/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=1.0 --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 08:59:19,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:19,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:19,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:19,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:19,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:19,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:19,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:19,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:19,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:19,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:19,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:19,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:19,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:19,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:19,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:19,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:19,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:19,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:19,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:19,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:19,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:19,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:19,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:19,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:19,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:19,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:19,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:19,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:19,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:19,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:19,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:19,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:19,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:19,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:19,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:19,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:19,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:19,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:19,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:19,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:19,374 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 08:59:19,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:19,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:19,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:19,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:19,422 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:19,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:19,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:19,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:19,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:19,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:19,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:19,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:19,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:19,426 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:19,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:19,426 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:19,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:19,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:19,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:19,427 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:19,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:19,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:19,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:19,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:19,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:19,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:19,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:19,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:19,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:19,429 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 08:59:19,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:19,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:19,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:19,910 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:19,910 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:19,911 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 08:59:20,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d428491e5/dc1e7c54a2d74751be93e514f30d0afa/FLAG94558b7d5 [2020-09-25 08:59:20,596 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:20,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2020-09-25 08:59:20,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d428491e5/dc1e7c54a2d74751be93e514f30d0afa/FLAG94558b7d5 [2020-09-25 08:59:20,865 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d428491e5/dc1e7c54a2d74751be93e514f30d0afa [2020-09-25 08:59:20,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:20,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:20,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:20,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:20,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:20,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:20" (1/1) ... [2020-09-25 08:59:20,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:20, skipping insertion in model container [2020-09-25 08:59:20,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:20" (1/1) ... [2020-09-25 08:59:20,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:20,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:21,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:21,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:21,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:21,552 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:21,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21 WrapperNode [2020-09-25 08:59:21,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:21,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:21,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:21,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:21,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (1/1) ... [2020-09-25 08:59:21,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:21,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:21,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:21,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:21,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (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 08:59:21,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:21,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:21,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 08:59:21,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 08:59:21,715 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 08:59:21,715 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 08:59:21,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 08:59:21,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2020-09-25 08:59:21,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:21,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:21,717 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:21,723 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:21,724 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:21,725 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:21,726 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:21,728 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:21,729 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:21,730 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:21,731 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 08:59:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:22,114 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 08:59:22,366 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:22,366 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:59:22,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:22 BoogieIcfgContainer [2020-09-25 08:59:22,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:22,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:22,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:22,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:22,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:20" (1/3) ... [2020-09-25 08:59:22,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777045d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:22, skipping insertion in model container [2020-09-25 08:59:22,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:21" (2/3) ... [2020-09-25 08:59:22,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@777045d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:22, skipping insertion in model container [2020-09-25 08:59:22,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:22" (3/3) ... [2020-09-25 08:59:22,380 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2020-09-25 08:59:22,391 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:22,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:59:22,420 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:59:22,447 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:22,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:22,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:22,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:22,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:22,447 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:22,447 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:22,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2020-09-25 08:59:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 08:59:22,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:22,480 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 08:59:22,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:22,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:22,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1728925643, now seen corresponding path program 1 times [2020-09-25 08:59:22,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:22,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454817409] [2020-09-25 08:59:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:22,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:23,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:59:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-09-25 08:59:23,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:23,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 08:59:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:23,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:23,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:23,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:23,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:59:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:23,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:23,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:23,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:23,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:23,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:23,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:23,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:23,482 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 08:59:23,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454817409] [2020-09-25 08:59:23,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:23,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:59:23,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659764812] [2020-09-25 08:59:23,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:59:23,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:59:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:59:23,514 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 4 states. [2020-09-25 08:59:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:23,708 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-25 08:59:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:23,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-25 08:59:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:23,726 INFO L225 Difference]: With dead ends: 118 [2020-09-25 08:59:23,727 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 08:59:23,731 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 08:59:23,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 08:59:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2020-09-25 08:59:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 08:59:23,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-09-25 08:59:23,785 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 27 [2020-09-25 08:59:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:23,786 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-09-25 08:59:23,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:59:23,786 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-09-25 08:59:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 08:59:23,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:23,788 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 08:59:23,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:23,788 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1737237332, now seen corresponding path program 1 times [2020-09-25 08:59:23,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:23,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330055955] [2020-09-25 08:59:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:23,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:59:24,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 663 [2020-09-25 08:59:24,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:59:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:24,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:59:24,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:24,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:24,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:24,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:24,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:24,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:24,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:24,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:24,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:24,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 08:59:24,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:24,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:24,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:24,643 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 08:59:24,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330055955] [2020-09-25 08:59:24,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:24,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:59:24,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251267717] [2020-09-25 08:59:24,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:24,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:24,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:24,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:24,648 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 6 states. [2020-09-25 08:59:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:24,910 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2020-09-25 08:59:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:24,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 08:59:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:24,913 INFO L225 Difference]: With dead ends: 74 [2020-09-25 08:59:24,913 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 08:59:24,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:59:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 08:59:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2020-09-25 08:59:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 08:59:24,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-09-25 08:59:24,931 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 27 [2020-09-25 08:59:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:24,931 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-09-25 08:59:24,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:24,931 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-09-25 08:59:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 08:59:24,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:24,933 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 08:59:24,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:24,933 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash 278069346, now seen corresponding path program 1 times [2020-09-25 08:59:24,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:24,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832833977] [2020-09-25 08:59:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:24,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:25,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:29,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:29,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:59:29,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:59:29,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:59:29,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:29,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:59:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:30,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:30,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:30,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:30,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:59:30,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 08:59:30,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:59:30,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:59:30,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 08:59:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:30,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:30,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:30,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:59:30,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:30,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:59:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:30,259 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 08:59:30,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832833977] [2020-09-25 08:59:30,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:30,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:59:30,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572272733] [2020-09-25 08:59:30,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:59:30,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:30,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:59:30,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:59:30,262 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 11 states. [2020-09-25 08:59:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:30,760 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2020-09-25 08:59:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:59:30,761 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-09-25 08:59:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:30,763 INFO L225 Difference]: With dead ends: 110 [2020-09-25 08:59:30,763 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 08:59:30,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:59:30,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 08:59:30,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 65. [2020-09-25 08:59:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 08:59:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-25 08:59:30,774 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 45 [2020-09-25 08:59:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:30,774 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-25 08:59:30,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:59:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-25 08:59:30,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:59:30,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:30,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:30,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:30,779 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:30,779 INFO L82 PathProgramCache]: Analyzing trace with hash -182223992, now seen corresponding path program 1 times [2020-09-25 08:59:30,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:30,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683682566] [2020-09-25 08:59:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:30,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:35,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:35,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:59:35,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:35,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:59:35,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:35,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 08:59:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:59:35,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:35,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:35,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:35,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:35,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:35,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:35,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:59:35,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:35,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:59:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 08:59:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:59:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 08:59:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:36,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:59:36,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:59:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 08:59:36,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 08:59:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:36,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:36,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:59:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:36,277 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 08:59:36,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683682566] [2020-09-25 08:59:36,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:36,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:59:36,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646468146] [2020-09-25 08:59:36,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:59:36,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:59:36,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:59:36,281 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 13 states. [2020-09-25 08:59:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:36,740 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-09-25 08:59:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:59:36,740 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 75 [2020-09-25 08:59:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:36,742 INFO L225 Difference]: With dead ends: 128 [2020-09-25 08:59:36,742 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 08:59:36,743 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 08:59:36,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 08:59:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-09-25 08:59:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 08:59:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 08:59:36,756 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 75 [2020-09-25 08:59:36,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:36,757 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 08:59:36,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:59:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 08:59:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 08:59:36,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:36,760 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] [2020-09-25 08:59:36,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:36,760 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:36,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1955081336, now seen corresponding path program 2 times [2020-09-25 08:59:36,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:36,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131392436] [2020-09-25 08:59:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 08:59:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:59:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:59:41,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:41,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:41,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 08:59:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:59:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:41,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:41,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:41,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:41,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:41,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:41,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:59:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:41,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:42,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:59:42,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:42,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 08:59:42,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:42,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:42,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:42,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:42,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 08:59:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:59:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:42,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:59:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:42,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:42,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:42,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:42,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 08:59:42,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:42,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:42,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:42,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:59:42,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:42,394 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 08:59:42,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131392436] [2020-09-25 08:59:42,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:42,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:59:42,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760980518] [2020-09-25 08:59:42,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:59:42,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:42,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:59:42,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:59:42,398 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 10 states. [2020-09-25 08:59:42,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:42,933 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2020-09-25 08:59:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:59:42,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 08:59:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:42,935 INFO L225 Difference]: With dead ends: 114 [2020-09-25 08:59:42,935 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 08:59:42,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:59:42,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 08:59:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2020-09-25 08:59:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 08:59:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-09-25 08:59:42,958 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 87 [2020-09-25 08:59:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:42,961 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-09-25 08:59:42,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:59:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-09-25 08:59:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 08:59:42,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:42,963 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 08:59:42,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:42,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:42,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1382895989, now seen corresponding path program 1 times [2020-09-25 08:59:42,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:42,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924104416] [2020-09-25 08:59:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:43,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:47,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:47,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:59:47,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:59:47,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:59:47,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:47,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:47,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 08:59:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 08:59:47,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:48,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:48,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:48,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:48,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:48,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:48,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:48,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:48,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:48,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 08:59:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 08:59:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:48,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:59:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 08:59:48,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:48,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 08:59:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:48,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:48,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:48,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:48,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:48,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:59:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:59:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:48,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 08:59:48,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:48,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:59:48,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:48,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:59:48,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:48,422 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 08:59:48,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924104416] [2020-09-25 08:59:48,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:48,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:59:48,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904889709] [2020-09-25 08:59:48,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:59:48,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:48,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:59:48,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:48,425 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 8 states. [2020-09-25 08:59:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:48,683 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2020-09-25 08:59:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:48,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-09-25 08:59:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:48,685 INFO L225 Difference]: With dead ends: 140 [2020-09-25 08:59:48,685 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 08:59:48,686 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 08:59:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 08:59:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 08:59:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 08:59:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-09-25 08:59:48,697 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 88 [2020-09-25 08:59:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:48,697 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-09-25 08:59:48,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:59:48,703 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-09-25 08:59:48,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 08:59:48,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:48,708 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 08:59:48,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:59:48,709 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash 131916194, now seen corresponding path program 1 times [2020-09-25 08:59:48,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:48,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061566267] [2020-09-25 08:59:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 08:59:54,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:54,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5385 [2020-09-25 08:59:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:54,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 08:59:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 08:59:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 08:59:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:54,883 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2020-09-25 08:59:55,064 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-09-25 08:59:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:55,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:55,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:55,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:55,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:59:55,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:55,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:55,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:55,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:59:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:55,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:56,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 961 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:56,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:59:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:56,871 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-09-25 08:59:57,261 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-09-25 08:59:57,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-25 08:59:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:57,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:57,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:57,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:59:57,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:57,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 08:59:57,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:57,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:59:57,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:59:57,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:59:57,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:58,736 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-09-25 08:59:58,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 08:59:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:58,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:58,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 08:59:58,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:58,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 08:59:58,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:58,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:59:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 08:59:58,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 08:59:58,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:59,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061566267] [2020-09-25 08:59:59,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:59,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 08:59:59,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012624905] [2020-09-25 08:59:59,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 08:59:59,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:59,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 08:59:59,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:59:59,134 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 27 states. [2020-09-25 08:59:59,997 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-25 09:00:00,359 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-25 09:00:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:01,929 INFO L93 Difference]: Finished difference Result 176 states and 190 transitions. [2020-09-25 09:00:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 09:00:01,930 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 89 [2020-09-25 09:00:01,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:01,932 INFO L225 Difference]: With dead ends: 176 [2020-09-25 09:00:01,932 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 09:00:01,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=224, Invalid=1938, Unknown=0, NotChecked=0, Total=2162 [2020-09-25 09:00:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 09:00:01,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-09-25 09:00:01,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 09:00:01,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2020-09-25 09:00:01,944 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 89 [2020-09-25 09:00:01,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:01,944 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2020-09-25 09:00:01,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 09:00:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2020-09-25 09:00:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 09:00:01,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:01,946 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 09:00:01,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:00:01,946 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:01,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:01,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1167974453, now seen corresponding path program 1 times [2020-09-25 09:00:01,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:01,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189917936] [2020-09-25 09:00:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:05,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking...