/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-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:41:21,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:41:21,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:41:21,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:41:21,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:41:21,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:41:21,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:41:21,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:41:21,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:41:21,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:41:21,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:41:21,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:41:21,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:41:21,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:41:21,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:41:21,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:41:21,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:41:21,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:41:21,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:41:21,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:41:21,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:41:21,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:41:21,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:41:21,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:41:21,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:41:21,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:41:21,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:41:21,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:41:21,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:41:21,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:41:21,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:41:21,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:41:21,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:41:21,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:41:21,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:41:21,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:41:21,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:41:21,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:41:21,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:41:21,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:41:21,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:41:21,871 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 06:41:21,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:41:21,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:41:21,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:41:21,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:41:21,920 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:41:21,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:41:21,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:41:21,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:41:21,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:41:21,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:41:21,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:41:21,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:41:21,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:41:21,924 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:41:21,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:41:21,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:41:21,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:41:21,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:41:21,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:41:21,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:41:21,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:41:21,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:21,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:41:21,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:41:21,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:41:21,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:41:21,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:41:21,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:41:21,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:41:21,927 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 06:41:22,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:41:22,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:41:22,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:41:22,430 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:41:22,431 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:41:22,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 06:41:22,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b086be0/0cb9bdeb7f8a48afaccbf3657b384105/FLAG8708d2d4b [2020-09-25 06:41:23,172 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:41:23,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 06:41:23,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b086be0/0cb9bdeb7f8a48afaccbf3657b384105/FLAG8708d2d4b [2020-09-25 06:41:23,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a7b086be0/0cb9bdeb7f8a48afaccbf3657b384105 [2020-09-25 06:41:23,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:41:23,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:41:23,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:23,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:41:23,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:41:23,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:23" (1/1) ... [2020-09-25 06:41:23,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec993ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:23, skipping insertion in model container [2020-09-25 06:41:23,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:41:23" (1/1) ... [2020-09-25 06:41:23,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:41:23,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:41:24,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:24,083 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:41:24,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:41:24,198 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:41:24,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24 WrapperNode [2020-09-25 06:41:24,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:41:24,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:41:24,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:41:24,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:41:24,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... [2020-09-25 06:41:24,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:41:24,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:41:24,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:41:24,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:41:24,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:41:24,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:41:24,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:41:24,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 06:41:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:41:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:41:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 06:41:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 06:41:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 06:41:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 06:41:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 06:41:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 06:41:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 06:41:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 06:41:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 06:41:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 06:41:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 06:41:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 06:41:24,372 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 06:41:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 06:41:24,373 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 06:41:24,374 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 06:41:24,375 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 06:41:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 06:41:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 06:41:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 06:41:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 06:41:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 06:41:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 06:41:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 06:41:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 06:41:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 06:41:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:41:24,380 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 06:41:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:41:24,381 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 06:41:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 06:41:24,382 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 06:41:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 06:41:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 06:41:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:41:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 06:41:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 06:41:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 06:41:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 06:41:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 06:41:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 06:41:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 06:41:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 06:41:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 06:41:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 06:41:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 06:41:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 06:41:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 06:41:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:41:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:41:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:41:24,396 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:41:24,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 06:41:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:41:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:41:24,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:41:24,773 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 06:41:24,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:41:24,995 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 06:41:25,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:25 BoogieIcfgContainer [2020-09-25 06:41:25,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:41:25,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:41:25,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:41:25,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:41:25,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:41:23" (1/3) ... [2020-09-25 06:41:25,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dd8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:25, skipping insertion in model container [2020-09-25 06:41:25,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:41:24" (2/3) ... [2020-09-25 06:41:25,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dd8420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:41:25, skipping insertion in model container [2020-09-25 06:41:25,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:41:25" (3/3) ... [2020-09-25 06:41:25,011 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 06:41:25,024 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:41:25,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:41:25,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:41:25,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:41:25,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:41:25,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:41:25,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:41:25,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:41:25,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:41:25,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:41:25,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:41:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 06:41:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:41:25,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:25,132 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] [2020-09-25 06:41:25,133 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 06:41:25,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:25,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110565377] [2020-09-25 06:41:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:25,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:25,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:25,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:41:26,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:26,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-09-25 06:41:26,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 06:41:26,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:26,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:41:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:26,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:26,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:41:26,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:26,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:26,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:26,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:41:26,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:26,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:26,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:26,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:26,289 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 06:41:26,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110565377] [2020-09-25 06:41:26,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:26,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:41:26,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081925397] [2020-09-25 06:41:26,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:41:26,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:41:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:41:26,325 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 06:41:26,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:26,536 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 06:41:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:41:26,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 06:41:26,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:26,557 INFO L225 Difference]: With dead ends: 118 [2020-09-25 06:41:26,557 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 06:41:26,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:41:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 06:41:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 06:41:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 06:41:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 06:41:26,623 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 06:41:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:26,624 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 06:41:26,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:41:26,624 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 06:41:26,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 06:41:26,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:26,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:26,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:41:26,627 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:26,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:26,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 06:41:26,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:26,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598653626] [2020-09-25 06:41:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:26,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:27,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:41:27,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:41:27,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-25 06:41:27,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:27,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:27,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:41:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:27,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:41:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:27,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:27,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:27,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:27,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:27,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:27,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:27,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:27,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:27,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:27,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:27,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 06:41:27,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:27,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:27,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:41:27,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:27,467 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 06:41:27,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598653626] [2020-09-25 06:41:27,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:27,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 06:41:27,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648795527] [2020-09-25 06:41:27,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:41:27,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:27,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:41:27,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:41:27,471 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-09-25 06:41:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:27,697 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-09-25 06:41:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:27,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 06:41:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:27,699 INFO L225 Difference]: With dead ends: 74 [2020-09-25 06:41:27,699 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 06:41:27,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:27,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 06:41:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-09-25 06:41:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 06:41:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 06:41:27,718 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 06:41:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:27,718 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 06:41:27,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:41:27,719 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 06:41:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 06:41:27,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:27,720 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] [2020-09-25 06:41:27,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:41:27,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 06:41:27,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:27,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190864095] [2020-09-25 06:41:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:27,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:28,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:32,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:41:32,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:32,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:41:32,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:32,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:32,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 06:41:32,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 06:41:32,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:32,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:32,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:32,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:32,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:32,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:32,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:32,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:32,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:32,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:32,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:32,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:32,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:41:32,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:32,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:32,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:41:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:32,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:32,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:32,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:32,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:41:32,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:32,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:32,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:41:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:41:32,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190864095] [2020-09-25 06:41:32,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:32,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 06:41:32,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866332782] [2020-09-25 06:41:32,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:32,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:32,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:32,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:32,953 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 9 states. [2020-09-25 06:41:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:33,252 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-09-25 06:41:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:41:33,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-25 06:41:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:33,254 INFO L225 Difference]: With dead ends: 76 [2020-09-25 06:41:33,254 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 06:41:33,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 06:41:33,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 06:41:33,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2020-09-25 06:41:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 06:41:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-25 06:41:33,265 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 45 [2020-09-25 06:41:33,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:33,265 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-25 06:41:33,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:33,265 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-25 06:41:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 06:41:33,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:33,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:33,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:41:33,269 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:33,270 INFO L82 PathProgramCache]: Analyzing trace with hash -512695656, now seen corresponding path program 2 times [2020-09-25 06:41:33,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:33,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350398931] [2020-09-25 06:41:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:41:38,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:41:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 06:41:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 06:41:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:38,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:41:38,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:38,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:38,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:41:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:38,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:38,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:41:38,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:38,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:38,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 06:41:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:38,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:38,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:38,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:38,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 06:41:38,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 06:41:38,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:38,680 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 06:41:38,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350398931] [2020-09-25 06:41:38,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:38,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 06:41:38,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502532248] [2020-09-25 06:41:38,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:41:38,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:38,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:41:38,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:41:38,685 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 10 states. [2020-09-25 06:41:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:39,402 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-09-25 06:41:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:41:39,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-25 06:41:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:39,404 INFO L225 Difference]: With dead ends: 105 [2020-09-25 06:41:39,404 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 06:41:39,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:41:39,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 06:41:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2020-09-25 06:41:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 06:41:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 75 transitions. [2020-09-25 06:41:39,426 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 75 transitions. Word has length 63 [2020-09-25 06:41:39,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:39,428 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 75 transitions. [2020-09-25 06:41:39,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:41:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 75 transitions. [2020-09-25 06:41:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 06:41:39,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:39,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:39,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:41:39,431 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash -574571413, now seen corresponding path program 1 times [2020-09-25 06:41:39,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:39,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517090432] [2020-09-25 06:41:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:39,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:40,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:40,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 06:41:44,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:41:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 06:41:44,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:41:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:41:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:44,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:44,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:41:44,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:41:44,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:41:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:44,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 06:41:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:44,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:41:44,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:44,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:41:44,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:44,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 06:41:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:44,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:44,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:41:44,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:44,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:41:44,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:44,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 06:41:44,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517090432] [2020-09-25 06:41:44,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:41:44,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 06:41:44,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473774387] [2020-09-25 06:41:44,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 06:41:44,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:44,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 06:41:44,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 06:41:44,651 INFO L87 Difference]: Start difference. First operand 70 states and 75 transitions. Second operand 9 states. [2020-09-25 06:41:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:44,903 INFO L93 Difference]: Finished difference Result 125 states and 135 transitions. [2020-09-25 06:41:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:41:44,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-09-25 06:41:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:44,904 INFO L225 Difference]: With dead ends: 125 [2020-09-25 06:41:44,905 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 06:41:44,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:41:44,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 06:41:44,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2020-09-25 06:41:44,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 06:41:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2020-09-25 06:41:44,916 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 64 [2020-09-25 06:41:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:44,916 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2020-09-25 06:41:44,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 06:41:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2020-09-25 06:41:44,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 06:41:44,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:44,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:44,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:41:44,919 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:44,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:44,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1080115579, now seen corresponding path program 1 times [2020-09-25 06:41:44,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:44,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859870091] [2020-09-25 06:41:44,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:45,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 06:41:45,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 898 [2020-09-25 06:41:45,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:45,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:41:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:41:45,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:41:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:45,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:45,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:45,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:45,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:45,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:45,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:45,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:45,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:45,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:45,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:45,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:41:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:41:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:41:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:41:46,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:46,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 06:41:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:46,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:41:46,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:41:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:46,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 06:41:46,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 06:41:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:46,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:41:46,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:41:46,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:46,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:46,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:41:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:46,229 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 06:41:46,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859870091] [2020-09-25 06:41:46,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:46,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 06:41:46,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656596060] [2020-09-25 06:41:46,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 06:41:46,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 06:41:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 06:41:46,234 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 13 states. [2020-09-25 06:41:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:46,680 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2020-09-25 06:41:46,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 06:41:46,681 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 06:41:46,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:46,683 INFO L225 Difference]: With dead ends: 142 [2020-09-25 06:41:46,683 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 06:41:46,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-09-25 06:41:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 06:41:46,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2020-09-25 06:41:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 06:41:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-09-25 06:41:46,705 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 76 [2020-09-25 06:41:46,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:46,709 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-09-25 06:41:46,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 06:41:46,709 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-09-25 06:41:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 06:41:46,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:46,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 06:41:46,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:41:46,718 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:46,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1382895989, now seen corresponding path program 2 times [2020-09-25 06:41:46,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:46,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722952765] [2020-09-25 06:41:46,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:48,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:51,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 06:41:51,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:41:51,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:41:51,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:51,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:41:51,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:41:51,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:51,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:51,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:51,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:41:51,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:51,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:51,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:51,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:51,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:51,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:52,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 06:41:52,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:41:52,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 06:41:52,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:52,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:41:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 06:41:52,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 06:41:52,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:52,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 06:41:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:52,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:52,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:41:52,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:52,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 06:41:52,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:52,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:52,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:41:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:52,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:52,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:41:52,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:52,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:41:52,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:52,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:52,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:41:52,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:52,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 06:41:52,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722952765] [2020-09-25 06:41:52,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:52,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:41:52,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469324231] [2020-09-25 06:41:52,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:41:52,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:52,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:41:52,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:41:52,195 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 8 states. [2020-09-25 06:41:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:41:52,418 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-09-25 06:41:52,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:41:52,419 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-09-25 06:41:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:41:52,420 INFO L225 Difference]: With dead ends: 140 [2020-09-25 06:41:52,420 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 06:41:52,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:41:52,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 06:41:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 06:41:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 06:41:52,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 06:41:52,429 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 88 [2020-09-25 06:41:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:41:52,429 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 06:41:52,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:41:52,429 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 06:41:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 06:41:52,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:41:52,431 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:41:52,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 06:41:52,431 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:41:52,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:41:52,432 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 06:41:52,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:41:52,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702612471] [2020-09-25 06:41:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:41:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:53,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:57,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5677 [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 06:41:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 06:41:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:41:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:41:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:41:58,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 06:41:58,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:58,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:58,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:58,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:41:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:41:58,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 06:41:58,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 06:41:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:41:58,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:41:58,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:58,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 06:41:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:58,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:58,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 06:41:58,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:58,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 06:41:58,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:58,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 06:41:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:41:58,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 06:41:58,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:41:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:41:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:41:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:41:59,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:41:59,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 06:41:59,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:41:59,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 06:41:59,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:41:59,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:41:59,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:41:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:41:59,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:41:59,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:41:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 06:41:59,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702612471] [2020-09-25 06:41:59,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:41:59,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 06:41:59,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310191115] [2020-09-25 06:41:59,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 06:41:59,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:41:59,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 06:41:59,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:41:59,158 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 19 states. [2020-09-25 06:42:00,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:42:00,473 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2020-09-25 06:42:00,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 06:42:00,474 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-09-25 06:42:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:42:00,475 INFO L225 Difference]: With dead ends: 122 [2020-09-25 06:42:00,475 INFO L226 Difference]: Without dead ends: 88 [2020-09-25 06:42:00,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 06:42:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-25 06:42:00,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2020-09-25 06:42:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 06:42:00,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-25 06:42:00,483 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 89 [2020-09-25 06:42:00,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:42:00,484 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-25 06:42:00,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 06:42:00,484 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-25 06:42:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 06:42:00,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:42:00,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 06:42:00,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 06:42:00,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:42:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:42:00,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 06:42:00,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:42:00,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795735944] [2020-09-25 06:42:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:42:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:00,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:05,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 06:42:05,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 06:42:05,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 06:42:05,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:42:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:05,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:42:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:42:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:42:05,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:05,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:42:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:42:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:42:05,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 06:42:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:42:05,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:06,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:42:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:42:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 06:42:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1235 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:42:07,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0