/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:44:17,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:44:17,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:44:17,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:44:17,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:44:17,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:44:17,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:44:17,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:44:17,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:44:17,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:44:17,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:44:17,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:44:17,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:44:17,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:44:17,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:44:17,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:44:17,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:44:17,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:44:17,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:44:17,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:44:17,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:44:17,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:44:17,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:44:17,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:44:17,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:44:17,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:44:17,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:44:17,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:44:17,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:44:17,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:44:17,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:44:17,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:44:17,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:44:17,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:44:17,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:44:17,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:44:17,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:44:17,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:44:17,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:44:17,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:44:17,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:44:17,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:44:17,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:44:17,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:44:17,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:44:17,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:44:17,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:44:17,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:44:17,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:44:17,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:44:17,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:44:17,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:44:17,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:44:17,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:44:17,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:44:17,862 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:44:17,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:44:17,862 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:44:17,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:44:17,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:44:17,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:44:17,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:44:17,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:44:17,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:44:17,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:44:17,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:44:17,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:44:18,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:44:18,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:44:18,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:44:18,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:44:18,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:44:18,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-28 14:44:18,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e110e58a0/5a3266e65ec54ad09a0fed57ee1eb1d0/FLAG2f98d63f6 [2020-10-28 14:44:19,196 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:44:19,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-10-28 14:44:19,211 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e110e58a0/5a3266e65ec54ad09a0fed57ee1eb1d0/FLAG2f98d63f6 [2020-10-28 14:44:19,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e110e58a0/5a3266e65ec54ad09a0fed57ee1eb1d0 [2020-10-28 14:44:19,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:44:19,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:44:19,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:19,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:44:19,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:44:19,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:19" (1/1) ... [2020-10-28 14:44:19,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@667c4a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:19, skipping insertion in model container [2020-10-28 14:44:19,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:44:19" (1/1) ... [2020-10-28 14:44:19,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:44:19,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:44:19,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:19,884 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:44:19,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:44:20,057 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:44:20,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20 WrapperNode [2020-10-28 14:44:20,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:44:20,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:44:20,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:44:20,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:44:20,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... [2020-10-28 14:44:20,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:44:20,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:44:20,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:44:20,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:44:20,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:44:20,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:44:20,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-28 14:44:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-28 14:44:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-28 14:44:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-10-28 14:44:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-10-28 14:44:20,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:44:20,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 14:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:44:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:44:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:44:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-28 14:44:20,259 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:44:20,260 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:44:20,261 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:44:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:44:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:44:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:44:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:44:20,262 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:44:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:44:20,265 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:44:20,266 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:44:20,267 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:44:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:44:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:44:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:44:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:44:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:44:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:44:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:44:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:44:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:44:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:44:20,272 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:44:20,273 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:44:20,274 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:44:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:44:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:44:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:44:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:44:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:44:20,278 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:44:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:44:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:44:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:44:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:44:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-10-28 14:44:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-10-28 14:44:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:44:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:44:20,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:44:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:44:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:44:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:44:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:44:20,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:44:20,831 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:44:20,831 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:44:20,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:20 BoogieIcfgContainer [2020-10-28 14:44:20,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:44:20,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:44:20,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:44:20,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:44:20,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:44:19" (1/3) ... [2020-10-28 14:44:20,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c2960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:20, skipping insertion in model container [2020-10-28 14:44:20,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:44:20" (2/3) ... [2020-10-28 14:44:20,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c2960b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:44:20, skipping insertion in model container [2020-10-28 14:44:20,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:44:20" (3/3) ... [2020-10-28 14:44:20,843 INFO L111 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-10-28 14:44:20,856 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:44:20,862 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:44:20,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:44:20,906 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:44:20,906 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:44:20,907 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:44:20,907 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:44:20,907 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:44:20,907 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:44:20,907 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:44:20,907 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:44:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-28 14:44:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-28 14:44:20,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:20,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:20,938 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:20,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1132079083, now seen corresponding path program 1 times [2020-10-28 14:44:20,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:20,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113206692] [2020-10-28 14:44:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:21,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:21,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 14:44:22,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-28 14:44:22,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 14:44:22,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 14:44:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:22,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:22,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:22,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:22,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:22,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:44:22,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:22,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:44:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:22,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 14:44:22,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:22,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:22,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 14:44:22,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:22,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:22,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:22,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:22,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:22,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:44:22,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:22,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:22,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 14:44:22,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:44:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 14:44:22,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113206692] [2020-10-28 14:44:22,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:22,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:44:22,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329814721] [2020-10-28 14:44:22,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:44:22,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:22,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:44:22,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:44:22,520 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-28 14:44:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:22,782 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-28 14:44:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:44:22,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-28 14:44:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:22,794 INFO L225 Difference]: With dead ends: 65 [2020-10-28 14:44:22,794 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 14:44:22,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:44:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 14:44:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-28 14:44:22,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 14:44:22,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-28 14:44:22,849 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 47 [2020-10-28 14:44:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:22,852 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-28 14:44:22,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:44:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-28 14:44:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:44:22,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:22,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:22,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:44:22,855 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:22,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1798844206, now seen corresponding path program 1 times [2020-10-28 14:44:22,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:22,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838024062] [2020-10-28 14:44:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:22,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:22,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:44:25,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2330 [2020-10-28 14:44:25,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:44:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 14:44:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:25,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:25,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:25,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:25,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:44:25,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:25,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:44:25,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:25,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 14:44:25,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:25,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:25,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:44:25,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:25,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:25,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:25,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:25,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:25,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:25,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 14:44:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:25,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:44:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 14:44:25,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838024062] [2020-10-28 14:44:25,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:25,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 14:44:25,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243129732] [2020-10-28 14:44:25,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:44:25,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:25,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:44:25,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:44:25,632 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 11 states. [2020-10-28 14:44:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:26,376 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2020-10-28 14:44:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:44:26,377 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-28 14:44:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:26,382 INFO L225 Difference]: With dead ends: 55 [2020-10-28 14:44:26,382 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:44:26,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:44:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:44:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-10-28 14:44:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 14:44:26,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-10-28 14:44:26,400 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 49 [2020-10-28 14:44:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:26,401 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-10-28 14:44:26,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:44:26,401 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-10-28 14:44:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 14:44:26,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:26,403 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:26,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:44:26,404 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:26,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:26,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2057009644, now seen corresponding path program 1 times [2020-10-28 14:44:26,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:26,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551449680] [2020-10-28 14:44:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:26,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:26,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 14:44:28,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:28,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-10-28 14:44:28,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 14:44:28,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 14:44:28,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:28,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:28,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:28,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:28,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:44:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:28,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 14:44:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:44:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:28,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:44:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:28,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 14:44:28,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 14:44:28,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:28,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:28,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:28,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 14:44:28,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551449680] [2020-10-28 14:44:28,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:44:28,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 14:44:28,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738860977] [2020-10-28 14:44:28,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:44:28,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:28,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:44:28,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:44:28,347 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 9 states. [2020-10-28 14:44:28,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:28,981 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-28 14:44:28,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:44:28,982 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-28 14:44:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:28,983 INFO L225 Difference]: With dead ends: 70 [2020-10-28 14:44:28,983 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 14:44:28,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:44:28,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 14:44:28,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-28 14:44:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-28 14:44:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-28 14:44:28,995 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 49 [2020-10-28 14:44:28,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:28,995 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-28 14:44:28,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:44:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-28 14:44:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:44:28,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:28,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-28 14:44:28,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:44:28,998 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash 568066902, now seen corresponding path program 1 times [2020-10-28 14:44:28,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:28,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386299666] [2020-10-28 14:44:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:29,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:31,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:44:34,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:34,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 14:44:34,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 14:44:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:44:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:44:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:34,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:44:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:44:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:34,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:44:34,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 14:44:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:34,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 14:44:34,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:34,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:34,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:34,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:34,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:44:34,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:34,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:34,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:44:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:34,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:34,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:44:34,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 14:44:34,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:34,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:34,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:34,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:34,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:34,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:34,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:44:34,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:34,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:44:34,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386299666] [2020-10-28 14:44:34,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:34,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:44:34,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695153940] [2020-10-28 14:44:34,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:44:34,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:34,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:44:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:44:34,302 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-10-28 14:44:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:34,595 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2020-10-28 14:44:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 14:44:34,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-28 14:44:34,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:34,596 INFO L225 Difference]: With dead ends: 74 [2020-10-28 14:44:34,597 INFO L226 Difference]: Without dead ends: 43 [2020-10-28 14:44:34,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:44:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-28 14:44:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-28 14:44:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 14:44:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-28 14:44:34,607 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 52 [2020-10-28 14:44:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:34,608 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-28 14:44:34,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:44:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-28 14:44:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:44:34,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:34,609 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-28 14:44:34,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:44:34,610 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:34,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1677512552, now seen corresponding path program 1 times [2020-10-28 14:44:34,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:34,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684628276] [2020-10-28 14:44:34,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:34,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2587 [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 14:44:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 14:44:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:37,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 14:44:37,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:37,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:37,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:37,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:37,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:37,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:37,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:37,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:37,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:37,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:37,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:37,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 14:44:37,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:37,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:44:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 14:44:38,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684628276] [2020-10-28 14:44:38,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:38,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 14:44:38,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12764639] [2020-10-28 14:44:38,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 14:44:38,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:38,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 14:44:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 14:44:38,148 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 20 states. [2020-10-28 14:44:39,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:39,610 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-28 14:44:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:44:39,613 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-28 14:44:39,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:39,614 INFO L225 Difference]: With dead ends: 63 [2020-10-28 14:44:39,614 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:44:39,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2020-10-28 14:44:39,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:44:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-28 14:44:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:44:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-28 14:44:39,632 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 52 [2020-10-28 14:44:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:39,633 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-28 14:44:39,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 14:44:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-28 14:44:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 14:44:39,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:39,638 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-28 14:44:39,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:44:39,639 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1419347114, now seen corresponding path program 1 times [2020-10-28 14:44:39,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:39,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648753141] [2020-10-28 14:44:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:39,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 864 [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:40,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 14:44:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:44:40,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:40,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:40,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:40,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:40,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:40,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:44:40,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:40,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 14:44:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 14:44:40,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:40,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:40,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 14:44:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:40,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 14:44:40,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648753141] [2020-10-28 14:44:40,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:40,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:44:40,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942303871] [2020-10-28 14:44:40,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:44:40,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:44:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:44:40,882 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 10 states. [2020-10-28 14:44:41,434 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-28 14:44:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:41,541 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 14:44:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:44:41,543 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-28 14:44:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:41,544 INFO L225 Difference]: With dead ends: 61 [2020-10-28 14:44:41,545 INFO L226 Difference]: Without dead ends: 47 [2020-10-28 14:44:41,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:44:41,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-28 14:44:41,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-28 14:44:41,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 14:44:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2020-10-28 14:44:41,556 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 52 [2020-10-28 14:44:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:41,556 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2020-10-28 14:44:41,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:44:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2020-10-28 14:44:41,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:44:41,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:41,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2020-10-28 14:44:41,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:44:41,558 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:41,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash 970297772, now seen corresponding path program 2 times [2020-10-28 14:44:41,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:41,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281591182] [2020-10-28 14:44:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 14:44:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 14:44:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 14:44:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:42,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:42,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:42,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:42,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:44:42,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:42,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:42,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:42,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 14:44:42,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:44:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:42,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 14:44:42,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:42,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:42,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:42,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 14:44:42,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:42,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:43,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:43,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:43,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 14:44:43,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:43,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:43,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:43,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:43,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:43,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:44:43,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:43,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 14:44:43,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:43,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:43,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:44:43,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:43,645 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2020-10-28 14:44:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 14:44:44,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281591182] [2020-10-28 14:44:44,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:44,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 14:44:44,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432042112] [2020-10-28 14:44:44,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 14:44:44,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:44,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 14:44:44,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-28 14:44:44,127 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand 21 states. [2020-10-28 14:44:44,710 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-28 14:44:46,046 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-28 14:44:46,268 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2020-10-28 14:44:46,501 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-28 14:44:46,759 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-28 14:44:46,970 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-28 14:44:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:47,178 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-28 14:44:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 14:44:47,179 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-28 14:44:47,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:47,180 INFO L225 Difference]: With dead ends: 68 [2020-10-28 14:44:47,180 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 14:44:47,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 14:44:47,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 14:44:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2020-10-28 14:44:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 14:44:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-28 14:44:47,197 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 55 [2020-10-28 14:44:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:47,197 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-28 14:44:47,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 14:44:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-28 14:44:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 14:44:47,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:47,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2020-10-28 14:44:47,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:44:47,199 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:47,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:47,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1228463210, now seen corresponding path program 2 times [2020-10-28 14:44:47,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:47,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534436497] [2020-10-28 14:44:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:47,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:47,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 14:44:48,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:48,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-28 14:44:48,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 14:44:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 14:44:48,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 14:44:48,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:44:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:44:48,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:48,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:48,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 14:44:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:48,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:48,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:44:48,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:48,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:48,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 14:44:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:48,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:44:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:44:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:44:48,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 14:44:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:48,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:48,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:44:48,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:44:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:44:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 14:44:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 14:44:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 14:44:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:44:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 14:44:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 14:44:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:44:48,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:44:48,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:44:48,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 14:44:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 14:44:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 14:44:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:44:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 14:44:49,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534436497] [2020-10-28 14:44:49,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:44:49,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 14:44:49,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694431007] [2020-10-28 14:44:49,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 14:44:49,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:44:49,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 14:44:49,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 14:44:49,198 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 17 states. [2020-10-28 14:44:50,226 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-28 14:44:50,617 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-28 14:44:50,810 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-28 14:44:51,014 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-28 14:44:51,217 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-28 14:44:51,435 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-28 14:44:51,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:44:51,611 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-10-28 14:44:51,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 14:44:51,612 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-10-28 14:44:51,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:44:51,614 INFO L225 Difference]: With dead ends: 69 [2020-10-28 14:44:51,614 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:44:51,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 14:44:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:44:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-28 14:44:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 14:44:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-28 14:44:51,628 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 55 [2020-10-28 14:44:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:44:51,628 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-28 14:44:51,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 14:44:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-28 14:44:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 14:44:51,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:44:51,629 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:44:51,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:44:51,630 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:44:51,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:44:51,631 INFO L82 PathProgramCache]: Analyzing trace with hash 518301720, now seen corresponding path program 3 times [2020-10-28 14:44:51,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:44:51,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836176021] [2020-10-28 14:44:51,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:44:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:44:51,672 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:44:51,673 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:44:51,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 14:44:51,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:44:51 BoogieIcfgContainer [2020-10-28 14:44:51,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:44:51,701 INFO L168 Benchmark]: Toolchain (without parser) took 32265.47 ms. Allocated memory was 125.8 MB in the beginning and 465.6 MB in the end (delta: 339.7 MB). Free memory was 100.3 MB in the beginning and 395.4 MB in the end (delta: -295.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:51,702 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:44:51,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 617.33 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 77.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:51,703 INFO L168 Benchmark]: Boogie Preprocessor took 80.91 ms. Allocated memory is still 125.8 MB. Free memory was 77.5 MB in the beginning and 74.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:51,704 INFO L168 Benchmark]: RCFGBuilder took 688.22 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 74.9 MB in the beginning and 96.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:51,705 INFO L168 Benchmark]: TraceAbstraction took 30864.04 ms. Allocated memory was 154.1 MB in the beginning and 465.6 MB in the end (delta: 311.4 MB). Free memory was 95.7 MB in the beginning and 395.4 MB in the end (delta: -299.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:44:51,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 617.33 ms. Allocated memory is still 125.8 MB. Free memory was 99.6 MB in the beginning and 77.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.91 ms. Allocated memory is still 125.8 MB. Free memory was 77.5 MB in the beginning and 74.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 688.22 ms. Allocated memory was 125.8 MB in the beginning and 154.1 MB in the end (delta: 28.3 MB). Free memory was 74.9 MB in the beginning and 96.3 MB in the end (delta: -21.4 MB). Peak memory consumption was 8.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30864.04 ms. Allocated memory was 154.1 MB in the beginning and 465.6 MB in the end (delta: 311.4 MB). Free memory was 95.7 MB in the beginning and 395.4 MB in the end (delta: -299.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L533] mlist *head; [L554] int i; [L555] mlist *mylist, *temp; [L556] CALL insert_list(mylist,2) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND TRUE head==((void *)0) [L545] l->next = ((void *)0) [L550] head = l [L551] return 0; [L556] RET insert_list(mylist,2) [L557] CALL insert_list(mylist,5) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L557] RET insert_list(mylist,5) [L558] CALL insert_list(mylist,1) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L558] RET insert_list(mylist,1) [L559] CALL insert_list(mylist,3) [L542] l = (mlist*)malloc(sizeof(mlist)) [L543] l->key = k [L544] COND FALSE !(head==((void *)0)) [L547] l->key = k [L548] l->next = head [L550] head = l [L551] return 0; [L559] RET insert_list(mylist,3) [L560] CALL, EXPR search_list(head,2) [L535] l = head [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND TRUE l!=((void *)0) && l->key!=k [L537] EXPR l->next [L537] l = l->next [L536] l!=((void *)0) && l->key!=k [L536] EXPR l->key [L536] l!=((void *)0) && l->key!=k [L536] COND FALSE !(l!=((void *)0) && l->key!=k) [L539] return l; [L560] RET, EXPR search_list(head,2) [L560] temp = search_list(head,2) [L561] EXPR temp->key [L561] CALL __VERIFIER_assert(temp->key==1) [L14] COND TRUE !(cond) [L15] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list_search-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.7s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 241 SDtfs, 545 SDslu, 622 SDs, 0 SdLazy, 2104 SolverSat, 307 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 253 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 231850 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 211/267 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...