/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:32:12,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:32:12,763 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:32:12,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:32:12,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:32:12,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:32:12,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:32:12,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:32:12,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:32:12,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:32:12,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:32:12,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:32:12,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:32:12,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:32:12,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:32:12,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:32:12,858 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:32:12,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:32:12,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:32:12,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:32:12,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:32:12,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:32:12,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:32:12,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:32:12,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:32:12,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:32:12,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:32:12,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:32:12,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:32:12,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:32:12,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:32:12,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:32:12,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:32:12,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:32:12,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:32:12,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:32:12,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:32:12,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:32:12,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:32:12,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:32:12,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:32:12,925 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 [2020-10-28 13:32:12,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:32:12,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:32:12,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:32:12,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:32:12,983 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:32:12,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:32:12,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:32:12,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:32:12,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:32:12,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:32:12,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:32:12,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:32:12,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:32:12,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:32:12,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:32:12,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:32:12,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:32:12,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:32:12,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:32:12,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:32:12,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:32:12,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:32:12,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:32:12,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:32:12,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:32:12,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:32:12,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:32:12,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:32:12,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:32:12,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:32:13,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:32:13,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:32:13,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:32:13,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:32:13,439 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:32:13,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08.c [2020-10-28 13:32:13,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b40ff7dec/ba84f4518ee24fe8959a48de94d33647/FLAG46e244390 [2020-10-28 13:32:14,614 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:32:14,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label08.c [2020-10-28 13:32:14,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b40ff7dec/ba84f4518ee24fe8959a48de94d33647/FLAG46e244390 [2020-10-28 13:32:15,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b40ff7dec/ba84f4518ee24fe8959a48de94d33647 [2020-10-28 13:32:15,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:32:15,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:32:15,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:32:15,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:32:15,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:32:15,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:32:15" (1/1) ... [2020-10-28 13:32:15,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2351fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:15, skipping insertion in model container [2020-10-28 13:32:15,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:32:15" (1/1) ... [2020-10-28 13:32:15,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:32:15,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:32:16,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:32:16,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:32:16,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:32:16,703 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:32:16,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16 WrapperNode [2020-10-28 13:32:16,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:32:16,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:32:16,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:32:16,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:32:16,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:16,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (1/1) ... [2020-10-28 13:32:17,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:32:17,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:32:17,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:32:17,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:32:17,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (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 [2020-10-28 13:32:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:32:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:32:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:32:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:32:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:32:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:32:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:32:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:32:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:32:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:32:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:32:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:32:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:32:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:32:17,106 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:32:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:32:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:32:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:32:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:32:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:32:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:32:26,952 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:32:26,959 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:32:26,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:32:26 BoogieIcfgContainer [2020-10-28 13:32:26,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:32:26,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:32:26,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:32:26,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:32:26,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:32:15" (1/3) ... [2020-10-28 13:32:26,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2803028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:32:26, skipping insertion in model container [2020-10-28 13:32:26,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:32:16" (2/3) ... [2020-10-28 13:32:26,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2803028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:32:26, skipping insertion in model container [2020-10-28 13:32:26,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:32:26" (3/3) ... [2020-10-28 13:32:26,977 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label08.c [2020-10-28 13:32:26,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:32:26,997 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:32:27,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:32:27,047 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:32:27,047 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:32:27,047 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:32:27,047 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:32:27,048 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:32:27,048 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:32:27,048 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:32:27,048 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:32:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:32:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 13:32:27,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:27,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:27,095 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:27,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2078566931, now seen corresponding path program 1 times [2020-10-28 13:32:27,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:27,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549442090] [2020-10-28 13:32:27,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:28,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:28,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:32:28,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 709 [2020-10-28 13:32:28,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:28,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:32:28,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:32:28,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:32:28,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:32:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:28,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:28,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:28,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:28,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:32:28,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:28,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:28,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:32:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:32:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:32:28,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549442090] [2020-10-28 13:32:28,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:32:28,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:32:28,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287122164] [2020-10-28 13:32:28,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:32:28,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:28,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:32:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:32:28,468 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:32:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:41,006 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:32:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:32:41,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-28 13:32:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:41,036 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:32:41,036 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:32:41,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:32:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:32:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:32:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:32:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:32:41,203 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 65 [2020-10-28 13:32:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:41,205 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:32:41,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:32:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:32:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 13:32:41,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:41,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:41,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:32:41,222 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1785649266, now seen corresponding path program 1 times [2020-10-28 13:32:41,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:41,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826584904] [2020-10-28 13:32:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:44,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:32:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:32:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2785 [2020-10-28 13:32:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:44,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:32:44,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:32:44,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:32:44,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:32:44,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:44,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:44,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:44,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:44,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:44,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:32:44,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:44,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:32:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 13:32:44,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:32:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:32:44,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:44,613 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:32:44,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826584904] [2020-10-28 13:32:44,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:32:44,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:32:44,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369753373] [2020-10-28 13:32:44,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:44,617 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:33:01,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:01,105 INFO L93 Difference]: Finished difference Result 2964 states and 4573 transitions. [2020-10-28 13:33:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:33:01,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-28 13:33:01,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:01,121 INFO L225 Difference]: With dead ends: 2964 [2020-10-28 13:33:01,121 INFO L226 Difference]: Without dead ends: 1967 [2020-10-28 13:33:01,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:33:01,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2020-10-28 13:33:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1915. [2020-10-28 13:33:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1915 states. [2020-10-28 13:33:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2483 transitions. [2020-10-28 13:33:01,230 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2483 transitions. Word has length 136 [2020-10-28 13:33:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:01,233 INFO L481 AbstractCegarLoop]: Abstraction has 1915 states and 2483 transitions. [2020-10-28 13:33:01,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:01,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2483 transitions. [2020-10-28 13:33:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 13:33:01,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:01,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:01,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:33:01,240 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:01,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:01,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1888806553, now seen corresponding path program 1 times [2020-10-28 13:33:01,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:01,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807300821] [2020-10-28 13:33:01,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:01,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:01,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:05,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:05,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 13:33:05,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:33:05,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4198 [2020-10-28 13:33:05,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:05,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:33:05,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 13:33:05,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:05,781 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:33:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:05,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:33:05,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:05,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:05,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:05,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:05,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:05,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:05,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:33:05,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:33:05,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:05,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:33:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:33:06,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807300821] [2020-10-28 13:33:06,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:06,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:33:06,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637897654] [2020-10-28 13:33:06,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:33:06,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:06,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:33:06,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:33:06,025 INFO L87 Difference]: Start difference. First operand 1915 states and 2483 transitions. Second operand 5 states. [2020-10-28 13:33:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:21,600 INFO L93 Difference]: Finished difference Result 4732 states and 6292 transitions. [2020-10-28 13:33:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:33:21,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-28 13:33:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:21,616 INFO L225 Difference]: With dead ends: 4732 [2020-10-28 13:33:21,616 INFO L226 Difference]: Without dead ends: 2377 [2020-10-28 13:33:21,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:33:21,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2377 states. [2020-10-28 13:33:21,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2358. [2020-10-28 13:33:21,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2358 states. [2020-10-28 13:33:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 2901 transitions. [2020-10-28 13:33:21,694 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 2901 transitions. Word has length 139 [2020-10-28 13:33:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:21,695 INFO L481 AbstractCegarLoop]: Abstraction has 2358 states and 2901 transitions. [2020-10-28 13:33:21,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:33:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 2901 transitions. [2020-10-28 13:33:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 13:33:21,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:21,699 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:21,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:33:21,700 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:21,701 INFO L82 PathProgramCache]: Analyzing trace with hash -583137417, now seen corresponding path program 1 times [2020-10-28 13:33:21,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:21,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894555889] [2020-10-28 13:33:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:21,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:22,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:22,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 13:33:22,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1116 [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:33:22,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:33:22,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:23,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:33:23,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:23,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:23,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:23,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:23,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:33:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:23,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:23,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:33:23,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:33:23,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:23,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:33:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:33:23,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894555889] [2020-10-28 13:33:23,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:23,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:33:23,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082351271] [2020-10-28 13:33:23,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:23,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:23,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:23,566 INFO L87 Difference]: Start difference. First operand 2358 states and 2901 transitions. Second operand 7 states. [2020-10-28 13:33:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:36,659 INFO L93 Difference]: Finished difference Result 6081 states and 7755 transitions. [2020-10-28 13:33:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:33:36,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-28 13:33:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:36,685 INFO L225 Difference]: With dead ends: 6081 [2020-10-28 13:33:36,685 INFO L226 Difference]: Without dead ends: 3729 [2020-10-28 13:33:36,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:33:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-10-28 13:33:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3721. [2020-10-28 13:33:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3721 states. [2020-10-28 13:33:36,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 4575 transitions. [2020-10-28 13:33:36,816 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 4575 transitions. Word has length 225 [2020-10-28 13:33:36,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:36,818 INFO L481 AbstractCegarLoop]: Abstraction has 3721 states and 4575 transitions. [2020-10-28 13:33:36,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 4575 transitions. [2020-10-28 13:33:36,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-28 13:33:36,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:36,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:36,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:33:36,824 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:36,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:36,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1163895205, now seen corresponding path program 1 times [2020-10-28 13:33:36,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:36,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810178353] [2020-10-28 13:33:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:37,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:41,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-28 13:33:41,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:33:41,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4624 [2020-10-28 13:33:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:41,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:33:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 13:33:41,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:41,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:41,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:41,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:41,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:41,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:33:41,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:41,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:41,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:41,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:41,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:41,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:41,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:41,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:41,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:41,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:33:41,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:41,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:41,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:41,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:41,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:41,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:33:41,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:41,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:33:41,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:41,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:41,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:33:41,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:33:41,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810178353] [2020-10-28 13:33:41,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:41,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:33:41,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876738401] [2020-10-28 13:33:41,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:33:41,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:41,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:33:41,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:33:41,974 INFO L87 Difference]: Start difference. First operand 3721 states and 4575 transitions. Second operand 5 states. [2020-10-28 13:33:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:56,396 INFO L93 Difference]: Finished difference Result 10516 states and 13110 transitions. [2020-10-28 13:33:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:33:56,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2020-10-28 13:33:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:56,438 INFO L225 Difference]: With dead ends: 10516 [2020-10-28 13:33:56,438 INFO L226 Difference]: Without dead ends: 6800 [2020-10-28 13:33:56,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:33:56,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2020-10-28 13:33:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 5930. [2020-10-28 13:33:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2020-10-28 13:33:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 7143 transitions. [2020-10-28 13:33:56,612 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 7143 transitions. Word has length 227 [2020-10-28 13:33:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:56,612 INFO L481 AbstractCegarLoop]: Abstraction has 5930 states and 7143 transitions. [2020-10-28 13:33:56,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:33:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 7143 transitions. [2020-10-28 13:33:56,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 13:33:56,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:56,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:56,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:33:56,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:56,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:56,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1170513573, now seen corresponding path program 1 times [2020-10-28 13:33:56,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:56,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254734728] [2020-10-28 13:33:56,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:56,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:01,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:01,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 13:34:01,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:34:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 13:34:01,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:01,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:34:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:34:01,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 13:34:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:01,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:34:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:01,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:01,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:01,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:02,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:02,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:02,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:02,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:34:02,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:02,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:02,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:02,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:34:02,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:02,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:02,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:02,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:34:02,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:02,424 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:34:02,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254734728] [2020-10-28 13:34:02,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:02,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:34:02,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961999753] [2020-10-28 13:34:02,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:34:02,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:02,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:34:02,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:34:02,429 INFO L87 Difference]: Start difference. First operand 5930 states and 7143 transitions. Second operand 5 states. [2020-10-28 13:34:15,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:15,782 INFO L93 Difference]: Finished difference Result 11858 states and 14293 transitions. [2020-10-28 13:34:15,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:34:15,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-28 13:34:15,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:15,819 INFO L225 Difference]: With dead ends: 11858 [2020-10-28 13:34:15,819 INFO L226 Difference]: Without dead ends: 5934 [2020-10-28 13:34:15,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:34:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2020-10-28 13:34:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5930. [2020-10-28 13:34:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5930 states. [2020-10-28 13:34:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5930 states to 5930 states and 7091 transitions. [2020-10-28 13:34:15,987 INFO L78 Accepts]: Start accepts. Automaton has 5930 states and 7091 transitions. Word has length 238 [2020-10-28 13:34:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:15,987 INFO L481 AbstractCegarLoop]: Abstraction has 5930 states and 7091 transitions. [2020-10-28 13:34:15,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:34:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5930 states and 7091 transitions. [2020-10-28 13:34:15,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 13:34:15,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:15,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:34:15,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:34:15,996 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:15,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:15,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1072122784, now seen corresponding path program 1 times [2020-10-28 13:34:15,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:15,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684046103] [2020-10-28 13:34:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:16,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:17,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:19,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:19,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 13:34:19,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:34:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3191 [2020-10-28 13:34:19,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:19,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:34:19,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:34:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:19,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:19,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:19,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:19,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:34:19,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:19,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:19,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:19,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:19,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:19,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:34:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:19,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:19,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:34:19,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:19,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:34:19,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:19,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:19,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:34:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:34:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:34:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:34:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:34:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:34:20,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684046103] [2020-10-28 13:34:20,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:20,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:34:20,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588361143] [2020-10-28 13:34:20,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:34:20,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:20,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:34:20,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:34:20,036 INFO L87 Difference]: Start difference. First operand 5930 states and 7091 transitions. Second operand 7 states. [2020-10-28 13:34:37,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:37,190 INFO L93 Difference]: Finished difference Result 14751 states and 17991 transitions. [2020-10-28 13:34:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:37,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-28 13:34:37,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:37,250 INFO L225 Difference]: With dead ends: 14751 [2020-10-28 13:34:37,251 INFO L226 Difference]: Without dead ends: 8370 [2020-10-28 13:34:37,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2020-10-28 13:34:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 7881. [2020-10-28 13:34:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7881 states. [2020-10-28 13:34:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7881 states to 7881 states and 9608 transitions. [2020-10-28 13:34:37,543 INFO L78 Accepts]: Start accepts. Automaton has 7881 states and 9608 transitions. Word has length 309 [2020-10-28 13:34:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:37,544 INFO L481 AbstractCegarLoop]: Abstraction has 7881 states and 9608 transitions. [2020-10-28 13:34:37,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7881 states and 9608 transitions. [2020-10-28 13:34:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-28 13:34:37,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:37,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:34:37,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:34:37,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:37,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:37,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1092014499, now seen corresponding path program 1 times [2020-10-28 13:34:37,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:37,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563238836] [2020-10-28 13:34:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:39,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:34:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:34:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:34:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:42,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:34:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:34:42,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:34:42,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:42,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:42,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:42,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:42,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:42,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:42,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:42,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:42,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:42,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:42,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:42,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:34:42,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:42,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:42,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:42,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:42,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:43,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:43,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:34:43,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:34:43,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:43,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:34:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:34:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:34:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:43,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:43,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:34:43,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:34:43,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:34:43,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563238836] [2020-10-28 13:34:43,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:43,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:34:43,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5221126] [2020-10-28 13:34:43,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:34:43,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:43,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:34:43,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:34:43,347 INFO L87 Difference]: Start difference. First operand 7881 states and 9608 transitions. Second operand 7 states. [2020-10-28 13:34:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:59,907 INFO L93 Difference]: Finished difference Result 20435 states and 26232 transitions. [2020-10-28 13:34:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:59,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 314 [2020-10-28 13:34:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:59,956 INFO L225 Difference]: With dead ends: 20435 [2020-10-28 13:34:59,956 INFO L226 Difference]: Without dead ends: 12120 [2020-10-28 13:34:59,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12120 states. [2020-10-28 13:35:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12120 to 11088. [2020-10-28 13:35:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11088 states. [2020-10-28 13:35:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11088 states to 11088 states and 13366 transitions. [2020-10-28 13:35:00,266 INFO L78 Accepts]: Start accepts. Automaton has 11088 states and 13366 transitions. Word has length 314 [2020-10-28 13:35:00,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:00,267 INFO L481 AbstractCegarLoop]: Abstraction has 11088 states and 13366 transitions. [2020-10-28 13:35:00,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:00,267 INFO L276 IsEmpty]: Start isEmpty. Operand 11088 states and 13366 transitions. [2020-10-28 13:35:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-28 13:35:00,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:00,276 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:00,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:35:00,277 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1546326668, now seen corresponding path program 1 times [2020-10-28 13:35:00,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:00,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383986520] [2020-10-28 13:35:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:00,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:00,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:02,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:04,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4267 [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:35:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:35:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:04,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:04,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:04,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:04,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:04,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:04,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:35:04,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:04,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:04,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:05,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:05,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:35:05,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:05,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:35:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:05,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:05,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:35:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 319 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:35:05,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383986520] [2020-10-28 13:35:05,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:05,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:35:05,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422832862] [2020-10-28 13:35:05,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:05,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:05,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:05,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:05,334 INFO L87 Difference]: Start difference. First operand 11088 states and 13366 transitions. Second operand 7 states. [2020-10-28 13:35:05,491 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:35:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:22,141 INFO L93 Difference]: Finished difference Result 23497 states and 28177 transitions. [2020-10-28 13:35:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:35:22,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 315 [2020-10-28 13:35:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:22,248 INFO L225 Difference]: With dead ends: 23497 [2020-10-28 13:35:22,249 INFO L226 Difference]: Without dead ends: 12415 [2020-10-28 13:35:22,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:35:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12415 states. [2020-10-28 13:35:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12415 to 11521. [2020-10-28 13:35:22,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11521 states. [2020-10-28 13:35:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11521 states to 11521 states and 13842 transitions. [2020-10-28 13:35:22,538 INFO L78 Accepts]: Start accepts. Automaton has 11521 states and 13842 transitions. Word has length 315 [2020-10-28 13:35:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:22,539 INFO L481 AbstractCegarLoop]: Abstraction has 11521 states and 13842 transitions. [2020-10-28 13:35:22,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:35:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 11521 states and 13842 transitions. [2020-10-28 13:35:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-28 13:35:22,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:22,550 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:22,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:35:22,551 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:22,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:22,552 INFO L82 PathProgramCache]: Analyzing trace with hash 797931039, now seen corresponding path program 1 times [2020-10-28 13:35:22,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:22,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081068382] [2020-10-28 13:35:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:22,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:23,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-28 13:35:27,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:35:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:35:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:35:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:35:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:35:27,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:27,830 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:35:27,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:27,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:27,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:27,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:27,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:28,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:28,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:28,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:35:28,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:35:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:35:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:28,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:28,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:35:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:35:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 13:35:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:28,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:35:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 252 proven. 58 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:35:28,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081068382] [2020-10-28 13:35:28,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:28,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:35:28,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323950808] [2020-10-28 13:35:28,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:35:28,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:28,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:35:28,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:35:28,485 INFO L87 Difference]: Start difference. First operand 11521 states and 13842 transitions. Second operand 6 states. [2020-10-28 13:35:28,638 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:35:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:35:45,709 INFO L93 Difference]: Finished difference Result 27136 states and 33074 transitions. [2020-10-28 13:35:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:35:45,712 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-10-28 13:35:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:35:45,773 INFO L225 Difference]: With dead ends: 27136 [2020-10-28 13:35:45,773 INFO L226 Difference]: Without dead ends: 15154 [2020-10-28 13:35:45,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:35:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15154 states. [2020-10-28 13:35:46,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15154 to 14228. [2020-10-28 13:35:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14228 states. [2020-10-28 13:35:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14228 states to 14228 states and 17480 transitions. [2020-10-28 13:35:46,240 INFO L78 Accepts]: Start accepts. Automaton has 14228 states and 17480 transitions. Word has length 332 [2020-10-28 13:35:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:35:46,240 INFO L481 AbstractCegarLoop]: Abstraction has 14228 states and 17480 transitions. [2020-10-28 13:35:46,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:35:46,241 INFO L276 IsEmpty]: Start isEmpty. Operand 14228 states and 17480 transitions. [2020-10-28 13:35:46,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-28 13:35:46,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:35:46,253 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:35:46,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:35:46,253 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:35:46,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:35:46,254 INFO L82 PathProgramCache]: Analyzing trace with hash -595412162, now seen corresponding path program 1 times [2020-10-28 13:35:46,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:35:46,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269609461] [2020-10-28 13:35:46,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:35:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:46,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:51,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:51,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-28 13:35:51,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:35:51,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 13:35:51,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:51,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:35:51,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:35:51,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:51,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:35:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:51,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:51,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:35:51,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:51,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:51,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:35:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:51,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:51,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:35:51,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:35:51,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:35:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:51,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:51,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:35:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:35:51,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:35:51,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:52,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:35:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:35:52,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:35:52,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:35:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:35:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 259 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 13:35:52,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269609461] [2020-10-28 13:35:52,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:35:52,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:35:52,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77408215] [2020-10-28 13:35:52,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:35:52,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:35:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:35:52,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:35:52,268 INFO L87 Difference]: Start difference. First operand 14228 states and 17480 transitions. Second operand 7 states. [2020-10-28 13:35:53,237 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:36:00,211 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71