/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:17:07,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:17:07,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:17:07,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:17:07,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:17:07,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:17:07,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:17:07,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:17:07,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:17:07,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:17:07,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:17:07,592 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:17:07,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:17:07,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:17:07,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:17:07,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:17:07,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:17:07,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:17:07,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:17:07,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:17:07,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:17:07,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:17:07,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:17:07,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:17:07,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:17:07,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:17:07,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:17:07,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:17:07,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:17:07,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:17:07,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:17:07,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:17:07,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:17:07,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:17:07,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:17:07,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:17:07,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:17:07,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:17:07,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:17:07,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:17:07,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:17:07,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:17:07,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:17:07,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:17:07,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:17:07,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:17:07,705 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:17:07,706 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:17:07,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:17:07,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:17:07,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:17:07,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:17:07,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:17:07,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:17:07,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:17:07,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:17:07,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:17:07,708 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:17:07,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:17:07,708 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:17:07,708 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:17:07,709 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:17:07,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:17:07,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:17:07,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:17:07,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:17:07,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:17:07,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:17:07,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:17:07,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:17:07,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:17:07,711 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:17:08,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:17:08,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:17:08,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:17:08,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:17:08,094 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:17:08,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label26.c [2020-10-26 21:17:08,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a76f8c66/96fb145db3614c06880da407d843403c/FLAG15559b91d [2020-10-26 21:17:09,290 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:17:09,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label26.c [2020-10-26 21:17:09,352 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a76f8c66/96fb145db3614c06880da407d843403c/FLAG15559b91d [2020-10-26 21:17:09,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4a76f8c66/96fb145db3614c06880da407d843403c [2020-10-26 21:17:09,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:17:09,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:17:09,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:17:09,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:17:09,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:17:09,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:17:09" (1/1) ... [2020-10-26 21:17:09,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d999d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:09, skipping insertion in model container [2020-10-26 21:17:09,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:17:09" (1/1) ... [2020-10-26 21:17:09,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:17:09,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:17:12,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:17:12,037 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:17:13,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:17:13,281 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:17:13,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13 WrapperNode [2020-10-26 21:17:13,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:17:13,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:17:13,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:17:13,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:17:13,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... [2020-10-26 21:17:13,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:17:13,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:17:13,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:17:13,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:17:13,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:17:14,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:17:14,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:17:14,007 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:17:14,008 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:17:14,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:17:14,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:17:14,009 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:17:14,010 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:17:14,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:17:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:17:23,955 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:17:23,956 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:17:23,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:23 BoogieIcfgContainer [2020-10-26 21:17:23,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:17:23,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:17:23,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:17:23,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:17:23,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:17:09" (1/3) ... [2020-10-26 21:17:23,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:23, skipping insertion in model container [2020-10-26 21:17:23,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:17:13" (2/3) ... [2020-10-26 21:17:23,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5773d4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:17:23, skipping insertion in model container [2020-10-26 21:17:23,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:17:23" (3/3) ... [2020-10-26 21:17:23,971 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label26.c [2020-10-26 21:17:23,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:17:23,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:17:24,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:17:24,041 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:17:24,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:17:24,042 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:17:24,042 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:17:24,042 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:17:24,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:17:24,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:17:24,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:17:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:17:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1671 [2020-10-26 21:17:24,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:24,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:17:24,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:24,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:24,242 INFO L82 PathProgramCache]: Analyzing trace with hash -690542625, now seen corresponding path program 1 times [2020-10-26 21:17:24,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:24,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772318160] [2020-10-26 21:17:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:30,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:30,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1694 [2020-10-26 21:17:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-26 21:17:30,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:17:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:17:30,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1685 [2020-10-26 21:17:30,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:17:32,300 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-26 21:17:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:17:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:32,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:32,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:17:32,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:17:32,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:17:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:17:32,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:17:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:17:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:17:32,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:17:32,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:17:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:17:35,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772318160] [2020-10-26 21:17:35,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:17:35,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:17:35,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871908607] [2020-10-26 21:17:35,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:17:35,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:17:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:17:35,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:17:35,777 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:17:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:17:58,348 INFO L93 Difference]: Finished difference Result 6423 states and 12038 transitions. [2020-10-26 21:17:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:17:58,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1670 [2020-10-26 21:17:58,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:17:58,422 INFO L225 Difference]: With dead ends: 6423 [2020-10-26 21:17:58,423 INFO L226 Difference]: Without dead ends: 4133 [2020-10-26 21:17:58,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:17:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2020-10-26 21:17:58,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 4046. [2020-10-26 21:17:58,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4046 states. [2020-10-26 21:17:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 6837 transitions. [2020-10-26 21:17:58,672 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 6837 transitions. Word has length 1670 [2020-10-26 21:17:58,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:17:58,677 INFO L481 AbstractCegarLoop]: Abstraction has 4046 states and 6837 transitions. [2020-10-26 21:17:58,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:17:58,677 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 6837 transitions. [2020-10-26 21:17:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2020-10-26 21:17:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:17:58,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:17:58,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:17:58,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:17:58,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:17:58,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1694881189, now seen corresponding path program 1 times [2020-10-26 21:17:58,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:17:58,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481741714] [2020-10-26 21:17:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:17:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:17:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:17:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:04,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:04,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1708 [2020-10-26 21:18:04,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:18:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 21:18:04,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:04,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:18:04,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:18:04,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:04,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:18:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:04,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:04,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:04,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-26 21:18:04,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:04,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:18:04,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:04,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-26 21:18:04,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:18:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:06,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481741714] [2020-10-26 21:18:06,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:06,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:18:06,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936434494] [2020-10-26 21:18:06,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:18:06,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:18:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:18:06,864 INFO L87 Difference]: Start difference. First operand 4046 states and 6837 transitions. Second operand 7 states. [2020-10-26 21:18:35,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:18:35,196 INFO L93 Difference]: Finished difference Result 11800 states and 20162 transitions. [2020-10-26 21:18:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:18:35,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1682 [2020-10-26 21:18:35,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:18:35,245 INFO L225 Difference]: With dead ends: 11800 [2020-10-26 21:18:35,245 INFO L226 Difference]: Without dead ends: 7760 [2020-10-26 21:18:35,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:18:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7760 states. [2020-10-26 21:18:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7760 to 7667. [2020-10-26 21:18:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7667 states. [2020-10-26 21:18:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7667 states to 7667 states and 11696 transitions. [2020-10-26 21:18:35,497 INFO L78 Accepts]: Start accepts. Automaton has 7667 states and 11696 transitions. Word has length 1682 [2020-10-26 21:18:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:18:35,498 INFO L481 AbstractCegarLoop]: Abstraction has 7667 states and 11696 transitions. [2020-10-26 21:18:35,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:18:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7667 states and 11696 transitions. [2020-10-26 21:18:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-26 21:18:35,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:18:35,629 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:18:35,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:18:35,629 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:18:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:18:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1388352411, now seen corresponding path program 1 times [2020-10-26 21:18:35,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:18:35,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127361195] [2020-10-26 21:18:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:18:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:36,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:36,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:18:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-26 21:18:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:41,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:18:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:41,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:41,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:18:41,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:41,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:18:41,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:18:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:18:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:18:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:41,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:18:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:18:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:18:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:18:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-26 21:18:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-26 21:18:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:18:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:18:43,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127361195] [2020-10-26 21:18:43,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:18:43,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:18:43,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577249400] [2020-10-26 21:18:43,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:18:43,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:18:43,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:18:43,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:18:43,233 INFO L87 Difference]: Start difference. First operand 7667 states and 11696 transitions. Second operand 8 states. [2020-10-26 21:19:32,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:19:32,924 INFO L93 Difference]: Finished difference Result 30181 states and 48309 transitions. [2020-10-26 21:19:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:19:32,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1702 [2020-10-26 21:19:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:19:33,033 INFO L225 Difference]: With dead ends: 30181 [2020-10-26 21:19:33,033 INFO L226 Difference]: Without dead ends: 22520 [2020-10-26 21:19:33,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:19:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22520 states. [2020-10-26 21:19:33,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22520 to 22474. [2020-10-26 21:19:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22474 states. [2020-10-26 21:19:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22474 states to 22474 states and 31995 transitions. [2020-10-26 21:19:33,717 INFO L78 Accepts]: Start accepts. Automaton has 22474 states and 31995 transitions. Word has length 1702 [2020-10-26 21:19:33,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:19:33,721 INFO L481 AbstractCegarLoop]: Abstraction has 22474 states and 31995 transitions. [2020-10-26 21:19:33,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:19:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22474 states and 31995 transitions. [2020-10-26 21:19:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1711 [2020-10-26 21:19:33,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:19:33,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:19:33,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:19:33,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:19:33,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:19:33,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1112344914, now seen corresponding path program 1 times [2020-10-26 21:19:33,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:19:33,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306959448] [2020-10-26 21:19:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:19:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:39,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:39,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1736 [2020-10-26 21:19:39,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:19:39,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-26 21:19:39,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:39,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:19:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:19:39,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-26 21:19:39,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:19:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:39,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:19:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:19:39,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:19:39,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:39,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:19:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:19:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:19:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:19:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 21:19:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:19:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 21:19:39,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:19:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:19:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:19:39,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 21:19:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:19:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:19:40,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306959448] [2020-10-26 21:19:40,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:19:40,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:19:40,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862347065] [2020-10-26 21:19:41,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:19:41,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:19:41,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:19:41,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:19:41,001 INFO L87 Difference]: Start difference. First operand 22474 states and 31995 transitions. Second operand 7 states. [2020-10-26 21:20:13,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:20:13,515 INFO L93 Difference]: Finished difference Result 68773 states and 113722 transitions. [2020-10-26 21:20:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:20:13,517 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1710 [2020-10-26 21:20:13,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:20:13,772 INFO L225 Difference]: With dead ends: 68773 [2020-10-26 21:20:13,773 INFO L226 Difference]: Without dead ends: 46305 [2020-10-26 21:20:13,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:20:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46305 states. [2020-10-26 21:20:15,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46305 to 45430. [2020-10-26 21:20:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45430 states. [2020-10-26 21:20:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45430 states to 45430 states and 62980 transitions. [2020-10-26 21:20:15,583 INFO L78 Accepts]: Start accepts. Automaton has 45430 states and 62980 transitions. Word has length 1710 [2020-10-26 21:20:15,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:20:15,584 INFO L481 AbstractCegarLoop]: Abstraction has 45430 states and 62980 transitions. [2020-10-26 21:20:15,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:20:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 45430 states and 62980 transitions. [2020-10-26 21:20:15,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-26 21:20:15,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:20:15,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:20:15,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:20:15,747 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:20:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:20:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash 358655341, now seen corresponding path program 1 times [2020-10-26 21:20:15,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:20:15,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540973455] [2020-10-26 21:20:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:20:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-26 21:20:20,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:20:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:20:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:20:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:20:20,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-26 21:20:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:21,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:20:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:21,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:20:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:20:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:20:21,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:20:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:20:21,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:20:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:20:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:20:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:20:21,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:20:21,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:20:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:20:22,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540973455] [2020-10-26 21:20:22,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:20:22,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:20:22,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047977502] [2020-10-26 21:20:22,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:20:22,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:20:22,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:20:22,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:20:22,732 INFO L87 Difference]: Start difference. First operand 45430 states and 62980 transitions. Second operand 7 states. [2020-10-26 21:20:49,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:20:49,797 INFO L93 Difference]: Finished difference Result 112686 states and 156931 transitions. [2020-10-26 21:20:49,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 21:20:49,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1711 [2020-10-26 21:20:49,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:20:50,022 INFO L225 Difference]: With dead ends: 112686 [2020-10-26 21:20:50,022 INFO L226 Difference]: Without dead ends: 67262 [2020-10-26 21:20:50,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:20:50,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67262 states.