/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 -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 16:17:11,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:17:11,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:17:11,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:17:11,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:17:11,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:17:11,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:17:11,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:17:11,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:17:11,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:17:11,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:17:11,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:17:11,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:17:11,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:17:11,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:17:11,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:17:11,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:17:11,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:17:11,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:17:11,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:17:11,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:17:11,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:17:11,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:17:11,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:17:11,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:17:11,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:17:11,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:17:11,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:17:11,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:17:11,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:17:11,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:17:11,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:17:11,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:17:11,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:17:11,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:17:11,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:17:11,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:17:11,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:17:11,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:17:11,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:17:11,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:17:11,795 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 16:17:11,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:17:11,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:17:11,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:17:11,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:17:11,819 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:17:11,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:17:11,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:17:11,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:17:11,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:17:11,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:17:11,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:17:11,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:17:11,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:17:11,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:17:11,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:17:11,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:17:11,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:17:11,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:17:11,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:17:11,823 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:17:11,823 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:17:11,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:17:11,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:17:11,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:17:11,824 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 [2020-08-18 16:17:12,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:17:12,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:17:12,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:17:12,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:17:12,180 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:17:12,181 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 16:17:12,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d78c4dc/96553d270ee2410ea80341dce7e41b64/FLAG5a815f76f [2020-08-18 16:17:12,722 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:17:12,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 16:17:12,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d78c4dc/96553d270ee2410ea80341dce7e41b64/FLAG5a815f76f [2020-08-18 16:17:13,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d78c4dc/96553d270ee2410ea80341dce7e41b64 [2020-08-18 16:17:13,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:17:13,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:17:13,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:13,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:17:13,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:17:13,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66434035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13, skipping insertion in model container [2020-08-18 16:17:13,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:17:13,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:17:13,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:13,600 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:17:13,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:17:13,766 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:17:13,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13 WrapperNode [2020-08-18 16:17:13,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:17:13,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:17:13,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:17:13,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:17:13,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (1/1) ... [2020-08-18 16:17:13,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:17:13,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:17:13,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:17:13,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:17:13,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (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 16:17:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:17:13,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:17:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 16:17:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 16:17:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 16:17:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-18 16:17:13,939 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-18 16:17:13,940 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-18 16:17:13,941 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-18 16:17:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-18 16:17:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-18 16:17:13,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:17:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:17:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 16:17:13,942 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 16:17:13,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 16:17:13,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 16:17:13,945 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 16:17:13,946 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 16:17:13,947 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 16:17:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 16:17:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 16:17:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 16:17:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 16:17:13,948 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 16:17:13,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 16:17:13,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 16:17:13,951 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 16:17:13,952 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 16:17:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 16:17:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 16:17:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 16:17:13,956 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 16:17:13,957 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 16:17:13,958 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-18 16:17:13,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:17:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-18 16:17:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-18 16:17:13,962 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-18 16:17:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:17:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:17:13,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:17:14,773 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:17:14,773 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-18 16:17:14,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:14 BoogieIcfgContainer [2020-08-18 16:17:14,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:17:14,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:17:14,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:17:14,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:17:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:17:13" (1/3) ... [2020-08-18 16:17:14,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7cbf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:14, skipping insertion in model container [2020-08-18 16:17:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:13" (2/3) ... [2020-08-18 16:17:14,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b7cbf1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:14, skipping insertion in model container [2020-08-18 16:17:14,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:14" (3/3) ... [2020-08-18 16:17:14,787 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-18 16:17:14,797 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:17:14,805 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:17:14,817 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:17:14,843 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:17:14,843 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:17:14,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:17:14,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:17:14,844 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:17:14,844 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:17:14,844 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:17:14,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:17:14,865 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 16:17:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 16:17:14,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:14,876 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 16:17:14,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-18 16:17:14,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:14,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636808427] [2020-08-18 16:17:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:15,400 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 16:17:15,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636808427] [2020-08-18 16:17:15,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:17:15,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:17:15,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107344467] [2020-08-18 16:17:15,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:17:15,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:15,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:17:15,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:17:15,430 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 16:17:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:15,977 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-18 16:17:15,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:17:15,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 16:17:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:15,993 INFO L225 Difference]: With dead ends: 343 [2020-08-18 16:17:15,993 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 16:17:16,000 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 16:17:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 16:17:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-18 16:17:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 16:17:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-18 16:17:16,072 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-18 16:17:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:16,073 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-18 16:17:16,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:17:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-18 16:17:16,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 16:17:16,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:16,077 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 16:17:16,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:17:16,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-18 16:17:16,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:16,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551056979] [2020-08-18 16:17:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:16,544 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 16:17:16,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551056979] [2020-08-18 16:17:16,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:17:16,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 16:17:16,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124820307] [2020-08-18 16:17:16,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 16:17:16,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:16,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 16:17:16,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-18 16:17:16,548 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-18 16:17:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:17,783 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-18 16:17:17,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:17:17,783 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-18 16:17:17,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:17,786 INFO L225 Difference]: With dead ends: 327 [2020-08-18 16:17:17,786 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 16:17:17,792 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 16:17:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 16:17:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-18 16:17:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 16:17:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-18 16:17:17,846 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-18 16:17:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:17,846 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-18 16:17:17,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 16:17:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-18 16:17:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:17:17,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:17,858 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 16:17:17,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:17:17,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:17,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-18 16:17:17,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:17,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660001086] [2020-08-18 16:17:17,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:17:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:19,697 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 16:17:19,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660001086] [2020-08-18 16:17:19,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:17:19,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 16:17:19,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388027475] [2020-08-18 16:17:19,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 16:17:19,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:19,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 16:17:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:17:19,702 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-18 16:17:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:22,819 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-18 16:17:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:17:22,823 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 16:17:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:22,826 INFO L225 Difference]: With dead ends: 348 [2020-08-18 16:17:22,827 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 16:17:22,829 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 16:17:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 16:17:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-18 16:17:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 16:17:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-18 16:17:22,850 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-18 16:17:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:22,851 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-18 16:17:22,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 16:17:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-18 16:17:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:17:22,854 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:22,854 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 16:17:22,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:17:22,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:22,855 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-18 16:17:22,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:22,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325788579] [2020-08-18 16:17:22,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:22,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:17:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:24,031 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 16:17:24,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325788579] [2020-08-18 16:17:24,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:17:24,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:17:24,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379793544] [2020-08-18 16:17:24,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:17:24,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:17:24,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:17:24,035 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-18 16:17:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:26,158 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-18 16:17:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:17:26,161 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-18 16:17:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:26,164 INFO L225 Difference]: With dead ends: 360 [2020-08-18 16:17:26,164 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 16:17:26,166 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 16:17:26,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 16:17:26,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-18 16:17:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 16:17:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-18 16:17:26,187 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-18 16:17:26,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:26,188 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-18 16:17:26,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:17:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-18 16:17:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:17:26,191 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:26,191 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 16:17:26,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:17:26,192 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:26,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-18 16:17:26,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:26,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583713052] [2020-08-18 16:17:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:26,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:17:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:27,698 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 16:17:27,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583713052] [2020-08-18 16:17:27,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:17:27,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 16:17:27,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630995192] [2020-08-18 16:17:27,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 16:17:27,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:27,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 16:17:27,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 16:17:27,701 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-18 16:17:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:30,413 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-18 16:17:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 16:17:30,414 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 16:17:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:30,417 INFO L225 Difference]: With dead ends: 371 [2020-08-18 16:17:30,418 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 16:17:30,420 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 16:17:30,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 16:17:30,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-18 16:17:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-18 16:17:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-18 16:17:30,438 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-18 16:17:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:30,439 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-18 16:17:30,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 16:17:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-18 16:17:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 16:17:30,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:30,442 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 16:17:30,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:17:30,442 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:30,443 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-18 16:17:30,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:30,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80023263] [2020-08-18 16:17:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:30,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:30,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:30,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:17:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:31,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:31,694 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 16:17:31,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80023263] [2020-08-18 16:17:31,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:17:31,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 16:17:31,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377064004] [2020-08-18 16:17:31,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 16:17:31,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:17:31,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 16:17:31,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:17:31,697 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-18 16:17:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:17:34,134 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-18 16:17:34,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 16:17:34,134 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-18 16:17:34,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:17:34,142 INFO L225 Difference]: With dead ends: 323 [2020-08-18 16:17:34,142 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 16:17:34,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 16:17:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 16:17:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-18 16:17:34,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 16:17:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-18 16:17:34,180 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-18 16:17:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:17:34,182 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-18 16:17:34,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 16:17:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-18 16:17:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 16:17:34,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:17:34,197 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 16:17:34,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:17:34,198 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:17:34,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:17:34,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-18 16:17:34,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:17:34,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725661891] [2020-08-18 16:17:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:17:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:34,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 16:17:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:34,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:34,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:35,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:35,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:36,401 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-18 16:17:37,200 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-18 16:17:37,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:37,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 16:17:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:38,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:38,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:38,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 16:17:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:38,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:17:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:39,299 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-08-18 16:17:39,503 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-08-18 16:17:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:17:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:17:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:17:40,611 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-18 16:17:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:17:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat