55:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:34,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:34,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:34,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:34,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034121815] [2021-08-21 11:55:34,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034121815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:34,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:34,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:34,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389171509] [2021-08-21 11:55:34,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:34,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:34,858 INFO L87 Difference]: Start difference. First operand 2978 states and 7939 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:38,184 INFO L93 Difference]: Finished difference Result 4567 states and 11521 transitions. [2021-08-21 11:55:38,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:55:38,185 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:38,190 INFO L225 Difference]: With dead ends: 4567 [2021-08-21 11:55:38,191 INFO L226 Difference]: Without dead ends: 4567 [2021-08-21 11:55:38,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2921.9ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:55:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2021-08-21 11:55:38,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 2966. [2021-08-21 11:55:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6683535762483133) internal successors, (7909), 2965 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7909 transitions. [2021-08-21 11:55:38,234 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7909 transitions. Word has length 94 [2021-08-21 11:55:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:38,234 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7909 transitions. [2021-08-21 11:55:38,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7909 transitions. [2021-08-21 11:55:38,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:38,238 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:38,238 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:38,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-21 11:55:38,238 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash -25487739, now seen corresponding path program 142 times [2021-08-21 11:55:38,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:38,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9622847] [2021-08-21 11:55:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:38,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:38,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:38,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9622847] [2021-08-21 11:55:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9622847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:38,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:38,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:38,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066169056] [2021-08-21 11:55:38,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:38,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:38,978 INFO L87 Difference]: Start difference. First operand 2966 states and 7909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:41,965 INFO L93 Difference]: Finished difference Result 4767 states and 11946 transitions. [2021-08-21 11:55:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:55:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:41,972 INFO L225 Difference]: With dead ends: 4767 [2021-08-21 11:55:41,972 INFO L226 Difference]: Without dead ends: 4767 [2021-08-21 11:55:41,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2553.3ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:55:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4767 states. [2021-08-21 11:55:42,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4767 to 2974. [2021-08-21 11:55:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2974 states, 2972 states have (on average 2.667900403768506) internal successors, (7929), 2973 states have internal predecessors, (7929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2974 states to 2974 states and 7929 transitions. [2021-08-21 11:55:42,031 INFO L78 Accepts]: Start accepts. Automaton has 2974 states and 7929 transitions. Word has length 94 [2021-08-21 11:55:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:42,031 INFO L470 AbstractCegarLoop]: Abstraction has 2974 states and 7929 transitions. [2021-08-21 11:55:42,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 2974 states and 7929 transitions. [2021-08-21 11:55:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:42,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:42,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-21 11:55:42,034 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash 546330835, now seen corresponding path program 143 times [2021-08-21 11:55:42,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:42,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675518388] [2021-08-21 11:55:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:42,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:42,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:42,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675518388] [2021-08-21 11:55:42,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675518388] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:42,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:42,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:42,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213487314] [2021-08-21 11:55:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:42,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:42,756 INFO L87 Difference]: Start difference. First operand 2974 states and 7929 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:45,933 INFO L93 Difference]: Finished difference Result 4941 states and 12291 transitions. [2021-08-21 11:55:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:55:45,933 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:45,939 INFO L225 Difference]: With dead ends: 4941 [2021-08-21 11:55:45,939 INFO L226 Difference]: Without dead ends: 4941 [2021-08-21 11:55:45,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2771.3ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:55:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4941 states. [2021-08-21 11:55:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4941 to 2972. [2021-08-21 11:55:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.668013468013468) internal successors, (7924), 2971 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7924 transitions. [2021-08-21 11:55:45,978 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7924 transitions. Word has length 94 [2021-08-21 11:55:45,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:45,978 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7924 transitions. [2021-08-21 11:55:45,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:45,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7924 transitions. [2021-08-21 11:55:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:45,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:45,981 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] [2021-08-21 11:55:45,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-21 11:55:45,981 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash -14314551, now seen corresponding path program 144 times [2021-08-21 11:55:45,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:45,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517958655] [2021-08-21 11:55:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:45,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:46,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:46,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517958655] [2021-08-21 11:55:46,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517958655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:46,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:46,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:46,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479844832] [2021-08-21 11:55:46,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:46,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:46,680 INFO L87 Difference]: Start difference. First operand 2972 states and 7924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:50,138 INFO L93 Difference]: Finished difference Result 4992 states and 12405 transitions. [2021-08-21 11:55:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:55:50,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:50,144 INFO L225 Difference]: With dead ends: 4992 [2021-08-21 11:55:50,145 INFO L226 Difference]: Without dead ends: 4992 [2021-08-21 11:55:50,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2924.3ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:55:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2021-08-21 11:55:50,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 2968. [2021-08-21 11:55:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2968 states, 2966 states have (on average 2.668240053944707) internal successors, (7914), 2967 states have internal predecessors, (7914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2968 states to 2968 states and 7914 transitions. [2021-08-21 11:55:50,188 INFO L78 Accepts]: Start accepts. Automaton has 2968 states and 7914 transitions. Word has length 94 [2021-08-21 11:55:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:50,188 INFO L470 AbstractCegarLoop]: Abstraction has 2968 states and 7914 transitions. [2021-08-21 11:55:50,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2968 states and 7914 transitions. [2021-08-21 11:55:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:50,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:50,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-21 11:55:50,191 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash -536838933, now seen corresponding path program 145 times [2021-08-21 11:55:50,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:50,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110499613] [2021-08-21 11:55:50,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:50,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:50,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:50,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110499613] [2021-08-21 11:55:50,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110499613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:50,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:50,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:50,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790770153] [2021-08-21 11:55:50,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:50,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:50,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:50,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:50,956 INFO L87 Difference]: Start difference. First operand 2968 states and 7914 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:54,512 INFO L93 Difference]: Finished difference Result 4620 states and 11640 transitions. [2021-08-21 11:55:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:55:54,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:54,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:54,518 INFO L225 Difference]: With dead ends: 4620 [2021-08-21 11:55:54,518 INFO L226 Difference]: Without dead ends: 4620 [2021-08-21 11:55:54,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3106.4ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:55:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2021-08-21 11:55:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 2962. [2021-08-21 11:55:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2962 states, 2960 states have (on average 2.668581081081081) internal successors, (7899), 2961 states have internal predecessors, (7899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 7899 transitions. [2021-08-21 11:55:54,558 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 7899 transitions. Word has length 94 [2021-08-21 11:55:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:54,558 INFO L470 AbstractCegarLoop]: Abstraction has 2962 states and 7899 transitions. [2021-08-21 11:55:54,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 7899 transitions. [2021-08-21 11:55:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:54,562 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:54,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:54,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-21 11:55:54,562 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:54,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:54,562 INFO L82 PathProgramCache]: Analyzing trace with hash 484433343, now seen corresponding path program 146 times [2021-08-21 11:55:54,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:54,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428217775] [2021-08-21 11:55:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:54,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:55,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:55,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428217775] [2021-08-21 11:55:55,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428217775] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:55,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:55,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:55,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584164646] [2021-08-21 11:55:55,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:55,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:55,321 INFO L87 Difference]: Start difference. First operand 2962 states and 7899 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:55:58,311 INFO L93 Difference]: Finished difference Result 4434 states and 11223 transitions. [2021-08-21 11:55:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 11:55:58,311 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:55:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:55:58,318 INFO L225 Difference]: With dead ends: 4434 [2021-08-21 11:55:58,319 INFO L226 Difference]: Without dead ends: 4434 [2021-08-21 11:55:58,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2612.9ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 11:55:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4434 states. [2021-08-21 11:55:58,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4434 to 2972. [2021-08-21 11:55:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2970 states have (on average 2.668013468013468) internal successors, (7924), 2971 states have internal predecessors, (7924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 7924 transitions. [2021-08-21 11:55:58,379 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 7924 transitions. Word has length 94 [2021-08-21 11:55:58,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:55:58,379 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 7924 transitions. [2021-08-21 11:55:58,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:55:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 7924 transitions. [2021-08-21 11:55:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:55:58,384 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:55:58,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:55:58,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-21 11:55:58,384 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:55:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:55:58,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1056251917, now seen corresponding path program 147 times [2021-08-21 11:55:58,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:55:58,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424296554] [2021-08-21 11:55:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:55:58,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:55:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:55:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:55:59,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:55:59,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424296554] [2021-08-21 11:55:59,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424296554] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:55:59,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:55:59,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:55:59,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312304174] [2021-08-21 11:55:59,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:55:59,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:55:59,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:55:59,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:55:59,115 INFO L87 Difference]: Start difference. First operand 2972 states and 7924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:02,201 INFO L93 Difference]: Finished difference Result 4608 states and 11568 transitions. [2021-08-21 11:56:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 11:56:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:56:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:02,207 INFO L225 Difference]: With dead ends: 4608 [2021-08-21 11:56:02,207 INFO L226 Difference]: Without dead ends: 4608 [2021-08-21 11:56:02,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2721.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 11:56:02,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2021-08-21 11:56:02,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 2970. [2021-08-21 11:56:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2968 states have (on average 2.6681266846361185) internal successors, (7919), 2969 states have internal predecessors, (7919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 7919 transitions. [2021-08-21 11:56:02,244 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 7919 transitions. Word has length 94 [2021-08-21 11:56:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:02,244 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 7919 transitions. [2021-08-21 11:56:02,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 7919 transitions. [2021-08-21 11:56:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:56:02,247 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:02,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:02,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-21 11:56:02,247 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:56:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:02,247 INFO L82 PathProgramCache]: Analyzing trace with hash 495606531, now seen corresponding path program 148 times [2021-08-21 11:56:02,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:02,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112193125] [2021-08-21 11:56:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:02,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:02,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:02,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112193125] [2021-08-21 11:56:02,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112193125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:02,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:02,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:56:02,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322641941] [2021-08-21 11:56:02,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:56:02,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:56:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:56:02,956 INFO L87 Difference]: Start difference. First operand 2970 states and 7919 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:06,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:06,375 INFO L93 Difference]: Finished difference Result 4659 states and 11682 transitions. [2021-08-21 11:56:06,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 11:56:06,375 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:56:06,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:06,380 INFO L225 Difference]: With dead ends: 4659 [2021-08-21 11:56:06,380 INFO L226 Difference]: Without dead ends: 4659 [2021-08-21 11:56:06,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2874.1ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 11:56:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2021-08-21 11:56:06,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 2966. [2021-08-21 11:56:06,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2966 states, 2964 states have (on average 2.6683535762483133) internal successors, (7909), 2965 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:06,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2966 states to 2966 states and 7909 transitions. [2021-08-21 11:56:06,416 INFO L78 Accepts]: Start accepts. Automaton has 2966 states and 7909 transitions. Word has length 94 [2021-08-21 11:56:06,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:06,416 INFO L470 AbstractCegarLoop]: Abstraction has 2966 states and 7909 transitions. [2021-08-21 11:56:06,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:06,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2966 states and 7909 transitions. [2021-08-21 11:56:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:56:06,419 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:06,419 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] [2021-08-21 11:56:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-21 11:56:06,419 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:56:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:06,420 INFO L82 PathProgramCache]: Analyzing trace with hash -26917851, now seen corresponding path program 149 times [2021-08-21 11:56:06,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:06,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018740339] [2021-08-21 11:56:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:06,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:07,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:07,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018740339] [2021-08-21 11:56:07,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018740339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:07,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:07,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:56:07,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243577467] [2021-08-21 11:56:07,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:56:07,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:56:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:56:07,148 INFO L87 Difference]: Start difference. First operand 2966 states and 7909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 11:56:10,645 INFO L93 Difference]: Finished difference Result 4710 states and 11796 transitions. [2021-08-21 11:56:10,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 11:56:10,645 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-08-21 11:56:10,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 11:56:10,650 INFO L225 Difference]: With dead ends: 4710 [2021-08-21 11:56:10,651 INFO L226 Difference]: Without dead ends: 4710 [2021-08-21 11:56:10,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3016.0ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 11:56:10,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-08-21 11:56:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 2964. [2021-08-21 11:56:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2964 states, 2962 states have (on average 2.6684672518568533) internal successors, (7904), 2963 states have internal predecessors, (7904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:10,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 7904 transitions. [2021-08-21 11:56:10,693 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 7904 transitions. Word has length 94 [2021-08-21 11:56:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 11:56:10,693 INFO L470 AbstractCegarLoop]: Abstraction has 2964 states and 7904 transitions. [2021-08-21 11:56:10,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-21 11:56:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 7904 transitions. [2021-08-21 11:56:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-08-21 11:56:10,696 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 11:56:10,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 11:56:10,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-21 11:56:10,697 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-21 11:56:10,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 11:56:10,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1951774153, now seen corresponding path program 150 times [2021-08-21 11:56:10,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 11:56:10,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619445051] [2021-08-21 11:56:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 11:56:10,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 11:56:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 11:56:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 11:56:11,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 11:56:11,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619445051] [2021-08-21 11:56:11,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619445051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 11:56:11,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 11:56:11,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-08-21 11:56:11,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070995805] [2021-08-21 11:56:11,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-08-21 11:56:11,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 11:56:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-08-21 11:56:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-08-21 11:56:11,403 INFO L87 Difference]: Start difference. First operand 2964 states and 7904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-08-21 11:56:13,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-21 11:56:13,858 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:13,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-21 11:56:13,859 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). [2021-08-21 11:56:13,860 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:13,868 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:13,869 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-21 11:56:13,869 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-21 11:56:13,869 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-21 11:56:13,874 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 [2021-08-21 11:56:13,882 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 11:56:13,882 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 11:56:13,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:56:13 BasicIcfg [2021-08-21 11:56:13,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 11:56:13,889 INFO L168 Benchmark]: Toolchain (without parser) took 702236.15 ms. Allocated memory was 195.0 MB in the beginning and 791.7 MB in the end (delta: 596.6 MB). Free memory was 157.2 MB in the beginning and 338.7 MB in the end (delta: -181.4 MB). Peak memory consumption was 416.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,890 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 195.0 MB. Free memory was 177.6 MB in the beginning and 177.5 MB in the end (delta: 113.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 11:56:13,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 954.03 ms. Allocated memory is still 195.0 MB. Free memory was 157.0 MB in the beginning and 135.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,891 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.39 ms. Allocated memory is still 195.0 MB. Free memory was 135.6 MB in the beginning and 132.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,892 INFO L168 Benchmark]: Boogie Preprocessor took 53.87 ms. Allocated memory is still 195.0 MB. Free memory was 132.5 MB in the beginning and 129.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,893 INFO L168 Benchmark]: RCFGBuilder took 784.76 ms. Allocated memory is still 195.0 MB. Free memory was 129.9 MB in the beginning and 138.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,894 INFO L168 Benchmark]: TraceAbstraction took 700377.50 ms. Allocated memory was 195.0 MB in the beginning and 791.7 MB in the end (delta: 596.6 MB). Free memory was 138.2 MB in the beginning and 338.7 MB in the end (delta: -200.5 MB). Peak memory consumption was 395.6 MB. Max. memory is 8.0 GB. [2021-08-21 11:56:13,895 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 195.0 MB. Free memory was 177.6 MB in the beginning and 177.5 MB in the end (delta: 113.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 954.03 ms. Allocated memory is still 195.0 MB. Free memory was 157.0 MB in the beginning and 135.6 MB in the end (delta: 21.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.39 ms. Allocated memory is still 195.0 MB. Free memory was 135.6 MB in the beginning and 132.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.87 ms. Allocated memory is still 195.0 MB. Free memory was 132.5 MB in the beginning and 129.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 784.76 ms. Allocated memory is still 195.0 MB. Free memory was 129.9 MB in the beginning and 138.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 700377.50 ms. Allocated memory was 195.0 MB in the beginning and 791.7 MB in the end (delta: 596.6 MB). Free memory was 138.2 MB in the beginning and 338.7 MB in the end (delta: -200.5 MB). Peak memory consumption was 395.6 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: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1711]: 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 (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 1712]: 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 (2964states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (2775 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 148 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 700232.7ms, OverallIterations: 153, TraceHistogramMax: 1, EmptinessCheckTime: 580.1ms, AutomataDifference: 577742.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 177.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43840 SDtfs, 140072 SDslu, 440207 SDs, 0 SdLazy, 201942 SolverSat, 9290 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100191.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7593 GetRequests, 459 SyntacticMatches, 151 SemanticMatches, 6983 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38905 ImplicationChecksByTransitivity, 500496.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5052occurred in iteration=0, InterpolantAutomatonStates: 4315, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 8349.1ms AutomataMinimizationTime, 152 MinimizatonAttempts, 486764 StatesRemovedByMinimization, 151 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 284.3ms SsaConstructionTime, 2085.8ms SatisfiabilityAnalysisTime, 109225.4ms InterpolantComputationTime, 14268 NumberOfCodeBlocks, 14268 NumberOfCodeBlocksAsserted, 153 NumberOfCheckSat, 14115 ConstructedInterpolants, 0 QuantifiedInterpolants, 213326 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 153 InterpolantComputations, 153 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown