/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 17:05:25,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:05:25,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:05:25,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:05:25,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:05:25,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:05:25,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:05:25,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:05:25,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:05:25,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:05:25,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:05:25,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:05:25,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:05:25,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:05:25,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:05:25,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:05:25,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:05:25,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:05:25,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:05:25,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:05:25,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:05:25,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:05:25,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:05:25,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:05:25,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:05:25,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:05:25,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:05:25,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:05:25,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:05:25,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 17:05:25,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 17:05:25,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 17:05:25,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 17:05:25,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 17:05:25,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 17:05:25,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 17:05:25,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 17:05:25,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 17:05:25,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:05:25,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:05:25,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:05:25,701 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 [2020-08-18 17:05:25,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:05:25,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:05:25,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:05:25,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:05:25,724 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:05:25,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:05:25,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:05:25,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:05:25,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:05:25,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:05:25,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:05:25,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:05:25,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:05:25,726 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:05:25,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:05:25,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:05:25,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:05:25,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:05:25,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:05:25,727 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:05:25,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:05:25,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:05:25,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:05:25,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:05:25,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:05:25,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:05:25,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:05:25,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:05:25,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:05:25,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:05:26,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:05:26,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:05:26,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:05:26,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:05:26,045 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:05:26,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 17:05:26,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbe3d299/e08af8baebc343a1a9b793f583c3e15a/FLAGe4b91feb3 [2020-08-18 17:05:26,647 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:05:26,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 17:05:26,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbe3d299/e08af8baebc343a1a9b793f583c3e15a/FLAGe4b91feb3 [2020-08-18 17:05:26,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cbe3d299/e08af8baebc343a1a9b793f583c3e15a [2020-08-18 17:05:26,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:05:26,944 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:05:26,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:05:26,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:05:26,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:05:26,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:05:26" (1/1) ... [2020-08-18 17:05:26,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc90aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:26, skipping insertion in model container [2020-08-18 17:05:26,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:05:26" (1/1) ... [2020-08-18 17:05:26,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:05:27,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:05:27,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:05:27,558 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:05:27,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:05:27,704 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:05:27,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27 WrapperNode [2020-08-18 17:05:27,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:05:27,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:05:27,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:05:27,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:05:27,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (1/1) ... [2020-08-18 17:05:27,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:05:27,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:05:27,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:05:27,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:05:27,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (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 [2020-08-18 17:05:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:05:27,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:05:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 17:05:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 17:05:27,859 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 17:05:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-18 17:05:27,865 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-18 17:05:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-18 17:05:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-18 17:05:27,866 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-18 17:05:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-18 17:05:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-18 17:05:27,867 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-18 17:05:27,868 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-18 17:05:27,869 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-18 17:05:27,869 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-18 17:05:27,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:05:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:05:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 17:05:27,869 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 17:05:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 17:05:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 17:05:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 17:05:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 17:05:27,874 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 17:05:27,875 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 17:05:27,876 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 17:05:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 17:05:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 17:05:27,879 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 17:05:27,880 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 17:05:27,881 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 17:05:27,882 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 17:05:27,883 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 17:05:27,884 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-18 17:05:27,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:05:27,886 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-18 17:05:27,887 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:05:27,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:05:28,662 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:05:28,662 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-18 17:05:28,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:05:28 BoogieIcfgContainer [2020-08-18 17:05:28,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:05:28,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:05:28,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:05:28,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:05:28,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:05:26" (1/3) ... [2020-08-18 17:05:28,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e12a545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:05:28, skipping insertion in model container [2020-08-18 17:05:28,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:05:27" (2/3) ... [2020-08-18 17:05:28,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e12a545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:05:28, skipping insertion in model container [2020-08-18 17:05:28,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:05:28" (3/3) ... [2020-08-18 17:05:28,675 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-18 17:05:28,686 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:05:28,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:05:28,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:05:28,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:05:28,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:05:28,737 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:05:28,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:05:28,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:05:28,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:05:28,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:05:28,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:05:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 17:05:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 17:05:28,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:28,773 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:28,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-18 17:05:28,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:28,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819760298] [2020-08-18 17:05:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 17:05:29,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819760298] [2020-08-18 17:05:29,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:05:29,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:05:29,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114849862] [2020-08-18 17:05:29,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:05:29,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:29,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:05:29,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:05:29,334 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 17:05:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:29,789 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-18 17:05:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:05:29,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 17:05:29,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:29,806 INFO L225 Difference]: With dead ends: 343 [2020-08-18 17:05:29,806 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 17:05:29,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:05:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 17:05:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-18 17:05:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 17:05:29,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-18 17:05:29,894 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-18 17:05:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:29,895 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-18 17:05:29,895 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:05:29,895 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-18 17:05:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 17:05:29,903 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:29,904 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:29,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:05:29,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:29,905 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-18 17:05:29,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:29,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000428410] [2020-08-18 17:05:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 17:05:30,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000428410] [2020-08-18 17:05:30,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:05:30,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 17:05:30,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200319134] [2020-08-18 17:05:30,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 17:05:30,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 17:05:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-18 17:05:30,461 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-18 17:05:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:31,568 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-18 17:05:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 17:05:31,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-18 17:05:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:31,572 INFO L225 Difference]: With dead ends: 327 [2020-08-18 17:05:31,572 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 17:05:31,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-18 17:05:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 17:05:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-18 17:05:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 17:05:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-18 17:05:31,615 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-18 17:05:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:31,615 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-18 17:05:31,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 17:05:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-18 17:05:31,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:05:31,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:31,626 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:31,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:05:31,627 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:31,627 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-18 17:05:31,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:31,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828725221] [2020-08-18 17:05:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:31,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:05:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 17:05:33,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828725221] [2020-08-18 17:05:33,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:05:33,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 17:05:33,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234240936] [2020-08-18 17:05:33,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 17:05:33,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:33,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 17:05:33,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 17:05:33,508 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-18 17:05:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:36,544 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-18 17:05:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 17:05:36,545 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 17:05:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:36,549 INFO L225 Difference]: With dead ends: 348 [2020-08-18 17:05:36,549 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 17:05:36,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 17:05:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 17:05:36,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-18 17:05:36,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 17:05:36,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-18 17:05:36,573 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-18 17:05:36,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:36,573 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-18 17:05:36,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 17:05:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-18 17:05:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:05:36,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:36,576 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:36,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 17:05:36,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-18 17:05:36,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:36,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376716478] [2020-08-18 17:05:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:36,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:36,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:05:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:37,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-18 17:05:37,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376716478] [2020-08-18 17:05:37,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:05:37,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 17:05:37,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435588251] [2020-08-18 17:05:37,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 17:05:37,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:37,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 17:05:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-18 17:05:37,667 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-18 17:05:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:39,842 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-18 17:05:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 17:05:39,844 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-18 17:05:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:39,848 INFO L225 Difference]: With dead ends: 360 [2020-08-18 17:05:39,849 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 17:05:39,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-18 17:05:39,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 17:05:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-18 17:05:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 17:05:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-18 17:05:39,878 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-18 17:05:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:39,879 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-18 17:05:39,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 17:05:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-18 17:05:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:05:39,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:39,881 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:39,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 17:05:39,882 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-18 17:05:39,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:39,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563596942] [2020-08-18 17:05:39,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:39,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:05:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:40,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:41,353 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-18 17:05:41,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563596942] [2020-08-18 17:05:41,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:05:41,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 17:05:41,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018382103] [2020-08-18 17:05:41,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 17:05:41,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 17:05:41,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 17:05:41,356 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-18 17:05:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:44,239 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-18 17:05:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 17:05:44,239 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 17:05:44,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:44,242 INFO L225 Difference]: With dead ends: 371 [2020-08-18 17:05:44,242 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 17:05:44,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 17:05:44,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 17:05:44,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-18 17:05:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-18 17:05:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-18 17:05:44,263 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-18 17:05:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:44,264 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-18 17:05:44,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 17:05:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-18 17:05:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 17:05:44,267 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:44,267 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:44,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 17:05:44,267 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:44,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:44,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-18 17:05:44,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:44,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83426716] [2020-08-18 17:05:44,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:05:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 17:05:45,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83426716] [2020-08-18 17:05:45,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 17:05:45,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 17:05:45,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610374359] [2020-08-18 17:05:45,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 17:05:45,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:05:45,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 17:05:45,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-18 17:05:45,421 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-18 17:05:47,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:05:47,508 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-18 17:05:47,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 17:05:47,509 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-18 17:05:47,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:05:47,511 INFO L225 Difference]: With dead ends: 323 [2020-08-18 17:05:47,511 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 17:05:47,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 17:05:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 17:05:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-18 17:05:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 17:05:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-18 17:05:47,532 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-18 17:05:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:05:47,533 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-18 17:05:47,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 17:05:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-18 17:05:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 17:05:47,536 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:05:47,536 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 17:05:47,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 17:05:47,537 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:05:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:05:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-18 17:05:47,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:05:47,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544920971] [2020-08-18 17:05:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:05:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:47,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 17:05:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:49,474 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-18 17:05:50,252 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-18 17:05:50,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 17:05:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:51,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 17:05:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:51,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 17:05:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:52,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 17:05:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 17:05:52,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:05:53,344 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-18 17:05:53,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:05:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:06:22,312 WARN L193 SmtUtils]: Spent 4.31 s on a formula simplification. DAG size of input: 449 DAG size of output: 50