/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=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:43:50,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:43:50,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:43:50,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:43:50,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:43:50,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:43:50,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:43:50,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:43:50,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:43:50,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:43:50,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:43:50,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:43:50,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:43:50,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:43:50,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:43:50,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:43:50,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:43:50,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:43:50,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:43:50,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:43:50,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:43:50,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:43:50,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:43:50,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:43:50,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:43:50,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:43:50,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:43:50,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:43:50,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:43:50,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:43:50,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:43:50,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:43:50,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:43:50,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:43:50,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:43:50,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:43:50,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:43:50,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:43:50,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:43:50,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:43:50,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:43:50,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:43:50,550 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:43:50,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:43:50,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:43:50,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:43:50,555 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:43:50,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:43:50,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:43:50,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:43:50,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:43:50,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:43:50,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:43:50,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:43:50,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:43:50,557 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:43:50,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:43:50,557 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:43:50,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:43:50,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:43:50,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:43:50,558 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:43:50,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:43:50,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:43:50,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:43:50,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:43:50,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:43:50,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:43:50,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:43:50,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:43:50,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:43:50,560 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:43:50,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:43:50,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:43:50,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:43:50,889 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:43:50,890 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:43:50,891 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 22:43:50,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c97a8846/7f96de6b4d52474484c9ba2c832b1df8/FLAG9e95fb156 [2020-08-18 22:43:51,569 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:43:51,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-18 22:43:51,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c97a8846/7f96de6b4d52474484c9ba2c832b1df8/FLAG9e95fb156 [2020-08-18 22:43:51,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6c97a8846/7f96de6b4d52474484c9ba2c832b1df8 [2020-08-18 22:43:51,896 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:43:51,898 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:43:51,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:43:51,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:43:51,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:43:51,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:43:51" (1/1) ... [2020-08-18 22:43:51,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4576fe6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:51, skipping insertion in model container [2020-08-18 22:43:51,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:43:51" (1/1) ... [2020-08-18 22:43:51,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:43:51,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:43:52,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:43:52,433 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:43:52,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:43:52,559 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:43:52,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52 WrapperNode [2020-08-18 22:43:52,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:43:52,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:43:52,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:43:52,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:43:52,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... [2020-08-18 22:43:52,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:43:52,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:43:52,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:43:52,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:43:52,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:43:52,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:43:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:43:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 22:43:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 22:43:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-18 22:43:52,765 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-18 22:43:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-18 22:43:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-18 22:43:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-18 22:43:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-18 22:43:52,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-18 22:43:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-18 22:43:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-18 22:43:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-18 22:43:52,767 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-18 22:43:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-18 22:43:52,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:43:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:43:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 22:43:52,768 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 22:43:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 22:43:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 22:43:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 22:43:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 22:43:52,769 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 22:43:52,770 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 22:43:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 22:43:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 22:43:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 22:43:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 22:43:52,771 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 22:43:52,772 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 22:43:52,773 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 22:43:52,774 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 22:43:52,775 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 22:43:52,776 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 22:43:52,777 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 22:43:52,778 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 22:43:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 22:43:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 22:43:52,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 22:43:52,782 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 22:43:52,783 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 22:43:52,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-18 22:43:52,785 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:43:52,786 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-18 22:43:52,787 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:43:52,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:43:53,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:43:53,658 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-18 22:43:53,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:43:53 BoogieIcfgContainer [2020-08-18 22:43:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:43:53,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:43:53,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:43:53,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:43:53,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:43:51" (1/3) ... [2020-08-18 22:43:53,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c233f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:43:53, skipping insertion in model container [2020-08-18 22:43:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:43:52" (2/3) ... [2020-08-18 22:43:53,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c233f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:43:53, skipping insertion in model container [2020-08-18 22:43:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:43:53" (3/3) ... [2020-08-18 22:43:53,674 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-18 22:43:53,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:43:53,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:43:53,707 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:43:53,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:43:53,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:43:53,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:43:53,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:43:53,734 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:43:53,734 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:43:53,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:43:53,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:43:53,759 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-18 22:43:53,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 22:43:53,769 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:43:53,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:43:53,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:43:53,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:43:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-18 22:43:53,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:43:53,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718311016] [2020-08-18 22:43:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:43:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:43:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:43:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 22:43:54,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718311016] [2020-08-18 22:43:54,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:43:54,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:43:54,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052461669] [2020-08-18 22:43:54,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:43:54,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:43:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:43:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:43:54,409 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-18 22:43:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:43:54,993 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-18 22:43:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 22:43:54,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 22:43:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:43:55,028 INFO L225 Difference]: With dead ends: 343 [2020-08-18 22:43:55,029 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 22:43:55,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:43:55,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 22:43:55,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-18 22:43:55,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 22:43:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-18 22:43:55,126 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-18 22:43:55,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:43:55,127 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-18 22:43:55,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:43:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-18 22:43:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 22:43:55,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:43:55,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:43:55,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:43:55,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:43:55,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:43:55,132 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-18 22:43:55,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:43:55,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651727094] [2020-08-18 22:43:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:43:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:43:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:43:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:55,607 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-18 22:43:55,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651727094] [2020-08-18 22:43:55,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:43:55,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 22:43:55,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217668249] [2020-08-18 22:43:55,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 22:43:55,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:43:55,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 22:43:55,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:43:55,612 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-18 22:43:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:43:56,794 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-18 22:43:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:43:56,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-18 22:43:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:43:56,801 INFO L225 Difference]: With dead ends: 327 [2020-08-18 22:43:56,801 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 22:43:56,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-18 22:43:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 22:43:56,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-18 22:43:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-18 22:43:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-18 22:43:56,829 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-18 22:43:56,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:43:56,829 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-18 22:43:56,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 22:43:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-18 22:43:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:43:56,836 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:43:56,836 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:43:56,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:43:56,837 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:43:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:43:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-18 22:43:56,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:43:56,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089351778] [2020-08-18 22:43:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:43:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:43:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:43:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:43:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 22:43:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:43:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:43:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:43:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:43:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:43:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:43:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-18 22:43:58,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089351778] [2020-08-18 22:43:58,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:43:58,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 22:43:58,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830419888] [2020-08-18 22:43:58,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 22:43:58,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:43:58,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 22:43:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 22:43:58,632 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-18 22:44:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:44:01,829 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-18 22:44:01,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 22:44:01,832 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 22:44:01,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:44:01,835 INFO L225 Difference]: With dead ends: 348 [2020-08-18 22:44:01,835 INFO L226 Difference]: Without dead ends: 189 [2020-08-18 22:44:01,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 22:44:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-18 22:44:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-18 22:44:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-18 22:44:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-18 22:44:01,860 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-18 22:44:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:44:01,861 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-18 22:44:01,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 22:44:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-18 22:44:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:44:01,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:01,864 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:01,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:44:01,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:01,865 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-18 22:44:01,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:01,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147451757] [2020-08-18 22:44:01,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:44:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 22:44:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-18 22:44:03,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147451757] [2020-08-18 22:44:03,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:44:03,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 22:44:03,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939641761] [2020-08-18 22:44:03,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 22:44:03,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:44:03,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 22:44:03,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-18 22:44:03,169 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-18 22:44:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:44:05,375 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-18 22:44:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 22:44:05,376 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-18 22:44:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:44:05,378 INFO L225 Difference]: With dead ends: 360 [2020-08-18 22:44:05,379 INFO L226 Difference]: Without dead ends: 193 [2020-08-18 22:44:05,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-18 22:44:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-18 22:44:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-18 22:44:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-18 22:44:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-18 22:44:05,401 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-18 22:44:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:44:05,402 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-18 22:44:05,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 22:44:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-18 22:44:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:44:05,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:05,405 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:05,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:44:05,406 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:05,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:05,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-18 22:44:05,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:05,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13711095] [2020-08-18 22:44:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:05,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:44:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 22:44:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-18 22:44:07,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13711095] [2020-08-18 22:44:07,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:44:07,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-18 22:44:07,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311682022] [2020-08-18 22:44:07,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-18 22:44:07,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:44:07,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-18 22:44:07,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-18 22:44:07,175 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-18 22:44:09,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:44:09,929 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-18 22:44:09,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-18 22:44:09,930 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-18 22:44:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:44:09,934 INFO L225 Difference]: With dead ends: 371 [2020-08-18 22:44:09,934 INFO L226 Difference]: Without dead ends: 198 [2020-08-18 22:44:09,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-18 22:44:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-18 22:44:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-18 22:44:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-18 22:44:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-18 22:44:09,957 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-18 22:44:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:44:09,958 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-18 22:44:09,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-18 22:44:09,959 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-18 22:44:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 22:44:09,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:09,962 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:09,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:44:09,962 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:09,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-18 22:44:09,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:09,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997632798] [2020-08-18 22:44:09,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:44:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 22:44:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:10,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 22:44:11,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997632798] [2020-08-18 22:44:11,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:44:11,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-18 22:44:11,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631724733] [2020-08-18 22:44:11,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-18 22:44:11,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:44:11,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-18 22:44:11,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-18 22:44:11,216 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-18 22:44:13,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:44:13,433 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-18 22:44:13,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-18 22:44:13,433 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-18 22:44:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:44:13,438 INFO L225 Difference]: With dead ends: 323 [2020-08-18 22:44:13,438 INFO L226 Difference]: Without dead ends: 254 [2020-08-18 22:44:13,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 22:44:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-18 22:44:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-18 22:44:13,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-18 22:44:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-18 22:44:13,459 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-18 22:44:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:44:13,460 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-18 22:44:13,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-18 22:44:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-18 22:44:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 22:44:13,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:13,463 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:13,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:44:13,464 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:13,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:13,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-18 22:44:13,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:13,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094330410] [2020-08-18 22:44:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:13,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:13,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 22:44:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:14,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:14,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:14,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:15,642 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-18 22:44:16,521 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-18 22:44:16,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-18 22:44:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:17,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 22:44:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 22:44:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:18,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:44:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:44:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:19,672 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-18 22:44:19,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat