/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:12:02,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:12:02,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:12:02,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:12:02,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:12:02,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:12:02,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:12:02,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:12:02,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:12:02,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:12:02,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:12:02,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:12:02,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:12:02,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:12:02,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:12:02,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:12:02,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:12:02,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:12:02,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:12:02,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:12:02,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:12:02,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:12:02,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:12:02,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:12:02,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:12:02,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:12:02,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:12:02,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:12:02,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:12:02,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:12:02,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:12:02,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:12:02,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:12:02,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:12:02,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:12:02,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:12:02,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:12:02,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:12:02,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:12:02,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:12:02,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:12:02,753 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 [2020-08-21 22:12:02,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:12:02,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:12:02,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:12:02,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:12:02,799 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:12:02,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:12:02,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:12:02,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:12:02,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:12:02,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:12:02,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:12:02,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:12:02,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:12:02,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:12:02,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:12:02,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:12:02,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:12:02,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:12:02,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:12:02,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:12:02,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:12:02,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:12:02,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:12:02,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:12:02,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:12:02,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:12:02,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:12:02,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:12:02,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:12:02,806 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:12:03,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:12:03,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:12:03,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:12:03,182 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:12:03,182 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:12:03,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-21 22:12:03,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f18c40bc/ab39c696ad5340a9b5484ea6e6b8ff1c/FLAG67d5054fe [2020-08-21 22:12:03,825 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:12:03,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-21 22:12:03,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f18c40bc/ab39c696ad5340a9b5484ea6e6b8ff1c/FLAG67d5054fe [2020-08-21 22:12:04,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5f18c40bc/ab39c696ad5340a9b5484ea6e6b8ff1c [2020-08-21 22:12:04,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:12:04,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:12:04,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:12:04,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:12:04,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:12:04,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358c3c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04, skipping insertion in model container [2020-08-21 22:12:04,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:12:04,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:12:04,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:12:04,713 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:12:04,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:12:04,866 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:12:04,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04 WrapperNode [2020-08-21 22:12:04,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:12:04,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:12:04,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:12:04,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:12:04,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (1/1) ... [2020-08-21 22:12:04,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:12:04,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:12:04,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:12:04,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:12:04,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (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 [2020-08-21 22:12:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:12:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:12:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:12:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 22:12:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 22:12:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 22:12:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 22:12:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 22:12:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 22:12:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 22:12:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 22:12:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 22:12:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 22:12:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 22:12:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 22:12:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 22:12:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 22:12:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 22:12:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 22:12:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 22:12:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 22:12:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 22:12:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 22:12:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 22:12:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 22:12:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 22:12:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 22:12:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 22:12:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 22:12:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 22:12:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 22:12:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 22:12:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 22:12:05,027 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 22:12:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 22:12:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 22:12:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:12:05,028 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 22:12:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 22:12:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:12:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 22:12:05,029 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 22:12:05,030 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 22:12:05,031 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 22:12:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 22:12:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 22:12:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 22:12:05,032 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 22:12:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 22:12:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 22:12:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 22:12:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 22:12:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 22:12:05,039 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 22:12:05,040 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 22:12:05,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 22:12:05,042 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:12:05,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:12:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:12:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:12:05,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:12:05,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:12:05,691 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-21 22:12:05,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:12:05 BoogieIcfgContainer [2020-08-21 22:12:05,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:12:05,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:12:05,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:12:05,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:12:05,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:12:04" (1/3) ... [2020-08-21 22:12:05,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fb37b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:12:05, skipping insertion in model container [2020-08-21 22:12:05,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:12:04" (2/3) ... [2020-08-21 22:12:05,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fb37b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:12:05, skipping insertion in model container [2020-08-21 22:12:05,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:12:05" (3/3) ... [2020-08-21 22:12:05,708 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-21 22:12:05,721 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:12:05,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-21 22:12:05,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-21 22:12:05,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:12:05,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:12:05,781 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:12:05,781 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:12:05,781 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:12:05,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:12:05,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:12:05,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:12:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-21 22:12:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-21 22:12:05,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:05,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:05,815 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:05,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:05,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-08-21 22:12:05,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:05,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846097050] [2020-08-21 22:12:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:06,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846097050] [2020-08-21 22:12:06,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:06,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:12:06,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257845707] [2020-08-21 22:12:06,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:12:06,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:06,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:12:06,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:06,105 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-21 22:12:06,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:06,338 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-08-21 22:12:06,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:12:06,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-21 22:12:06,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:06,352 INFO L225 Difference]: With dead ends: 186 [2020-08-21 22:12:06,353 INFO L226 Difference]: Without dead ends: 99 [2020-08-21 22:12:06,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:06,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-21 22:12:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-08-21 22:12:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-21 22:12:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-21 22:12:06,405 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-08-21 22:12:06,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:06,406 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-21 22:12:06,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:12:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-21 22:12:06,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 22:12:06,407 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:06,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:06,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:12:06,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:06,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-08-21 22:12:06,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:06,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927075297] [2020-08-21 22:12:06,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:06,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927075297] [2020-08-21 22:12:06,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:06,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:12:06,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496664979] [2020-08-21 22:12:06,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:12:06,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:06,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:12:06,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:06,485 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-08-21 22:12:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:06,646 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-08-21 22:12:06,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:12:06,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-21 22:12:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:06,649 INFO L225 Difference]: With dead ends: 84 [2020-08-21 22:12:06,649 INFO L226 Difference]: Without dead ends: 82 [2020-08-21 22:12:06,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-21 22:12:06,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-08-21 22:12:06,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-21 22:12:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-08-21 22:12:06,662 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-08-21 22:12:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:06,662 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-08-21 22:12:06,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:12:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-08-21 22:12:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 22:12:06,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:06,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:06,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:12:06,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:06,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:06,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-08-21 22:12:06,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:06,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596023878] [2020-08-21 22:12:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:06,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596023878] [2020-08-21 22:12:06,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:06,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:12:06,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995353432] [2020-08-21 22:12:06,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:12:06,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:06,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:12:06,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:06,766 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-08-21 22:12:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:07,012 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-08-21 22:12:07,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:12:07,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 22:12:07,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:07,015 INFO L225 Difference]: With dead ends: 138 [2020-08-21 22:12:07,015 INFO L226 Difference]: Without dead ends: 136 [2020-08-21 22:12:07,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:07,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-21 22:12:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-08-21 22:12:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-21 22:12:07,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-08-21 22:12:07,026 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-08-21 22:12:07,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:07,027 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-08-21 22:12:07,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:12:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-08-21 22:12:07,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 22:12:07,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:07,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:07,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:12:07,029 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:07,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:07,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-08-21 22:12:07,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:07,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762482431] [2020-08-21 22:12:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:07,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762482431] [2020-08-21 22:12:07,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:07,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:12:07,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634048823] [2020-08-21 22:12:07,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:12:07,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:07,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:12:07,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:07,106 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-08-21 22:12:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:07,306 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-08-21 22:12:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:12:07,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 22:12:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:07,309 INFO L225 Difference]: With dead ends: 84 [2020-08-21 22:12:07,309 INFO L226 Difference]: Without dead ends: 82 [2020-08-21 22:12:07,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-21 22:12:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-21 22:12:07,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-21 22:12:07,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-08-21 22:12:07,319 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-08-21 22:12:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:07,319 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-08-21 22:12:07,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:12:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-08-21 22:12:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:12:07,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:07,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:07,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:12:07,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:07,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:07,322 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-08-21 22:12:07,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:07,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102386309] [2020-08-21 22:12:07,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:07,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102386309] [2020-08-21 22:12:07,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:07,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:12:07,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959767053] [2020-08-21 22:12:07,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:12:07,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:12:07,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:07,454 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-08-21 22:12:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:07,677 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-08-21 22:12:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:12:07,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-21 22:12:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:07,679 INFO L225 Difference]: With dead ends: 199 [2020-08-21 22:12:07,679 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 22:12:07,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 22:12:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-08-21 22:12:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-21 22:12:07,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-21 22:12:07,698 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-08-21 22:12:07,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:07,698 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-21 22:12:07,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:12:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-21 22:12:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:12:07,700 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:07,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:07,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:12:07,700 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-08-21 22:12:07,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:07,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151334409] [2020-08-21 22:12:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:07,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151334409] [2020-08-21 22:12:07,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:07,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:12:07,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001976900] [2020-08-21 22:12:07,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:12:07,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:07,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:12:07,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:07,800 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-08-21 22:12:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:08,016 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-08-21 22:12:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:12:08,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 22:12:08,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:08,018 INFO L225 Difference]: With dead ends: 126 [2020-08-21 22:12:08,018 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 22:12:08,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:12:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 22:12:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-08-21 22:12:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-21 22:12:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-08-21 22:12:08,026 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-08-21 22:12:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:08,027 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-08-21 22:12:08,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:12:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-08-21 22:12:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:12:08,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:08,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:08,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:12:08,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:08,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-08-21 22:12:08,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:08,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733136086] [2020-08-21 22:12:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:08,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733136086] [2020-08-21 22:12:08,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:08,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:12:08,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101155071] [2020-08-21 22:12:08,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:12:08,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:08,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:12:08,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:08,111 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-08-21 22:12:08,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:08,302 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-21 22:12:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:12:08,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-21 22:12:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:08,304 INFO L225 Difference]: With dead ends: 136 [2020-08-21 22:12:08,304 INFO L226 Difference]: Without dead ends: 116 [2020-08-21 22:12:08,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:12:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-21 22:12:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-08-21 22:12:08,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-21 22:12:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-08-21 22:12:08,311 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-08-21 22:12:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:08,312 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-08-21 22:12:08,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:12:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-08-21 22:12:08,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 22:12:08,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:08,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:08,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:12:08,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:08,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-08-21 22:12:08,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:08,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652520345] [2020-08-21 22:12:08,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:08,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652520345] [2020-08-21 22:12:08,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:08,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:12:08,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497128666] [2020-08-21 22:12:08,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:12:08,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:08,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:12:08,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:08,378 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-08-21 22:12:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:08,515 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-08-21 22:12:08,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:12:08,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-21 22:12:08,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:08,517 INFO L225 Difference]: With dead ends: 141 [2020-08-21 22:12:08,517 INFO L226 Difference]: Without dead ends: 100 [2020-08-21 22:12:08,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-21 22:12:08,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-08-21 22:12:08,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-21 22:12:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-08-21 22:12:08,525 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-08-21 22:12:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:08,526 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-08-21 22:12:08,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:12:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-08-21 22:12:08,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 22:12:08,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:08,527 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:12:08,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:12:08,527 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:08,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-08-21 22:12:08,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:08,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159676321] [2020-08-21 22:12:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:08,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159676321] [2020-08-21 22:12:08,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:08,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:12:08,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25030777] [2020-08-21 22:12:08,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:12:08,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:08,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:12:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:08,592 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-08-21 22:12:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:08,705 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-08-21 22:12:08,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:12:08,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 22:12:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:08,706 INFO L225 Difference]: With dead ends: 79 [2020-08-21 22:12:08,706 INFO L226 Difference]: Without dead ends: 77 [2020-08-21 22:12:08,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-21 22:12:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-21 22:12:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-21 22:12:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-08-21 22:12:08,712 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-08-21 22:12:08,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:08,712 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-08-21 22:12:08,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:12:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-08-21 22:12:08,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 22:12:08,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:08,714 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:12:08,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:12:08,714 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:08,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:08,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-08-21 22:12:08,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:08,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547763841] [2020-08-21 22:12:08,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:08,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547763841] [2020-08-21 22:12:08,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:08,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:12:08,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786316062] [2020-08-21 22:12:08,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:12:08,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:08,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:12:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:08,767 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-08-21 22:12:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:08,890 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-08-21 22:12:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:12:08,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-21 22:12:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:08,892 INFO L225 Difference]: With dead ends: 78 [2020-08-21 22:12:08,892 INFO L226 Difference]: Without dead ends: 76 [2020-08-21 22:12:08,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-21 22:12:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-08-21 22:12:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-21 22:12:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-21 22:12:08,897 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-08-21 22:12:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:08,898 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-21 22:12:08,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:12:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-21 22:12:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:12:08,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:08,899 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:12:08,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:12:08,900 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:08,900 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-08-21 22:12:08,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:08,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147323972] [2020-08-21 22:12:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:09,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147323972] [2020-08-21 22:12:09,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:09,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 22:12:09,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546471173] [2020-08-21 22:12:09,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 22:12:09,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:09,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 22:12:09,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:09,012 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-08-21 22:12:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:09,317 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-08-21 22:12:09,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 22:12:09,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-21 22:12:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:09,318 INFO L225 Difference]: With dead ends: 179 [2020-08-21 22:12:09,319 INFO L226 Difference]: Without dead ends: 137 [2020-08-21 22:12:09,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:12:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-21 22:12:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-08-21 22:12:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-21 22:12:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-21 22:12:09,325 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-08-21 22:12:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:09,326 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-21 22:12:09,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 22:12:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-21 22:12:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-21 22:12:09,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:09,327 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 22:12:09,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:12:09,328 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:09,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:09,328 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-08-21 22:12:09,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:09,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576957500] [2020-08-21 22:12:09,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:12:09,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576957500] [2020-08-21 22:12:09,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:09,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:12:09,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887984387] [2020-08-21 22:12:09,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:12:09,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:12:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:12:09,690 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 9 states. [2020-08-21 22:12:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:10,467 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2020-08-21 22:12:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 22:12:10,468 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-21 22:12:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:10,474 INFO L225 Difference]: With dead ends: 182 [2020-08-21 22:12:10,475 INFO L226 Difference]: Without dead ends: 180 [2020-08-21 22:12:10,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:12:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-21 22:12:10,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 104. [2020-08-21 22:12:10,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-21 22:12:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-08-21 22:12:10,487 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 28 [2020-08-21 22:12:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:10,488 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-08-21 22:12:10,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:12:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-08-21 22:12:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 22:12:10,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:10,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:10,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:12:10,490 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:10,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:10,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-08-21 22:12:10,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:10,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241794573] [2020-08-21 22:12:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:10,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:10,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:12:10,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241794573] [2020-08-21 22:12:10,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:10,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 22:12:10,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68905578] [2020-08-21 22:12:10,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 22:12:10,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:10,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 22:12:10,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:12:10,568 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 5 states. [2020-08-21 22:12:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:10,808 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-08-21 22:12:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 22:12:10,808 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-21 22:12:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:10,810 INFO L225 Difference]: With dead ends: 150 [2020-08-21 22:12:10,810 INFO L226 Difference]: Without dead ends: 132 [2020-08-21 22:12:10,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 22:12:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-21 22:12:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-08-21 22:12:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 22:12:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-08-21 22:12:10,822 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 30 [2020-08-21 22:12:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:10,823 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-08-21 22:12:10,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 22:12:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-08-21 22:12:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 22:12:10,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:10,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:10,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:12:10,830 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:10,830 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-08-21 22:12:10,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:10,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171561334] [2020-08-21 22:12:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:10,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:10,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:12:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:12:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:12:10,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171561334] [2020-08-21 22:12:10,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:12:10,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:12:10,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401983146] [2020-08-21 22:12:10,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:12:10,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:12:10,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:12:10,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:10,897 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 4 states. [2020-08-21 22:12:11,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:12:11,047 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-08-21 22:12:11,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:12:11,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-21 22:12:11,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:12:11,050 INFO L225 Difference]: With dead ends: 124 [2020-08-21 22:12:11,050 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 22:12:11,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:12:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 22:12:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-08-21 22:12:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-21 22:12:11,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-08-21 22:12:11,061 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 30 [2020-08-21 22:12:11,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:12:11,062 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-08-21 22:12:11,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:12:11,062 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-08-21 22:12:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-21 22:12:11,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:12:11,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:12:11,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 22:12:11,064 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:12:11,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:12:11,064 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-08-21 22:12:11,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:12:11,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691840707] [2020-08-21 22:12:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:12:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:12:11,081 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:12:11,082 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:12:11,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 22:12:11,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:12:11 BoogieIcfgContainer [2020-08-21 22:12:11,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:12:11,135 INFO L168 Benchmark]: Toolchain (without parser) took 6989.71 ms. Allocated memory was 140.5 MB in the beginning and 286.8 MB in the end (delta: 146.3 MB). Free memory was 101.2 MB in the beginning and 201.1 MB in the end (delta: -99.9 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2020-08-21 22:12:11,136 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:12:11,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.86 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 167.8 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:12:11,140 INFO L168 Benchmark]: Boogie Preprocessor took 80.96 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:12:11,141 INFO L168 Benchmark]: RCFGBuilder took 748.60 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 108.6 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:12:11,142 INFO L168 Benchmark]: TraceAbstraction took 5430.75 ms. Allocated memory was 201.9 MB in the beginning and 286.8 MB in the end (delta: 84.9 MB). Free memory was 108.0 MB in the beginning and 201.1 MB in the end (delta: -93.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:12:11,147 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 724.86 ms. Allocated memory was 140.5 MB in the beginning and 201.9 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 167.8 MB in the end (delta: -66.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.96 ms. Allocated memory is still 201.9 MB. Free memory was 167.8 MB in the beginning and 164.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 748.60 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 108.6 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5430.75 ms. Allocated memory was 201.9 MB in the beginning and 286.8 MB in the end (delta: 84.9 MB). Free memory was 108.0 MB in the beginning and 201.1 MB in the end (delta: -93.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1075 SDslu, 1380 SDs, 0 SdLazy, 1834 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 367 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 49886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...