/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:14,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:14,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:14,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:14,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:14,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:14,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:14,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:14,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:14,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:14,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:14,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:14,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:14,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:14,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:14,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:14,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:14,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:14,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:14,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:14,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:14,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:14,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:14,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:14,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:14,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:14,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:14,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:14,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:14,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:14,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:14,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:14,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:14,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:14,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:14,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:14,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:14,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:14,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:14,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:14,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:14,880 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 [2020-09-25 06:41:14,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:14,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:14,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:14,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:14,910 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:14,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:14,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:14,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:14,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:14,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:14,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:14,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:14,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:14,911 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:14,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:14,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:14,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:14,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:14,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:14,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:14,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:14,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:14,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:14,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:14,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:14,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:14,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:14,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:14,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:14,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 06:41:15,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:15,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:15,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:15,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:15,459 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:15,460 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 06:41:15,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0fccd5fe/95ef1fe24b2e421baa4806265e826b5f/FLAG9ae6276a9 [2020-09-25 06:41:16,181 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:16,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 06:41:16,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0fccd5fe/95ef1fe24b2e421baa4806265e826b5f/FLAG9ae6276a9 [2020-09-25 06:41:16,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0fccd5fe/95ef1fe24b2e421baa4806265e826b5f [2020-09-25 06:41:16,433 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:16,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:16,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:16,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:16,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:16,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:16" (1/1) ... [2020-09-25 06:41:16,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ed4b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:16, skipping insertion in model container [2020-09-25 06:41:16,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:16" (1/1) ... [2020-09-25 06:41:16,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:16,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:17,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:17,153 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:17,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:17,260 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:17,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17 WrapperNode [2020-09-25 06:41:17,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:17,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:17,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:17,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:17,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (1/1) ... [2020-09-25 06:41:17,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:17,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:17,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:17,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:17,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (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 [2020-09-25 06:41:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:41:17,431 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:41:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 06:41:17,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:41:17,432 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:17,433 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:17,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:17,435 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:17,436 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:17,440 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:17,453 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:17,454 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:17,455 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 06:41:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:17,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:41:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:41:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:17,832 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 06:41:18,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:18,273 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 06:41:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:18 BoogieIcfgContainer [2020-09-25 06:41:18,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:18,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:18,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:18,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:18,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:16" (1/3) ... [2020-09-25 06:41:18,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb93aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:18, skipping insertion in model container [2020-09-25 06:41:18,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:17" (2/3) ... [2020-09-25 06:41:18,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb93aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:18, skipping insertion in model container [2020-09-25 06:41:18,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:18" (3/3) ... [2020-09-25 06:41:18,290 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 06:41:18,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:18,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:18,338 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:18,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:18,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:18,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:18,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:18,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:18,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:18,375 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:18,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:18,405 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 06:41:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 06:41:18,418 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:18,419 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] [2020-09-25 06:41:18,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 06:41:18,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:18,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622707324] [2020-09-25 06:41:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:18,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:18,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:41:19,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-09-25 06:41:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:19,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 06:41:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:41:19,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:19,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:19,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:41:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:19,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:19,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622707324] [2020-09-25 06:41:19,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:19,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 06:41:19,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779710940] [2020-09-25 06:41:19,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 06:41:19,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:19,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 06:41:19,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:41:19,589 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-25 06:41:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:19,972 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-25 06:41:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 06:41:19,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-25 06:41:19,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:19,988 INFO L225 Difference]: With dead ends: 342 [2020-09-25 06:41:19,988 INFO L226 Difference]: Without dead ends: 166 [2020-09-25 06:41:19,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 06:41:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-25 06:41:20,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-25 06:41:20,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-25 06:41:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-25 06:41:20,059 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-25 06:41:20,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:20,059 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-25 06:41:20,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 06:41:20,060 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-25 06:41:20,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 06:41:20,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:20,063 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] [2020-09-25 06:41:20,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:20,064 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:20,064 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-25 06:41:20,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:20,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376660234] [2020-09-25 06:41:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:20,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 06:41:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-09-25 06:41:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:20,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:41:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:20,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:41:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:20,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:20,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:20,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:20,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:20,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:20,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:20,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:20,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376660234] [2020-09-25 06:41:20,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:20,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:41:20,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286713745] [2020-09-25 06:41:20,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:41:20,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:20,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:41:20,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:20,705 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-09-25 06:41:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:21,076 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-09-25 06:41:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:41:21,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-09-25 06:41:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:21,082 INFO L225 Difference]: With dead ends: 251 [2020-09-25 06:41:21,082 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 06:41:21,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 06:41:21,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 06:41:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 06:41:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 06:41:21,127 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-09-25 06:41:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:21,127 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 06:41:21,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:41:21,128 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 06:41:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 06:41:21,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:21,132 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] [2020-09-25 06:41:21,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:21,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:21,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:21,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 06:41:21,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:21,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091519785] [2020-09-25 06:41:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:22,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:22,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 06:41:22,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:22,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 857 [2020-09-25 06:41:22,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:22,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 06:41:22,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:41:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:22,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:22,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:22,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:22,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:22,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:22,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:22,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091519785] [2020-09-25 06:41:22,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:22,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:22,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741424489] [2020-09-25 06:41:22,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:22,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:22,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:22,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:22,074 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-09-25 06:41:22,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:22,398 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-09-25 06:41:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 06:41:22,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 06:41:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:22,401 INFO L225 Difference]: With dead ends: 321 [2020-09-25 06:41:22,401 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 06:41:22,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 06:41:22,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-25 06:41:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-25 06:41:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-25 06:41:22,416 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-09-25 06:41:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:22,416 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-25 06:41:22,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-25 06:41:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 06:41:22,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:22,420 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] [2020-09-25 06:41:22,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:22,420 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-09-25 06:41:22,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:22,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920647876] [2020-09-25 06:41:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:22,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:22,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 06:41:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 06:41:22,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:22,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 06:41:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:22,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:22,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:22,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:22,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:22,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:22,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:22,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:22,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920647876] [2020-09-25 06:41:22,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:22,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:41:22,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800851457] [2020-09-25 06:41:22,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:22,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:22,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:22,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:22,852 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-09-25 06:41:23,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:23,386 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-09-25 06:41:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:23,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-25 06:41:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:23,389 INFO L225 Difference]: With dead ends: 279 [2020-09-25 06:41:23,390 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 06:41:23,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 06:41:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-09-25 06:41:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-25 06:41:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-09-25 06:41:23,424 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-09-25 06:41:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:23,425 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-09-25 06:41:23,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:23,425 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-09-25 06:41:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:41:23,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:23,429 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:23,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:23,430 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-09-25 06:41:23,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:23,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120985830] [2020-09-25 06:41:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:23,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:23,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 06:41:23,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:23,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-25 06:41:23,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:23,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:23,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:23,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:41:23,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:23,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:23,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:23,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:23,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:23,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:23,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:23,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:23,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:23,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:23,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120985830] [2020-09-25 06:41:23,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:23,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:41:23,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616787790] [2020-09-25 06:41:23,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:23,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:23,843 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 7 states. [2020-09-25 06:41:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:24,408 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2020-09-25 06:41:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:24,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 06:41:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:24,413 INFO L225 Difference]: With dead ends: 282 [2020-09-25 06:41:24,413 INFO L226 Difference]: Without dead ends: 267 [2020-09-25 06:41:24,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-25 06:41:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-25 06:41:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-25 06:41:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-25 06:41:24,432 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 62 [2020-09-25 06:41:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:24,437 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-25 06:41:24,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-25 06:41:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 06:41:24,440 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:24,441 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:24,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:41:24,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:24,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 06:41:24,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:24,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36295271] [2020-09-25 06:41:24,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:24,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 06:41:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 06:41:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:24,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:24,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:24,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:41:24,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:24,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:24,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:24,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:24,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:41:24,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:24,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:24,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:41:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:24,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [36295271] [2020-09-25 06:41:24,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:24,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:41:24,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477626120] [2020-09-25 06:41:24,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:41:24,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:24,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:41:24,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:41:24,840 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-25 06:41:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:25,290 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 06:41:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 06:41:25,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 06:41:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:25,292 INFO L225 Difference]: With dead ends: 264 [2020-09-25 06:41:25,293 INFO L226 Difference]: Without dead ends: 240 [2020-09-25 06:41:25,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-25 06:41:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-25 06:41:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 06:41:25,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-25 06:41:25,303 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-25 06:41:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:25,303 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-25 06:41:25,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:41:25,303 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-25 06:41:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:41:25,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:25,305 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:25,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:41:25,305 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:25,306 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 06:41:25,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:25,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338793394] [2020-09-25 06:41:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:25,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 06:41:26,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:26,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-09-25 06:41:26,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:41:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:26,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 06:41:26,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:26,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:26,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:26,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:26,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:26,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:26,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:26,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:26,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338793394] [2020-09-25 06:41:26,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:26,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:41:26,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425073278] [2020-09-25 06:41:26,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:41:26,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:26,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:41:26,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:26,883 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-25 06:41:27,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:27,760 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-25 06:41:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 06:41:27,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 06:41:27,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:27,763 INFO L225 Difference]: With dead ends: 288 [2020-09-25 06:41:27,763 INFO L226 Difference]: Without dead ends: 282 [2020-09-25 06:41:27,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-25 06:41:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-25 06:41:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 06:41:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-25 06:41:27,772 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-25 06:41:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:27,772 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-25 06:41:27,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:41:27,773 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-25 06:41:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 06:41:27,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:27,774 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:27,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:41:27,774 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:27,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 06:41:27,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:27,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498584322] [2020-09-25 06:41:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:28,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 06:41:28,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-09-25 06:41:28,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:28,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 06:41:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:28,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 06:41:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:29,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:29,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:29,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:29,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498584322] [2020-09-25 06:41:29,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:29,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 06:41:29,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507557090] [2020-09-25 06:41:29,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 06:41:29,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:29,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 06:41:29,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:41:29,261 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 15 states. [2020-09-25 06:41:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:30,607 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-09-25 06:41:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 06:41:30,608 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-09-25 06:41:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:30,610 INFO L225 Difference]: With dead ends: 329 [2020-09-25 06:41:30,610 INFO L226 Difference]: Without dead ends: 323 [2020-09-25 06:41:30,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-09-25 06:41:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-25 06:41:30,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 238. [2020-09-25 06:41:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-25 06:41:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-25 06:41:30,620 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-25 06:41:30,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:30,620 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-25 06:41:30,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 06:41:30,621 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-25 06:41:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:41:30,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:30,622 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:30,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:41:30,623 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:30,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:30,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 06:41:30,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:30,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504732414] [2020-09-25 06:41:30,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:30,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:30,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:31,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:41:34,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:41:34,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3966 [2020-09-25 06:41:34,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:41:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:34,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 06:41:34,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:34,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:34,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:34,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:34,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504732414] [2020-09-25 06:41:34,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:34,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:34,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334964938] [2020-09-25 06:41:34,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:34,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:34,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:34,733 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 9 states. [2020-09-25 06:41:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:35,365 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2020-09-25 06:41:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:41:35,366 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 06:41:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:35,368 INFO L225 Difference]: With dead ends: 305 [2020-09-25 06:41:35,368 INFO L226 Difference]: Without dead ends: 290 [2020-09-25 06:41:35,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:41:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-25 06:41:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 245. [2020-09-25 06:41:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-09-25 06:41:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 272 transitions. [2020-09-25 06:41:35,378 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 272 transitions. Word has length 73 [2020-09-25 06:41:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:35,379 INFO L479 AbstractCegarLoop]: Abstraction has 245 states and 272 transitions. [2020-09-25 06:41:35,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 272 transitions. [2020-09-25 06:41:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:41:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:35,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:35,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 06:41:35,381 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:35,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 06:41:35,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:35,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563907675] [2020-09-25 06:41:35,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:35,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:36,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:41:36,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:36,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-09-25 06:41:36,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:36,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:36,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:36,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:41:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:36,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:36,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:36,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:36,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563907675] [2020-09-25 06:41:36,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:36,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:36,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045968854] [2020-09-25 06:41:36,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:36,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:36,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:36,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:36,433 INFO L87 Difference]: Start difference. First operand 245 states and 272 transitions. Second operand 16 states. [2020-09-25 06:41:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:37,893 INFO L93 Difference]: Finished difference Result 310 states and 340 transitions. [2020-09-25 06:41:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:41:37,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 06:41:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:37,896 INFO L225 Difference]: With dead ends: 310 [2020-09-25 06:41:37,896 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 06:41:37,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 06:41:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 06:41:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 249. [2020-09-25 06:41:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-25 06:41:37,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 276 transitions. [2020-09-25 06:41:37,906 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 276 transitions. Word has length 73 [2020-09-25 06:41:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:37,906 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 276 transitions. [2020-09-25 06:41:37,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 276 transitions. [2020-09-25 06:41:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:41:37,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:37,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:37,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 06:41:37,908 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:37,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:37,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 06:41:37,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:37,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220224063] [2020-09-25 06:41:37,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:41:38,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-09-25 06:41:38,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:38,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:41:38,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:38,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:38,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:38,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:38,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:38,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220224063] [2020-09-25 06:41:38,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:38,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:38,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386773950] [2020-09-25 06:41:38,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:38,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:38,954 INFO L87 Difference]: Start difference. First operand 249 states and 276 transitions. Second operand 16 states. [2020-09-25 06:41:40,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:40,674 INFO L93 Difference]: Finished difference Result 324 states and 354 transitions. [2020-09-25 06:41:40,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 06:41:40,675 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 06:41:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:40,677 INFO L225 Difference]: With dead ends: 324 [2020-09-25 06:41:40,678 INFO L226 Difference]: Without dead ends: 318 [2020-09-25 06:41:40,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 06:41:40,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-09-25 06:41:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2020-09-25 06:41:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 06:41:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 286 transitions. [2020-09-25 06:41:40,688 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 286 transitions. Word has length 73 [2020-09-25 06:41:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:40,688 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 286 transitions. [2020-09-25 06:41:40,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:40,688 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 286 transitions. [2020-09-25 06:41:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 06:41:40,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:40,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:40,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 06:41:40,690 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:40,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:40,690 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 06:41:40,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:40,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595818363] [2020-09-25 06:41:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:40,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:41,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:41,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:41:41,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1265 [2020-09-25 06:41:41,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:41,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:41:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 06:41:41,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:41:41,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:42,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:42,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:42,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:42,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:42,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:41:42,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:42,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:42,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:42,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:42,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595818363] [2020-09-25 06:41:42,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:42,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:42,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720652092] [2020-09-25 06:41:42,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:42,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:42,129 INFO L87 Difference]: Start difference. First operand 258 states and 286 transitions. Second operand 9 states. [2020-09-25 06:41:42,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:42,684 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2020-09-25 06:41:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:41:42,685 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 73 [2020-09-25 06:41:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:42,687 INFO L225 Difference]: With dead ends: 316 [2020-09-25 06:41:42,687 INFO L226 Difference]: Without dead ends: 297 [2020-09-25 06:41:42,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:41:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-25 06:41:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 258. [2020-09-25 06:41:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-25 06:41:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 285 transitions. [2020-09-25 06:41:42,697 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 285 transitions. Word has length 73 [2020-09-25 06:41:42,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:42,697 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 285 transitions. [2020-09-25 06:41:42,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:42,697 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 285 transitions. [2020-09-25 06:41:42,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 06:41:42,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:42,698 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:42,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 06:41:42,699 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:42,699 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 06:41:42,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:42,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809699693] [2020-09-25 06:41:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:42,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:42,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:45,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:41:45,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:45,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2551 [2020-09-25 06:41:45,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:45,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:41:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:41:45,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:45,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:45,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:45,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:45,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:45,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:45,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:45,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:45,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:45,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809699693] [2020-09-25 06:41:45,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:45,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 06:41:45,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504467833] [2020-09-25 06:41:45,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 06:41:45,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:45,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 06:41:45,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:41:45,633 INFO L87 Difference]: Start difference. First operand 258 states and 285 transitions. Second operand 18 states. [2020-09-25 06:41:47,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:47,296 INFO L93 Difference]: Finished difference Result 352 states and 384 transitions. [2020-09-25 06:41:47,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 06:41:47,296 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 06:41:47,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:47,298 INFO L225 Difference]: With dead ends: 352 [2020-09-25 06:41:47,298 INFO L226 Difference]: Without dead ends: 346 [2020-09-25 06:41:47,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 06:41:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-09-25 06:41:47,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 272. [2020-09-25 06:41:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-25 06:41:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 300 transitions. [2020-09-25 06:41:47,306 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 300 transitions. Word has length 78 [2020-09-25 06:41:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:47,307 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 300 transitions. [2020-09-25 06:41:47,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 06:41:47,307 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 300 transitions. [2020-09-25 06:41:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 06:41:47,308 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:47,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:47,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 06:41:47,308 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 06:41:47,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:47,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988309798] [2020-09-25 06:41:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:47,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:50,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:41:50,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:50,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3270 [2020-09-25 06:41:50,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:50,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 06:41:50,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:50,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:41:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:50,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:50,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:50,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:50,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:50,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:50,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:50,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:50,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:50,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988309798] [2020-09-25 06:41:50,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:50,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 06:41:50,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719550317] [2020-09-25 06:41:50,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 06:41:50,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:50,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 06:41:50,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 06:41:50,939 INFO L87 Difference]: Start difference. First operand 272 states and 300 transitions. Second operand 18 states. [2020-09-25 06:41:52,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:52,736 INFO L93 Difference]: Finished difference Result 378 states and 412 transitions. [2020-09-25 06:41:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 06:41:52,737 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 06:41:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:52,739 INFO L225 Difference]: With dead ends: 378 [2020-09-25 06:41:52,740 INFO L226 Difference]: Without dead ends: 372 [2020-09-25 06:41:52,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 06:41:52,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-09-25 06:41:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2020-09-25 06:41:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-25 06:41:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 313 transitions. [2020-09-25 06:41:52,751 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 313 transitions. Word has length 78 [2020-09-25 06:41:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:52,752 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 313 transitions. [2020-09-25 06:41:52,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 06:41:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 313 transitions. [2020-09-25 06:41:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:41:52,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:52,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:52,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 06:41:52,754 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:52,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 06:41:52,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:52,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324097729] [2020-09-25 06:41:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:41:53,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 632 [2020-09-25 06:41:53,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:53,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:41:53,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:53,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:53,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:53,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:53,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:53,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:53,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:53,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:53,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324097729] [2020-09-25 06:41:53,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:53,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:53,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295132269] [2020-09-25 06:41:53,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:53,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:53,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:53,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:53,718 INFO L87 Difference]: Start difference. First operand 284 states and 313 transitions. Second operand 16 states. [2020-09-25 06:41:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:55,272 INFO L93 Difference]: Finished difference Result 350 states and 382 transitions. [2020-09-25 06:41:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 06:41:55,273 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 06:41:55,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:55,275 INFO L225 Difference]: With dead ends: 350 [2020-09-25 06:41:55,275 INFO L226 Difference]: Without dead ends: 335 [2020-09-25 06:41:55,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 06:41:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-09-25 06:41:55,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 286. [2020-09-25 06:41:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-25 06:41:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 315 transitions. [2020-09-25 06:41:55,287 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 315 transitions. Word has length 79 [2020-09-25 06:41:55,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:55,288 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 315 transitions. [2020-09-25 06:41:55,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:55,288 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 315 transitions. [2020-09-25 06:41:55,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:41:55,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:55,289 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:55,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 06:41:55,290 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:55,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 06:41:55,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:55,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401999381] [2020-09-25 06:41:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:55,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:55,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:55,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:41:55,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 682 [2020-09-25 06:41:55,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:55,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:41:55,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:56,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:56,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:41:56,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:56,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:56,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401999381] [2020-09-25 06:41:56,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:56,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:56,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779104976] [2020-09-25 06:41:56,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:56,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:56,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:56,335 INFO L87 Difference]: Start difference. First operand 286 states and 315 transitions. Second operand 16 states. [2020-09-25 06:41:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:57,753 INFO L93 Difference]: Finished difference Result 330 states and 361 transitions. [2020-09-25 06:41:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:41:57,754 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 06:41:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:57,755 INFO L225 Difference]: With dead ends: 330 [2020-09-25 06:41:57,756 INFO L226 Difference]: Without dead ends: 300 [2020-09-25 06:41:57,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 06:41:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-25 06:41:57,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 275. [2020-09-25 06:41:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-25 06:41:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 303 transitions. [2020-09-25 06:41:57,771 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 303 transitions. Word has length 79 [2020-09-25 06:41:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:57,771 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 303 transitions. [2020-09-25 06:41:57,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:41:57,772 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 303 transitions. [2020-09-25 06:41:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 06:41:57,773 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:57,773 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:57,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 06:41:57,773 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:57,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:57,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 06:41:57,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:57,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534871833] [2020-09-25 06:41:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:57,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 06:41:58,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:41:58,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:41:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:41:58,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:41:58,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534871833] [2020-09-25 06:41:58,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:58,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:41:58,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559035996] [2020-09-25 06:41:58,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:41:58,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:58,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:41:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:41:58,742 INFO L87 Difference]: Start difference. First operand 275 states and 303 transitions. Second operand 16 states. [2020-09-25 06:42:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:00,202 INFO L93 Difference]: Finished difference Result 314 states and 343 transitions. [2020-09-25 06:42:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 06:42:00,203 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 06:42:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:00,205 INFO L225 Difference]: With dead ends: 314 [2020-09-25 06:42:00,205 INFO L226 Difference]: Without dead ends: 288 [2020-09-25 06:42:00,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 06:42:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-09-25 06:42:00,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 261. [2020-09-25 06:42:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-09-25 06:42:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 288 transitions. [2020-09-25 06:42:00,214 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 288 transitions. Word has length 79 [2020-09-25 06:42:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:00,214 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 288 transitions. [2020-09-25 06:42:00,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 06:42:00,214 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 288 transitions. [2020-09-25 06:42:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 06:42:00,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:00,216 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:42:00,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 06:42:00,216 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:00,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:00,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1435872375, now seen corresponding path program 2 times [2020-09-25 06:42:00,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:00,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368246194] [2020-09-25 06:42:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:00,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 06:42:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2131 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:42:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:42:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:02,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:42:02,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:02,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:42:02,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368246194] [2020-09-25 06:42:02,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:42:02,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 06:42:02,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777700849] [2020-09-25 06:42:02,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 06:42:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:42:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 06:42:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:42:02,707 INFO L87 Difference]: Start difference. First operand 261 states and 288 transitions. Second operand 16 states.