/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=DEEPEST --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/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:44:22,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:44:22,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:44:22,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:44:22,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:44:22,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:44:22,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:44:22,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:44:22,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:44:22,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:44:22,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:44:22,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:44:22,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:44:22,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:44:22,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:44:22,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:44:22,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:44:22,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:44:22,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:44:22,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:44:22,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:44:22,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:44:22,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:44:22,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:44:22,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:44:22,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:44:22,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:44:22,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:44:22,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:44:22,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:44:22,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:44:22,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:44:22,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:44:22,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:44:22,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:44:22,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:44:22,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:44:22,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:44:22,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:44:22,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:44:22,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:44:22,921 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 [2020-10-27 14:44:22,951 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:44:22,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:44:22,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:44:22,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:44:22,954 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:44:22,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:44:22,954 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:44:22,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:44:22,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:44:22,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:44:22,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:44:22,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:44:22,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:44:22,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:44:22,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:44:22,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:44:22,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:44:22,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:44:22,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:44:22,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:44:22,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:44:22,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:44:22,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:44:22,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:44:22,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:44:22,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:44:22,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:44:22,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:44:22,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:44:22,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:44:23,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:44:23,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:44:23,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:44:23,404 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:44:23,405 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:44:23,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-10-27 14:44:23,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3286283cc/d897688b72974d23a887051b488a5c36/FLAGe064d13b1 [2020-10-27 14:44:24,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:44:24,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-10-27 14:44:24,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3286283cc/d897688b72974d23a887051b488a5c36/FLAGe064d13b1 [2020-10-27 14:44:24,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3286283cc/d897688b72974d23a887051b488a5c36 [2020-10-27 14:44:24,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:44:24,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:44:24,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:44:24,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:44:24,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:44:24,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b38765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24, skipping insertion in model container [2020-10-27 14:44:24,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:44:24,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:44:24,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:44:24,698 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:44:24,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:44:24,742 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:44:24,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24 WrapperNode [2020-10-27 14:44:24,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:44:24,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:44:24,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:44:24,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:44:24,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (1/1) ... [2020-10-27 14:44:24,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:44:24,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:44:24,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:44:24,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:44:24,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (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 [2020-10-27 14:44:24,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:44:24,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:44:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:44:24,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:44:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 14:44:24,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:44:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:44:24,978 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:44:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:44:24,979 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:44:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:44:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:44:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:44:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:44:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 14:44:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:44:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 14:44:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:44:24,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 14:44:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:44:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:44:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:44:24,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:44:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:44:24,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:44:25,551 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:44:25,551 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:44:25,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:44:25 BoogieIcfgContainer [2020-10-27 14:44:25,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:44:25,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:44:25,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:44:25,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:44:25,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:44:24" (1/3) ... [2020-10-27 14:44:25,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e54f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:44:25, skipping insertion in model container [2020-10-27 14:44:25,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:44:24" (2/3) ... [2020-10-27 14:44:25,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e54f15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:44:25, skipping insertion in model container [2020-10-27 14:44:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:44:25" (3/3) ... [2020-10-27 14:44:25,569 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-10-27 14:44:25,585 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:44:25,592 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:44:25,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:44:25,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:44:25,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:44:25,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:44:25,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:44:25,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:44:25,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:44:25,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:44:25,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:44:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-27 14:44:25,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:44:25,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:25,697 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] [2020-10-27 14:44:25,698 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:25,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1917384497, now seen corresponding path program 1 times [2020-10-27 14:44:25,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:25,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948090951] [2020-10-27 14:44:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:44:26,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-27 14:44:26,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 14:44:26,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:44:26,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:44:26,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:26,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 14:44:26,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:26,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:26,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:26,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 14:44:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:44:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:44:26,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948090951] [2020-10-27 14:44:26,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:44:26,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:44:26,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681554222] [2020-10-27 14:44:26,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:44:26,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:26,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:44:26,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:44:26,525 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-27 14:44:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:26,916 INFO L93 Difference]: Finished difference Result 74 states and 102 transitions. [2020-10-27 14:44:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:44:26,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:44:26,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:26,928 INFO L225 Difference]: With dead ends: 74 [2020-10-27 14:44:26,928 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 14:44:26,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:44:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 14:44:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2020-10-27 14:44:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:44:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-27 14:44:26,982 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-27 14:44:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:26,983 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-27 14:44:26,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:44:26,983 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-27 14:44:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 14:44:26,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:26,985 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] [2020-10-27 14:44:26,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:44:26,985 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1542699897, now seen corresponding path program 1 times [2020-10-27 14:44:26,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:26,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898502908] [2020-10-27 14:44:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 14:44:27,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:44:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-27 14:44:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:44:27,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:27,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 14:44:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:27,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:27,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:44:27,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:27,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:27,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:27,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:27,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:44:27,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:44:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:27,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:44:27,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:44:27,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898502908] [2020-10-27 14:44:27,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:44:27,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 14:44:27,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815851417] [2020-10-27 14:44:27,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:44:27,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:27,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:44:27,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:44:27,792 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-10-27 14:44:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:28,112 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2020-10-27 14:44:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:44:28,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-10-27 14:44:28,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:28,114 INFO L225 Difference]: With dead ends: 61 [2020-10-27 14:44:28,114 INFO L226 Difference]: Without dead ends: 33 [2020-10-27 14:44:28,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:44:28,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-27 14:44:28,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-27 14:44:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 14:44:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-27 14:44:28,127 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 25 [2020-10-27 14:44:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:28,128 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-27 14:44:28,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:44:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-27 14:44:28,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:44:28,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:28,130 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] [2020-10-27 14:44:28,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:44:28,130 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:28,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:28,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1385738581, now seen corresponding path program 1 times [2020-10-27 14:44:28,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:28,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449547928] [2020-10-27 14:44:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:28,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:44:30,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:44:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1843 [2020-10-27 14:44:30,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:44:30,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:44:30,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:44:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:30,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:30,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:30,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:30,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:44:30,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:30,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:30,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:30,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:30,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:30,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 14:44:30,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:30,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:44:30,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:44:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:30,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:44:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:44:30,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449547928] [2020-10-27 14:44:30,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:30,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:44:30,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318622816] [2020-10-27 14:44:30,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:44:30,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:30,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:44:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:44:30,193 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2020-10-27 14:44:30,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:30,535 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-27 14:44:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:44:30,536 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-27 14:44:30,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:30,537 INFO L225 Difference]: With dead ends: 71 [2020-10-27 14:44:30,537 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 14:44:30,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:44:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 14:44:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-27 14:44:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-27 14:44:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-27 14:44:30,547 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2020-10-27 14:44:30,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:30,548 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-27 14:44:30,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:44:30,548 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-27 14:44:30,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 14:44:30,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:30,551 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:44:30,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:44:30,551 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash 414127001, now seen corresponding path program 2 times [2020-10-27 14:44:30,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:30,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482950691] [2020-10-27 14:44:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:30,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:31,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:35,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-27 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:44:35,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:44:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:44:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:44:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:35,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:35,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:35,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:35,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:35,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:44:35,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:35,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:35,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:35,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:35,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 14:44:35,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:44:35,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 14:44:36,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482950691] [2020-10-27 14:44:36,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:36,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:44:36,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342616020] [2020-10-27 14:44:36,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:44:36,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:36,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:44:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:44:36,125 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 15 states. [2020-10-27 14:44:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:36,915 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2020-10-27 14:44:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:44:36,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2020-10-27 14:44:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:36,920 INFO L225 Difference]: With dead ends: 73 [2020-10-27 14:44:36,921 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 14:44:36,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:44:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 14:44:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-27 14:44:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-27 14:44:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-27 14:44:36,938 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 32 [2020-10-27 14:44:36,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:36,939 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-27 14:44:36,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:44:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-27 14:44:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:44:36,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:36,941 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-27 14:44:36,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:44:36,942 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:36,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash -488205430, now seen corresponding path program 1 times [2020-10-27 14:44:36,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:36,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640976689] [2020-10-27 14:44:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:36,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:36,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:39,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:41,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:44:41,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:44:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:44:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:42,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:42,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:42,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:42,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:44:42,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:42,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:42,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:44:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:42,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:42,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 14:44:42,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 14:44:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:44:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:44:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:44:42,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640976689] [2020-10-27 14:44:42,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:42,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:44:42,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237309834] [2020-10-27 14:44:42,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:44:42,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:42,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:44:42,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:44:42,214 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 10 states. [2020-10-27 14:44:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:42,462 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-27 14:44:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:44:42,462 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-27 14:44:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:42,463 INFO L225 Difference]: With dead ends: 83 [2020-10-27 14:44:42,464 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 14:44:42,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:44:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 14:44:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-27 14:44:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-27 14:44:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-27 14:44:42,483 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 37 [2020-10-27 14:44:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:42,484 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-27 14:44:42,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:44:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-27 14:44:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:44:42,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:42,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-27 14:44:42,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:44:42,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:42,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1839912620, now seen corresponding path program 1 times [2020-10-27 14:44:42,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:42,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624859404] [2020-10-27 14:44:42,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:42,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:44:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:44:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 14:44:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:44:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:44:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:44:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:47,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:47,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:47,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 14:44:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 14:44:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:44:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:44:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:47,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:44:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:47,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:44:47,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624859404] [2020-10-27 14:44:47,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:47,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:44:47,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548413359] [2020-10-27 14:44:47,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:44:47,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:47,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:44:47,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:44:47,993 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 13 states. [2020-10-27 14:44:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:48,378 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-10-27 14:44:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:44:48,379 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-27 14:44:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:48,380 INFO L225 Difference]: With dead ends: 99 [2020-10-27 14:44:48,380 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 14:44:48,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:44:48,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 14:44:48,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 53. [2020-10-27 14:44:48,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 14:44:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-27 14:44:48,392 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-27 14:44:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:48,392 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-27 14:44:48,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:44:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-27 14:44:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 14:44:48,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:48,394 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 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] [2020-10-27 14:44:48,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:44:48,394 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash 168080164, now seen corresponding path program 2 times [2020-10-27 14:44:48,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:48,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316214184] [2020-10-27 14:44:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:48,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:48,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:53,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:44:53,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:44:53,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:53,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:53,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:53,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:44:53,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:53,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:53,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:53,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:44:53,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:53,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-27 14:44:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:53,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:53,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:44:53,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316214184] [2020-10-27 14:44:53,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:53,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:44:53,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288881461] [2020-10-27 14:44:53,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:44:53,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:44:53,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:44:53,881 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 15 states. [2020-10-27 14:44:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:44:54,262 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2020-10-27 14:44:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:44:54,263 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-27 14:44:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:44:54,264 INFO L225 Difference]: With dead ends: 112 [2020-10-27 14:44:54,264 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:44:54,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:44:54,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:44:54,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2020-10-27 14:44:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 14:44:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-27 14:44:54,287 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 50 [2020-10-27 14:44:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:44:54,288 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-27 14:44:54,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:44:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-27 14:44:54,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:44:54,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:44:54,289 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 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] [2020-10-27 14:44:54,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:44:54,289 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:44:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:44:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1927391664, now seen corresponding path program 3 times [2020-10-27 14:44:54,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:44:54,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707649104] [2020-10-27 14:44:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:44:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:54,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:54,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:54,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:55,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:55,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:59,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:44:59,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:44:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:44:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:59,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:59,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:44:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:59,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:44:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:44:59,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:44:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:59,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:44:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:44:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:44:59,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:44:59,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:44:59,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:44:59,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:44:59,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:44:59,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:44:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:44:59,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:44:59,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:44:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:44:59,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707649104] [2020-10-27 14:44:59,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:44:59,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:44:59,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112641407] [2020-10-27 14:44:59,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:44:59,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:44:59,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:44:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:44:59,687 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 17 states. [2020-10-27 14:45:00,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:00,266 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2020-10-27 14:45:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:45:00,267 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-27 14:45:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:00,268 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:45:00,268 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 14:45:00,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:45:00,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 14:45:00,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2020-10-27 14:45:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 14:45:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-27 14:45:00,290 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 55 [2020-10-27 14:45:00,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:00,295 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-27 14:45:00,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:45:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-27 14:45:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 14:45:00,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:00,299 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 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] [2020-10-27 14:45:00,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:45:00,299 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:00,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1466602024, now seen corresponding path program 4 times [2020-10-27 14:45:00,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:00,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687725325] [2020-10-27 14:45:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:00,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:01,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:05,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 14:45:05,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 14:45:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 14:45:05,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:45:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 14:45:05,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:45:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:45:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:45:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:05,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:05,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:45:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:05,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:45:05,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:45:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:05,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 84 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:05,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687725325] [2020-10-27 14:45:05,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:05,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:45:05,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056589887] [2020-10-27 14:45:05,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:45:05,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:45:05,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:45:05,802 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 19 states. [2020-10-27 14:45:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:06,318 INFO L93 Difference]: Finished difference Result 138 states and 148 transitions. [2020-10-27 14:45:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:45:06,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 60 [2020-10-27 14:45:06,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:06,320 INFO L225 Difference]: With dead ends: 138 [2020-10-27 14:45:06,320 INFO L226 Difference]: Without dead ends: 98 [2020-10-27 14:45:06,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:45:06,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-27 14:45:06,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 68. [2020-10-27 14:45:06,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:45:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2020-10-27 14:45:06,332 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 60 [2020-10-27 14:45:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:06,333 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2020-10-27 14:45:06,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:45:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2020-10-27 14:45:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 14:45:06,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:06,334 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 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] [2020-10-27 14:45:06,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:45:06,335 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:06,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1879071564, now seen corresponding path program 5 times [2020-10-27 14:45:06,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:06,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96531270] [2020-10-27 14:45:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:06,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 14:45:11,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:11,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:11,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:11,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:11,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:11,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:11,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:11,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 14:45:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 14:45:11,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:45:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 14:45:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:45:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:11,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:11,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:11,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 2 proven. 115 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:11,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96531270] [2020-10-27 14:45:11,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:11,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:45:11,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339699169] [2020-10-27 14:45:11,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:45:11,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:45:11,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:45:11,829 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand 21 states. [2020-10-27 14:45:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:12,357 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2020-10-27 14:45:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:45:12,358 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-27 14:45:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:12,359 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:45:12,360 INFO L226 Difference]: Without dead ends: 108 [2020-10-27 14:45:12,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:45:12,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-27 14:45:12,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 73. [2020-10-27 14:45:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-27 14:45:12,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-10-27 14:45:12,371 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 65 [2020-10-27 14:45:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:12,372 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-10-27 14:45:12,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:45:12,372 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-10-27 14:45:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-27 14:45:12,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:12,373 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 7, 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] [2020-10-27 14:45:12,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:45:12,374 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash 153729324, now seen corresponding path program 6 times [2020-10-27 14:45:12,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:12,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381546600] [2020-10-27 14:45:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:12,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:13,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:13,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:13,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:17,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:17,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-27 14:45:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:45:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:17,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:17,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:17,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:17,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:45:17,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:17,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:17,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:17,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:17,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:45:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:45:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:18,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:18,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:18,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:18,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 2 proven. 151 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:18,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381546600] [2020-10-27 14:45:18,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:18,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:45:18,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775293214] [2020-10-27 14:45:18,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:45:18,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:45:18,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:45:18,362 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 23 states. [2020-10-27 14:45:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:19,046 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2020-10-27 14:45:19,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:45:19,047 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-10-27 14:45:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:19,048 INFO L225 Difference]: With dead ends: 164 [2020-10-27 14:45:19,049 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:45:19,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:45:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:45:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2020-10-27 14:45:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:45:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-27 14:45:19,060 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 70 [2020-10-27 14:45:19,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:19,060 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-27 14:45:19,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:45:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-27 14:45:19,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:45:19,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:19,062 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 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] [2020-10-27 14:45:19,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:45:19,062 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:19,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:19,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1058469960, now seen corresponding path program 7 times [2020-10-27 14:45:19,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:19,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561163939] [2020-10-27 14:45:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:20,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:21,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:24,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:45:24,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:45:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:45:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 14:45:24,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:45:24,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:24,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:24,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:24,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:24,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:24,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:45:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:24,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 14:45:24,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-27 14:45:24,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:24,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 14:45:24,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:45:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:24,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:24,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:24,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:24,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:24,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:24,996 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 2 proven. 192 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:24,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561163939] [2020-10-27 14:45:24,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:24,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:45:24,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159986400] [2020-10-27 14:45:24,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:45:24,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:24,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:45:24,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:45:24,999 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 25 states. [2020-10-27 14:45:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:25,689 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2020-10-27 14:45:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 14:45:25,690 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 75 [2020-10-27 14:45:25,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:25,691 INFO L225 Difference]: With dead ends: 177 [2020-10-27 14:45:25,691 INFO L226 Difference]: Without dead ends: 128 [2020-10-27 14:45:25,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:45:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-27 14:45:25,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 83. [2020-10-27 14:45:25,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-27 14:45:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2020-10-27 14:45:25,703 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 75 [2020-10-27 14:45:25,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:25,703 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2020-10-27 14:45:25,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:45:25,703 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2020-10-27 14:45:25,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-27 14:45:25,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:25,704 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 9, 9, 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] [2020-10-27 14:45:25,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:45:25,705 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:25,705 INFO L82 PathProgramCache]: Analyzing trace with hash -240752592, now seen corresponding path program 8 times [2020-10-27 14:45:25,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:25,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637734471] [2020-10-27 14:45:25,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:25,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:27,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:30,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 14:45:30,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:30,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:30,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:30,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:30,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:31,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:31,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:45:31,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:31,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:45:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:31,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 2 proven. 238 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:31,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637734471] [2020-10-27 14:45:31,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:31,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:45:31,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602334974] [2020-10-27 14:45:31,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:45:31,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:31,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:45:31,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:45:31,599 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand 27 states. [2020-10-27 14:45:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:32,376 INFO L93 Difference]: Finished difference Result 190 states and 204 transitions. [2020-10-27 14:45:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 14:45:32,376 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 80 [2020-10-27 14:45:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:32,378 INFO L225 Difference]: With dead ends: 190 [2020-10-27 14:45:32,378 INFO L226 Difference]: Without dead ends: 138 [2020-10-27 14:45:32,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:45:32,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-27 14:45:32,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 88. [2020-10-27 14:45:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 14:45:32,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-27 14:45:32,400 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 80 [2020-10-27 14:45:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:32,400 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-27 14:45:32,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:45:32,400 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-27 14:45:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:45:32,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:32,401 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 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] [2020-10-27 14:45:32,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:45:32,401 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:32,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:32,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1333924540, now seen corresponding path program 9 times [2020-10-27 14:45:32,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:32,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839257247] [2020-10-27 14:45:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:32,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:36,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:37,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:37,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:45:37,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:37,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:37,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:37,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:37,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 14:45:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:45:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:38,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:38,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:38,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 2 proven. 289 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:38,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839257247] [2020-10-27 14:45:38,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:38,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:45:38,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189288819] [2020-10-27 14:45:38,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:45:38,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:45:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:45:38,632 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 29 states. [2020-10-27 14:45:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:39,434 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2020-10-27 14:45:39,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:45:39,434 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 85 [2020-10-27 14:45:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:39,436 INFO L225 Difference]: With dead ends: 203 [2020-10-27 14:45:39,436 INFO L226 Difference]: Without dead ends: 148 [2020-10-27 14:45:39,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:45:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-27 14:45:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 93. [2020-10-27 14:45:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 14:45:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2020-10-27 14:45:39,449 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 85 [2020-10-27 14:45:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:39,450 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2020-10-27 14:45:39,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:45:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2020-10-27 14:45:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 14:45:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:39,451 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 11, 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] [2020-10-27 14:45:39,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:45:39,451 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1933893428, now seen corresponding path program 10 times [2020-10-27 14:45:39,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:39,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237857925] [2020-10-27 14:45:39,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:39,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:39,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:44,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 14:45:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:44,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:44,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:44,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:44,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:44,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:44,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:44,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:45:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:45:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:45,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:45,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 2 proven. 345 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:45,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237857925] [2020-10-27 14:45:45,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:45,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:45:45,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674678470] [2020-10-27 14:45:45,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:45:45,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:45:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:45:45,882 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand 31 states. [2020-10-27 14:45:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:46,683 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2020-10-27 14:45:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-27 14:45:46,684 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 90 [2020-10-27 14:45:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:46,686 INFO L225 Difference]: With dead ends: 216 [2020-10-27 14:45:46,686 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 14:45:46,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 14:45:46,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 14:45:46,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2020-10-27 14:45:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-27 14:45:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-27 14:45:46,699 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 90 [2020-10-27 14:45:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:46,699 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-27 14:45:46,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:45:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-27 14:45:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 14:45:46,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:46,700 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 12, 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] [2020-10-27 14:45:46,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:45:46,701 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:46,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1471088064, now seen corresponding path program 11 times [2020-10-27 14:45:46,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:46,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325390928] [2020-10-27 14:45:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:51,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-27 14:45:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:45:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:52,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:52,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:52,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:52,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 14:45:52,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:45:52,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-27 14:45:52,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:45:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:45:52,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:45:52,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:53,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:45:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:53,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:45:53,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:53,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 2 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:45:53,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325390928] [2020-10-27 14:45:53,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:45:53,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-27 14:45:53,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913263495] [2020-10-27 14:45:53,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-27 14:45:53,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:45:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-27 14:45:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:45:53,416 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 33 states. [2020-10-27 14:45:54,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:45:54,396 INFO L93 Difference]: Finished difference Result 229 states and 246 transitions. [2020-10-27 14:45:54,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 14:45:54,397 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 95 [2020-10-27 14:45:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:45:54,398 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:45:54,399 INFO L226 Difference]: Without dead ends: 168 [2020-10-27 14:45:54,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=288, Invalid=972, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 14:45:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-27 14:45:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 103. [2020-10-27 14:45:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-27 14:45:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2020-10-27 14:45:54,424 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 95 [2020-10-27 14:45:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:45:54,425 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2020-10-27 14:45:54,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-27 14:45:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2020-10-27 14:45:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:45:54,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:45:54,430 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 13, 13, 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] [2020-10-27 14:45:54,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:45:54,430 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:45:54,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:45:54,431 INFO L82 PathProgramCache]: Analyzing trace with hash 74014264, now seen corresponding path program 12 times [2020-10-27 14:45:54,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:45:54,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223629450] [2020-10-27 14:45:54,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:45:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:54,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-27 14:45:59,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 14:45:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:59,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:45:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:59,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:45:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:45:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:45:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:45:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:45:59,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:45:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:45:59,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:45:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:00,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:00,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-27 14:46:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-27 14:46:00,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:46:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 14:46:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:46:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:00,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 2 proven. 472 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:00,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223629450] [2020-10-27 14:46:00,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:00,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-27 14:46:00,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035841248] [2020-10-27 14:46:00,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-27 14:46:00,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-27 14:46:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:46:00,634 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand 35 states. [2020-10-27 14:46:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:01,663 INFO L93 Difference]: Finished difference Result 242 states and 260 transitions. [2020-10-27 14:46:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:46:01,664 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 100 [2020-10-27 14:46:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:01,665 INFO L225 Difference]: With dead ends: 242 [2020-10-27 14:46:01,666 INFO L226 Difference]: Without dead ends: 178 [2020-10-27 14:46:01,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=307, Invalid=1099, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:46:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-27 14:46:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 108. [2020-10-27 14:46:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:46:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2020-10-27 14:46:01,681 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 100 [2020-10-27 14:46:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:01,682 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2020-10-27 14:46:01,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-27 14:46:01,684 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2020-10-27 14:46:01,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 14:46:01,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:01,685 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 14, 14, 14, 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] [2020-10-27 14:46:01,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:46:01,685 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:01,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1263804612, now seen corresponding path program 13 times [2020-10-27 14:46:01,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:01,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511817612] [2020-10-27 14:46:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:01,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:02,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:05,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:46:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:06,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:06,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:06,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:06,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:06,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:06,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:06,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:06,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:06,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:07,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:46:07,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:46:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:46:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 2 proven. 543 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:08,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511817612] [2020-10-27 14:46:08,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:08,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-27 14:46:08,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995157233] [2020-10-27 14:46:08,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-27 14:46:08,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:08,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-27 14:46:08,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 14:46:08,654 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand 37 states. [2020-10-27 14:46:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:09,801 INFO L93 Difference]: Finished difference Result 255 states and 274 transitions. [2020-10-27 14:46:09,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 14:46:09,805 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 105 [2020-10-27 14:46:09,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:09,806 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:46:09,807 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 14:46:09,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=358, Invalid=1202, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 14:46:09,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 14:46:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 113. [2020-10-27 14:46:09,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-27 14:46:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 115 transitions. [2020-10-27 14:46:09,820 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 115 transitions. Word has length 105 [2020-10-27 14:46:09,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:09,820 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 115 transitions. [2020-10-27 14:46:09,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-27 14:46:09,820 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 115 transitions. [2020-10-27 14:46:09,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 14:46:09,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:09,822 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 15, 15, 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] [2020-10-27 14:46:09,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:46:09,822 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1283971780, now seen corresponding path program 14 times [2020-10-27 14:46:09,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:09,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118223599] [2020-10-27 14:46:09,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:09,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:11,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:14,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:14,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 14:46:14,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 14:46:14,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:15,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:15,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:15,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:15,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:15,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 14:46:15,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:46:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:16,495 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 2 proven. 619 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:16,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118223599] [2020-10-27 14:46:16,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:16,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-27 14:46:16,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258117238] [2020-10-27 14:46:16,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-27 14:46:16,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:16,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-27 14:46:16,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:46:16,498 INFO L87 Difference]: Start difference. First operand 113 states and 115 transitions. Second operand 39 states. [2020-10-27 14:46:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:17,637 INFO L93 Difference]: Finished difference Result 268 states and 288 transitions. [2020-10-27 14:46:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-27 14:46:17,638 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 110 [2020-10-27 14:46:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:17,640 INFO L225 Difference]: With dead ends: 268 [2020-10-27 14:46:17,642 INFO L226 Difference]: Without dead ends: 198 [2020-10-27 14:46:17,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=379, Invalid=1343, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 14:46:17,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-27 14:46:17,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 118. [2020-10-27 14:46:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 14:46:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-27 14:46:17,665 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 110 [2020-10-27 14:46:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:17,667 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-27 14:46:17,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-27 14:46:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-27 14:46:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:46:17,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:17,668 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 16, 16, 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] [2020-10-27 14:46:17,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:46:17,668 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:17,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1985323976, now seen corresponding path program 15 times [2020-10-27 14:46:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:17,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630920924] [2020-10-27 14:46:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:18,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:20,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:22,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:23,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:23,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 14:46:23,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5374 [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:46:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:23,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:23,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:23,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:23,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:24,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:24,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:46:24,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 14:46:24,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:46:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:24,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 14:46:24,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:46:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:24,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:24,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:24,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:24,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 2 proven. 700 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:24,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630920924] [2020-10-27 14:46:24,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:24,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-27 14:46:24,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757426044] [2020-10-27 14:46:24,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-27 14:46:24,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:24,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-27 14:46:24,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:46:24,840 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 41 states. [2020-10-27 14:46:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:25,950 INFO L93 Difference]: Finished difference Result 281 states and 302 transitions. [2020-10-27 14:46:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:46:25,950 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 115 [2020-10-27 14:46:25,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:25,954 INFO L225 Difference]: With dead ends: 281 [2020-10-27 14:46:25,954 INFO L226 Difference]: Without dead ends: 208 [2020-10-27 14:46:25,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=418, Invalid=1474, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:46:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-27 14:46:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 123. [2020-10-27 14:46:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-27 14:46:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-27 14:46:25,978 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 115 [2020-10-27 14:46:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:25,978 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-27 14:46:25,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-27 14:46:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-27 14:46:25,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 14:46:25,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:25,980 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 17, 17, 17, 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] [2020-10-27 14:46:25,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:46:25,980 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:25,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:25,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1428851648, now seen corresponding path program 16 times [2020-10-27 14:46:25,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:25,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283765113] [2020-10-27 14:46:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:26,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:30,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5402 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 14:46:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:31,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:31,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:31,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:32,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:32,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 14:46:32,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:32,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 616 [2020-10-27 14:46:32,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:46:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:32,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 14:46:32,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:33,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:46:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:33,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 2 proven. 786 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:33,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283765113] [2020-10-27 14:46:33,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:33,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-27 14:46:33,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636866506] [2020-10-27 14:46:33,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-27 14:46:33,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:33,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-27 14:46:33,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=426, Invalid=1380, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:46:33,971 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 43 states. [2020-10-27 14:46:35,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:35,241 INFO L93 Difference]: Finished difference Result 294 states and 316 transitions. [2020-10-27 14:46:35,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-27 14:46:35,242 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 120 [2020-10-27 14:46:35,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:35,244 INFO L225 Difference]: With dead ends: 294 [2020-10-27 14:46:35,244 INFO L226 Difference]: Without dead ends: 218 [2020-10-27 14:46:35,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 14:46:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-27 14:46:35,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 128. [2020-10-27 14:46:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-27 14:46:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-27 14:46:35,260 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 120 [2020-10-27 14:46:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:35,260 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-27 14:46:35,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-27 14:46:35,260 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-27 14:46:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:46:35,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:35,262 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 18, 18, 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] [2020-10-27 14:46:35,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:46:35,262 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:35,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2103980340, now seen corresponding path program 17 times [2020-10-27 14:46:35,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:35,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633832376] [2020-10-27 14:46:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:35,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:36,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:37,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:46:40,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:40,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:41,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:46:41,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:46:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 2 proven. 877 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:42,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633832376] [2020-10-27 14:46:42,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:42,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-27 14:46:42,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504002940] [2020-10-27 14:46:42,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-27 14:46:42,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:42,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-27 14:46:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2020-10-27 14:46:42,249 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 45 states. [2020-10-27 14:46:43,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:43,706 INFO L93 Difference]: Finished difference Result 307 states and 330 transitions. [2020-10-27 14:46:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:46:43,708 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 125 [2020-10-27 14:46:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:43,710 INFO L225 Difference]: With dead ends: 307 [2020-10-27 14:46:43,710 INFO L226 Difference]: Without dead ends: 228 [2020-10-27 14:46:43,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 14:46:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-27 14:46:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 133. [2020-10-27 14:46:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-27 14:46:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-27 14:46:43,729 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 125 [2020-10-27 14:46:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:43,729 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-27 14:46:43,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-27 14:46:43,729 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-27 14:46:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 14:46:43,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:43,731 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 19, 19, 19, 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] [2020-10-27 14:46:43,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:46:43,731 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:43,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1260025020, now seen corresponding path program 18 times [2020-10-27 14:46:43,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:43,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256235564] [2020-10-27 14:46:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5548 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-27 14:46:49,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 14:46:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:49,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:49,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:46:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:50,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 14:46:50,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:51,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:46:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:51,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:51,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:51,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:46:51,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:51,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:46:51,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:46:51,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:51,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 978 backedges. 2 proven. 973 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:46:51,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256235564] [2020-10-27 14:46:51,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:46:51,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-27 14:46:51,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032011230] [2020-10-27 14:46:51,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-27 14:46:51,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:46:51,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-27 14:46:51,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:46:51,460 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 47 states. [2020-10-27 14:46:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:46:52,917 INFO L93 Difference]: Finished difference Result 320 states and 344 transitions. [2020-10-27 14:46:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-27 14:46:52,918 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 130 [2020-10-27 14:46:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:46:52,920 INFO L225 Difference]: With dead ends: 320 [2020-10-27 14:46:52,920 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 14:46:52,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=547, Invalid=1903, Unknown=0, NotChecked=0, Total=2450 [2020-10-27 14:46:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 14:46:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 138. [2020-10-27 14:46:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-27 14:46:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-27 14:46:52,938 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 130 [2020-10-27 14:46:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:46:52,938 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-27 14:46:52,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-27 14:46:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-27 14:46:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 14:46:52,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:46:52,940 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 20, 20, 20, 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] [2020-10-27 14:46:52,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:46:52,941 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:46:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:46:52,941 INFO L82 PathProgramCache]: Analyzing trace with hash 67182128, now seen corresponding path program 19 times [2020-10-27 14:46:52,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:46:52,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271798099] [2020-10-27 14:46:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:46:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:53,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:57,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:46:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-27 14:46:57,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:46:57,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:46:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:58,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:58,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:46:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:46:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:46:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:46:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:46:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:46:58,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:58,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 792 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:46:59,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:01,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:47:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:01,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:01,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 2 proven. 1074 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:01,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271798099] [2020-10-27 14:47:01,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:01,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-27 14:47:01,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054913090] [2020-10-27 14:47:01,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-27 14:47:01,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:01,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-27 14:47:01,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:47:01,267 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 49 states. [2020-10-27 14:47:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:02,928 INFO L93 Difference]: Finished difference Result 333 states and 358 transitions. [2020-10-27 14:47:02,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 14:47:02,929 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 135 [2020-10-27 14:47:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:02,931 INFO L225 Difference]: With dead ends: 333 [2020-10-27 14:47:02,931 INFO L226 Difference]: Without dead ends: 248 [2020-10-27 14:47:02,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=616, Invalid=2036, Unknown=0, NotChecked=0, Total=2652 [2020-10-27 14:47:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-27 14:47:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 143. [2020-10-27 14:47:02,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 14:47:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-27 14:47:02,951 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 135 [2020-10-27 14:47:02,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:02,952 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-27 14:47:02,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-27 14:47:02,952 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-27 14:47:02,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:47:02,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:02,953 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 21, 21, 21, 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] [2020-10-27 14:47:02,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:47:02,954 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:02,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:02,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1072911800, now seen corresponding path program 20 times [2020-10-27 14:47:02,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:02,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751011128] [2020-10-27 14:47:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:05,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:06,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:08,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:08,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:47:08,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:47:08,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5733 [2020-10-27 14:47:08,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:47:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 14:47:08,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 14:47:08,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:09,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:09,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:09,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:09,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:09,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:09,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:47:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:47:10,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:47:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:47:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:12,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 2 proven. 1180 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:12,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751011128] [2020-10-27 14:47:12,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:12,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-27 14:47:12,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393624199] [2020-10-27 14:47:12,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-27 14:47:12,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:12,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-27 14:47:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=606, Invalid=1944, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:47:12,136 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 51 states. [2020-10-27 14:47:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:13,850 INFO L93 Difference]: Finished difference Result 346 states and 372 transitions. [2020-10-27 14:47:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-27 14:47:13,851 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 140 [2020-10-27 14:47:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:13,853 INFO L225 Difference]: With dead ends: 346 [2020-10-27 14:47:13,853 INFO L226 Difference]: Without dead ends: 258 [2020-10-27 14:47:13,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=666, Invalid=2196, Unknown=0, NotChecked=0, Total=2862 [2020-10-27 14:47:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-27 14:47:13,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 148. [2020-10-27 14:47:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-27 14:47:13,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-27 14:47:13,874 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 140 [2020-10-27 14:47:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:13,874 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-27 14:47:13,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-27 14:47:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-27 14:47:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 14:47:13,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:13,876 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 22, 22, 22, 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] [2020-10-27 14:47:13,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:47:13,876 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:13,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:13,877 INFO L82 PathProgramCache]: Analyzing trace with hash 730915628, now seen corresponding path program 21 times [2020-10-27 14:47:13,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:13,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096787392] [2020-10-27 14:47:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:13,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:13,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:14,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:18,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:18,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 14:47:18,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:47:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:47:18,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:47:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 14:47:18,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 14:47:18,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:19,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:19,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:19,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:19,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:19,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:19,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:19,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:19,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:47:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:19,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:19,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:20,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:47:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:47:20,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 14:47:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:22,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 14:47:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:22,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:22,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 2 proven. 1291 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:22,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096787392] [2020-10-27 14:47:22,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:22,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-27 14:47:22,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163364494] [2020-10-27 14:47:22,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-27 14:47:22,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:22,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-27 14:47:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=656, Invalid=2100, Unknown=0, NotChecked=0, Total=2756 [2020-10-27 14:47:22,611 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 53 states. [2020-10-27 14:47:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:24,227 INFO L93 Difference]: Finished difference Result 359 states and 386 transitions. [2020-10-27 14:47:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-27 14:47:24,228 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 145 [2020-10-27 14:47:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:24,231 INFO L225 Difference]: With dead ends: 359 [2020-10-27 14:47:24,231 INFO L226 Difference]: Without dead ends: 268 [2020-10-27 14:47:24,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=718, Invalid=2362, Unknown=0, NotChecked=0, Total=3080 [2020-10-27 14:47:24,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-27 14:47:24,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 153. [2020-10-27 14:47:24,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-27 14:47:24,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2020-10-27 14:47:24,253 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 145 [2020-10-27 14:47:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:24,253 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2020-10-27 14:47:24,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-27 14:47:24,253 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2020-10-27 14:47:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 14:47:24,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:24,254 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 23, 23, 23, 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] [2020-10-27 14:47:24,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:47:24,254 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:24,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1655640396, now seen corresponding path program 22 times [2020-10-27 14:47:24,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:24,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850002424] [2020-10-27 14:47:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:30,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6124 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 14:47:30,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:30,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:30,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:31,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:47:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:31,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:31,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:47:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-27 14:47:31,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:47:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:47:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:47:31,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:47:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:33,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:33,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 2 proven. 1407 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:33,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850002424] [2020-10-27 14:47:33,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:33,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-27 14:47:33,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821558378] [2020-10-27 14:47:33,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-27 14:47:33,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-27 14:47:33,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2262, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:47:33,321 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 55 states. [2020-10-27 14:47:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:35,144 INFO L93 Difference]: Finished difference Result 372 states and 400 transitions. [2020-10-27 14:47:35,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-27 14:47:35,145 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 150 [2020-10-27 14:47:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:35,147 INFO L225 Difference]: With dead ends: 372 [2020-10-27 14:47:35,147 INFO L226 Difference]: Without dead ends: 278 [2020-10-27 14:47:35,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=747, Invalid=2559, Unknown=0, NotChecked=0, Total=3306 [2020-10-27 14:47:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-27 14:47:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 158. [2020-10-27 14:47:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-27 14:47:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-10-27 14:47:35,171 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 150 [2020-10-27 14:47:35,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:35,172 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-10-27 14:47:35,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-27 14:47:35,172 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-10-27 14:47:35,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 14:47:35,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:35,173 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 24, 24, 24, 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] [2020-10-27 14:47:35,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:47:35,173 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:35,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:35,174 INFO L82 PathProgramCache]: Analyzing trace with hash 406011944, now seen corresponding path program 23 times [2020-10-27 14:47:35,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:35,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982422443] [2020-10-27 14:47:35,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:35,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:35,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:39,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5125 [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:47:40,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 14:47:40,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:47:40,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:40,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:40,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:40,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:47:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:41,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:47:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:41,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:41,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 14:47:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:43,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 14:47:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:43,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1533 backedges. 2 proven. 1528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:43,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982422443] [2020-10-27 14:47:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-27 14:47:43,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363506715] [2020-10-27 14:47:43,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-27 14:47:43,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-27 14:47:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=762, Invalid=2430, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 14:47:43,546 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 57 states. [2020-10-27 14:47:45,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:47:45,379 INFO L93 Difference]: Finished difference Result 385 states and 414 transitions. [2020-10-27 14:47:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-27 14:47:45,380 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 155 [2020-10-27 14:47:45,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:47:45,382 INFO L225 Difference]: With dead ends: 385 [2020-10-27 14:47:45,382 INFO L226 Difference]: Without dead ends: 288 [2020-10-27 14:47:45,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2020-10-27 14:47:45,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-27 14:47:45,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 163. [2020-10-27 14:47:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-27 14:47:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-10-27 14:47:45,405 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 155 [2020-10-27 14:47:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:47:45,406 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-10-27 14:47:45,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-27 14:47:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-10-27 14:47:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 14:47:45,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:47:45,407 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 25, 25, 25, 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] [2020-10-27 14:47:45,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:47:45,407 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:47:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:47:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1597046864, now seen corresponding path program 24 times [2020-10-27 14:47:45,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:47:45,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968774939] [2020-10-27 14:47:45,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:47:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:45,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5581 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 14:47:51,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:51,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:47:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:51,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:47:51,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:51,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:47:51,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:47:51,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:51,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:51,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 14:47:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:52,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:52,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 14:47:52,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:47:52,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-27 14:47:52,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:52,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 14:47:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:47:52,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 14:47:52,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:55,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:47:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:47:55,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:47:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:47:55,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:47:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:47:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1659 backedges. 2 proven. 1654 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:47:55,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968774939] [2020-10-27 14:47:55,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:47:55,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-27 14:47:55,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168460971] [2020-10-27 14:47:55,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-27 14:47:55,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:47:55,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-27 14:47:55,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2020-10-27 14:47:55,663 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 59 states.