/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 [2020-08-19 06:49:14,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:14,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:14,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:14,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:14,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:14,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:14,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:14,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:14,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:14,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:14,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:14,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:14,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:14,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:14,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:14,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:14,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:14,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:14,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:14,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:14,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:14,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:14,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:14,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:49:14,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:49:14,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:49:14,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:49:14,598 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:49:14,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:49:14,601 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:49:14,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:49:14,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:49:14,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:49:14,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:49:14,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:49:14,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:49:14,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:49:14,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:14,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:14,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:14,619 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 [2020-08-19 06:49:14,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:14,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:14,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:14,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:14,667 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:14,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:14,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:14,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:14,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:14,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:14,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:14,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:14,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:14,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:14,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:14,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:14,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:14,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:14,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:14,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:14,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:14,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:14,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:14,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:14,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:14,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:14,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:14,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:14,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:14,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:15,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:15,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:15,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:15,041 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:15,042 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:15,042 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 06:49:15,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4c51c9be/04366f2d3b9045cca0998012cccc2746/FLAG8b045d71c [2020-08-19 06:49:15,565 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:15,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 06:49:15,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4c51c9be/04366f2d3b9045cca0998012cccc2746/FLAG8b045d71c [2020-08-19 06:49:15,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4c51c9be/04366f2d3b9045cca0998012cccc2746 [2020-08-19 06:49:15,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:15,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:15,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:15,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:15,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:15,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:15" (1/1) ... [2020-08-19 06:49:15,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b999e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:15, skipping insertion in model container [2020-08-19 06:49:15,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:15" (1/1) ... [2020-08-19 06:49:15,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:15,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:16,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:16,502 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:16,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:16,666 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:16,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16 WrapperNode [2020-08-19 06:49:16,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:16,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:16,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:16,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:16,682 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (1/1) ... [2020-08-19 06:49:16,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:16,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:16,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:16,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:16,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (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 [2020-08-19 06:49:16,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:16,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 06:49:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 06:49:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 06:49:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 06:49:16,852 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 06:49:16,853 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 06:49:16,853 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 06:49:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 06:49:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 06:49:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 06:49:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 06:49:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 06:49:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 06:49:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 06:49:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 06:49:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 06:49:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 06:49:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 06:49:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 06:49:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 06:49:16,860 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 06:49:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 06:49:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 06:49:16,861 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 06:49:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 06:49:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 06:49:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 06:49:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 06:49:16,862 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 06:49:16,863 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 06:49:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 06:49:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 06:49:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 06:49:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 06:49:16,864 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 06:49:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 06:49:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 06:49:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 06:49:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 06:49:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 06:49:16,867 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 06:49:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 06:49:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 06:49:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 06:49:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 06:49:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 06:49:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 06:49:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 06:49:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 06:49:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 06:49:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 06:49:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 06:49:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 06:49:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 06:49:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 06:49:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 06:49:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 06:49:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 06:49:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 06:49:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 06:49:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 06:49:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 06:49:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 06:49:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 06:49:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 06:49:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 06:49:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 06:49:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 06:49:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 06:49:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 06:49:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 06:49:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:49:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 06:49:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 06:49:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:49:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 06:49:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 06:49:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 06:49:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 06:49:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 06:49:16,897 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 06:49:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 06:49:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 06:49:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:16,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:17,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:17,796 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 06:49:17,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:17 BoogieIcfgContainer [2020-08-19 06:49:17,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:17,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:17,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:17,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:17,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:15" (1/3) ... [2020-08-19 06:49:17,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486977fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:17, skipping insertion in model container [2020-08-19 06:49:17,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:16" (2/3) ... [2020-08-19 06:49:17,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@486977fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:17, skipping insertion in model container [2020-08-19 06:49:17,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:17" (3/3) ... [2020-08-19 06:49:17,817 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 06:49:17,828 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:17,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:17,853 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:17,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:17,885 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:17,885 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:17,885 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:17,885 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:17,886 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:17,886 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:17,886 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:17,913 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 06:49:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 06:49:17,927 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:17,928 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] [2020-08-19 06:49:17,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:17,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:17,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 06:49:17,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:17,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613952098] [2020-08-19 06:49:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 06:49:18,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613952098] [2020-08-19 06:49:18,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:18,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 06:49:18,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283614543] [2020-08-19 06:49:18,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 06:49:18,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:18,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 06:49:18,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 06:49:18,545 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 06:49:19,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:19,025 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 06:49:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 06:49:19,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 06:49:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:19,042 INFO L225 Difference]: With dead ends: 343 [2020-08-19 06:49:19,042 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 06:49:19,049 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 [2020-08-19 06:49:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 06:49:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 06:49:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 06:49:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 06:49:19,123 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 06:49:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:19,124 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 06:49:19,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 06:49:19,124 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 06:49:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 06:49:19,128 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:19,128 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] [2020-08-19 06:49:19,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:19,129 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:19,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:19,129 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 06:49:19,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:19,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890206739] [2020-08-19 06:49:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 06:49:19,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890206739] [2020-08-19 06:49:19,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:19,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 06:49:19,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8450556] [2020-08-19 06:49:19,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:49:19,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:19,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:49:19,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:49:19,656 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 06:49:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:20,877 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 06:49:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 06:49:20,878 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 06:49:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:20,881 INFO L225 Difference]: With dead ends: 327 [2020-08-19 06:49:20,885 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 06:49:20,889 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 [2020-08-19 06:49:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 06:49:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 06:49:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 06:49:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 06:49:20,935 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 06:49:20,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:20,936 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 06:49:20,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:49:20,936 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 06:49:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 06:49:20,951 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:20,951 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] [2020-08-19 06:49:20,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:49:20,951 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 06:49:20,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:20,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065066189] [2020-08-19 06:49:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:21,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:49:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 06:49:22,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065066189] [2020-08-19 06:49:22,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:22,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 06:49:22,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955609755] [2020-08-19 06:49:22,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 06:49:22,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:22,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 06:49:22,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 06:49:22,862 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 06:49:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:26,009 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 06:49:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 06:49:26,009 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 06:49:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:26,012 INFO L225 Difference]: With dead ends: 348 [2020-08-19 06:49:26,013 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 06:49:26,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 06:49:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 06:49:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 06:49:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 06:49:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 06:49:26,037 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 06:49:26,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:26,038 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 06:49:26,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 06:49:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 06:49:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 06:49:26,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:26,040 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] [2020-08-19 06:49:26,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:49:26,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:26,041 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 06:49:26,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:26,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211665814] [2020-08-19 06:49:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:49:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-19 06:49:27,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211665814] [2020-08-19 06:49:27,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:27,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 06:49:27,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942795406] [2020-08-19 06:49:27,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 06:49:27,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:27,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 06:49:27,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 06:49:27,432 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 06:49:29,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:29,687 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 06:49:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 06:49:29,688 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 06:49:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:29,690 INFO L225 Difference]: With dead ends: 360 [2020-08-19 06:49:29,690 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 06:49:29,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 06:49:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 06:49:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 06:49:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 06:49:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 06:49:29,713 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 06:49:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:29,713 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 06:49:29,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 06:49:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 06:49:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 06:49:29,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:29,716 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] [2020-08-19 06:49:29,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:49:29,716 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 06:49:29,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:29,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213176417] [2020-08-19 06:49:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:29,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:49:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-19 06:49:31,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213176417] [2020-08-19 06:49:31,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:31,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 06:49:31,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991443385] [2020-08-19 06:49:31,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 06:49:31,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:31,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 06:49:31,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 06:49:31,226 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 06:49:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:34,200 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 06:49:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 06:49:34,201 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 06:49:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:34,204 INFO L225 Difference]: With dead ends: 371 [2020-08-19 06:49:34,205 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 06:49:34,206 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 [2020-08-19 06:49:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 06:49:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 06:49:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 06:49:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 06:49:34,224 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 06:49:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:34,225 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 06:49:34,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 06:49:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 06:49:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 06:49:34,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:34,228 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] [2020-08-19 06:49:34,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:49:34,228 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:34,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 06:49:34,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:34,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528809992] [2020-08-19 06:49:34,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:49:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-19 06:49:35,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528809992] [2020-08-19 06:49:35,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:49:35,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 06:49:35,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729154844] [2020-08-19 06:49:35,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 06:49:35,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 06:49:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 06:49:35,469 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 06:49:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:37,666 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 06:49:37,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 06:49:37,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 06:49:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:37,672 INFO L225 Difference]: With dead ends: 323 [2020-08-19 06:49:37,672 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 06:49:37,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 06:49:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 06:49:37,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 06:49:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 06:49:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 06:49:37,707 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 06:49:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:37,710 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 06:49:37,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 06:49:37,711 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 06:49:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 06:49:37,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:37,713 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] [2020-08-19 06:49:37,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:49:37,714 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:37,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:37,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 06:49:37,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:37,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901798837] [2020-08-19 06:49:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 06:49:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:38,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:39,737 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 06:49:40,581 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 06:49:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 06:49:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:41,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 06:49:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 06:49:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:42,509 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-08-19 06:49:42,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 06:49:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 06:49:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:43,659 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 06:49:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat